[PATCH] x86-64 merge

x86_64 core updates.

 - Make it compile again (switch_to macros etc., add dummy suspend.h)
 - reenable strength reduce optimization
 - Fix ramdisk (patch from Mikael Pettersson)
 - Some merges from i386
 - Reimplement lazy iobitmap allocation.  I reimplemented it based
   on bcrl's idea.
 - Fix IPC 32bit emulation to actually work and move into own file
 - New fixed mtrr.c from DaveJ ported from 2.4 and reenable it.
 - Move tlbstate into PDA.
 - Add some changes that got lost during the last merge.
 - new memset that seems to actually work.
 - Align signal handler stack frames to 16 bytes.
 - Some more minor bugfixes.

arch/x86_64/Makefile

@@ -43,15 +43,9 @@ CFLAGS += -mcmodel=kernel
 CFLAGS += -pipe
 # this makes reading assembly source easier
 CFLAGS += -fno-reorder-blocks	
-# needed for later gcc 3.1
 CFLAGS += -finline-limit=2000
-# needed for earlier gcc 3.1
-#CFLAGS += -fno-strength-reduce
 #CFLAGS += -g
 
-# prevent gcc from keeping the stack 16 byte aligned (FIXME)
-#CFLAGS += -mpreferred-stack-boundary=2
-
 HEAD := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o
 
 SUBDIRS := arch/x86_64/tools $(SUBDIRS) arch/x86_64/kernel arch/x86_64/mm arch/x86_64/lib

arch/x86_64/boot/Makefile

@@ -21,10 +21,6 @@ ROOT_DEV := CURRENT
 
 SVGA_MODE := -DSVGA_MODE=NORMAL_VGA
 
-# If you want the RAM disk device, define this to be the size in blocks.
-
-RAMDISK := -DRAMDISK=512
-
 # ---------------------------------------------------------------------------
 
 BOOT_INCL =	$(TOPDIR)/include/linux/config.h \

arch/x86_64/config.in

@@ -47,8 +47,7 @@ define_bool CONFIG_EISA n
 define_bool CONFIG_X86_IO_APIC y
 define_bool CONFIG_X86_LOCAL_APIC y
 
-#currently broken:
-#bool 'MTRR (Memory Type Range Register) support' CONFIG_MTRR
+bool 'MTRR (Memory Type Range Register) support' CONFIG_MTRR
 bool 'Symmetric multi-processing support' CONFIG_SMP
 if [ "$CONFIG_SMP" = "n" ]; then
    bool 'Preemptible Kernel' CONFIG_PREEMPT
@@ -226,6 +225,7 @@ if [ "$CONFIG_DEBUG_KERNEL" != "n" ]; then
    bool '  Spinlock debugging' CONFIG_DEBUG_SPINLOCK
    bool '  Additional run-time checks' CONFIG_CHECKING
    bool '  Debug __init statements' CONFIG_INIT_DEBUG
+   bool '  Spinlock debugging' CONFIG_DEBUG_SPINLOCK
 fi
 endmenu
 

arch/x86_64/ia32/Makefile

@@ -9,8 +9,9 @@ export-objs := ia32_ioctl.o sys_ia32.o
 all: ia32.o
 
 O_TARGET := ia32.o
-obj-$(CONFIG_IA32_EMULATION) := ia32entry.o sys_ia32.o ia32_ioctl.o ia32_signal.o \
-	ia32_binfmt.o fpu32.o socket32.o ptrace32.o
+obj-$(CONFIG_IA32_EMULATION) := ia32entry.o sys_ia32.o ia32_ioctl.o \
+	ia32_signal.o \
+	ia32_binfmt.o fpu32.o socket32.o ptrace32.o ipc32.o
 
 clean::
 

arch/x86_64/ia32/ipc32.c

+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/fs.h> 
+#include <linux/file.h> 
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/mm.h>
+#include <linux/shm.h>
+#include <linux/slab.h>
+#include <linux/ipc.h>
+#include <asm/mman.h>
+#include <asm/types.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#include <asm/ipc.h>
+
+#include <asm/ia32.h>
+
+/*
+ * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation..
+ *
+ * This is really horribly ugly.
+ */
+
+struct msgbuf32 { 
+	s32 mtype; 
+	char mtext[1]; 
+};
+
+struct ipc_perm32 {
+	int key;
+	__kernel_uid_t32 uid;
+	__kernel_gid_t32 gid;
+	__kernel_uid_t32 cuid;
+	__kernel_gid_t32 cgid;
+	unsigned short mode;
+	unsigned short seq;
+};
+
+struct ipc64_perm32 {
+        unsigned key;
+	__kernel_uid32_t32 uid;
+	__kernel_gid32_t32 gid;
+	__kernel_uid32_t32 cuid;
+	__kernel_gid32_t32 cgid;
+	unsigned short mode;
+	unsigned short __pad1;
+	unsigned short seq;
+	unsigned short __pad2;
+	unsigned int unused1;
+	unsigned int unused2;
+};
+
+struct semid_ds32 {
+	struct ipc_perm32 sem_perm;               /* permissions .. see ipc.h */
+	__kernel_time_t32 sem_otime;              /* last semop time */
+	__kernel_time_t32 sem_ctime;              /* last change time */
+	u32 sem_base;              /* ptr to first semaphore in array */
+	u32 sem_pending;          /* pending operations to be processed */
+	u32 sem_pending_last;    /* last pending operation */
+	u32 undo;                  /* undo requests on this array */
+	unsigned short  sem_nsems;              /* no. of semaphores in array */
+};
+
+struct semid64_ds32 {
+	struct ipc64_perm32 sem_perm;
+	__kernel_time_t32 sem_otime;
+	unsigned int __unused1;
+	__kernel_time_t32 sem_ctime;
+	unsigned int __unused2;
+	unsigned int sem_nsems;
+	unsigned int __unused3;
+	unsigned int __unused4;
+};
+
+struct msqid_ds32 {
+	struct ipc_perm32 msg_perm;
+	u32 msg_first;
+	u32 msg_last;
+	__kernel_time_t32 msg_stime;
+	__kernel_time_t32 msg_rtime;
+	__kernel_time_t32 msg_ctime;
+	u32 wwait;
+	u32 rwait;
+	unsigned short msg_cbytes;
+	unsigned short msg_qnum;
+	unsigned short msg_qbytes;
+	__kernel_ipc_pid_t32 msg_lspid;
+	__kernel_ipc_pid_t32 msg_lrpid;
+};
+
+struct msqid64_ds32 {
+	struct ipc64_perm32 msg_perm;
+	__kernel_time_t32 msg_stime;
+	unsigned int __unused1;
+	__kernel_time_t32 msg_rtime;
+	unsigned int __unused2;
+	__kernel_time_t32 msg_ctime;
+	unsigned int __unused3;
+	unsigned int msg_cbytes;
+	unsigned int msg_qnum;
+	unsigned int msg_qbytes;
+	__kernel_pid_t32 msg_lspid;
+	__kernel_pid_t32 msg_lrpid;
+	unsigned int __unused4;
+	unsigned int __unused5;
+};
+
+struct shmid_ds32 {
+	struct ipc_perm32 shm_perm;
+	int shm_segsz;
+	__kernel_time_t32 shm_atime;
+	__kernel_time_t32 shm_dtime;
+	__kernel_time_t32 shm_ctime;
+	__kernel_ipc_pid_t32 shm_cpid;
+	__kernel_ipc_pid_t32 shm_lpid;
+	unsigned short shm_nattch;
+};
+
+struct shmid64_ds32 {
+	struct ipc64_perm32 shm_perm;
+	__kernel_size_t32 shm_segsz;
+	__kernel_time_t32 shm_atime;
+	unsigned int __unused1;
+	__kernel_time_t32 shm_dtime;
+	unsigned int __unused2;
+	__kernel_time_t32 shm_ctime;
+	unsigned int __unused3;
+	__kernel_pid_t32 shm_cpid;
+	__kernel_pid_t32 shm_lpid;
+	unsigned int shm_nattch;
+	unsigned int __unused4;
+	unsigned int __unused5;
+};
+
+struct shminfo64_32 {
+	unsigned int shmmax;
+	unsigned int shmmin;
+	unsigned int shmmni;
+	unsigned int shmseg;
+	unsigned int shmall;
+	unsigned int __unused1;
+	unsigned int __unused2;
+	unsigned int __unused3;
+	unsigned int __unused4;
+};
+
+struct shm_info32 {
+	int used_ids;
+	u32 shm_tot, shm_rss, shm_swp;
+	u32 swap_attempts, swap_successes;
+};
+
+struct ipc_kludge {
+	struct msgbuf *msgp;
+	int msgtyp;
+};
+
+
+#define A(__x)		((unsigned long)(__x))
+#define AA(__x)		((unsigned long)(__x))
+
+#define SEMOP		 1
+#define SEMGET		 2
+#define SEMCTL		 3
+#define MSGSND		11
+#define MSGRCV		12
+#define MSGGET		13
+#define MSGCTL		14
+#define SHMAT		21
+#define SHMDT		22
+#define SHMGET		23
+#define SHMCTL		24
+
+#define IPCOP_MASK(__x)	(1UL << (__x))
+
+static int
+ipc_parse_version32 (int *cmd)
+{
+	if (*cmd & IPC_64) {
+		*cmd ^= IPC_64;
+		return IPC_64;
+	} else {
+		return IPC_OLD;
+	}
+}
+
+static int
+semctl32 (int first, int second, int third, void *uptr)
+{
+	union semun fourth;
+	u32 pad;
+	int err = 0, err2;
+	struct semid64_ds s;
+	mm_segment_t old_fs;
+	int version = ipc_parse_version32(&third);
+
+	if (!uptr)
+		return -EINVAL;
+	if (get_user(pad, (u32 *)uptr))
+		return -EFAULT;
+	if (third == SETVAL)
+		fourth.val = (int)pad;
+	else
+		fourth.__pad = (void *)A(pad);
+	switch (third) {
+	      case IPC_INFO:
+	      case IPC_RMID:
+	      case IPC_SET:
+	      case SEM_INFO:
+	      case GETVAL:
+	      case GETPID:
+	      case GETNCNT:
+	      case GETZCNT:
+	      case GETALL:
+	      case SETVAL:
+	      case SETALL:
+		err = sys_semctl(first, second, third, fourth);
+		break;
+
+	      case IPC_STAT:
+	      case SEM_STAT:
+		fourth.__pad = &s;
+		old_fs = get_fs();
+		set_fs(KERNEL_DS);
+		err = sys_semctl(first, second|IPC_64, third, fourth);
+		set_fs(old_fs);
+
+		if (version == IPC_64) {
+			struct semid64_ds32 *usp64 = (struct semid64_ds32 *) A(pad);
+
+			if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
+				err = -EFAULT;
+				break;
+			}
+			err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
+			err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
+			err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
+			err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
+			err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
+			err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
+			err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
+			err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
+			err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
+			err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
+		} else {
+			struct semid_ds32 *usp32 = (struct semid_ds32 *) A(pad);
+
+			if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
+				err = -EFAULT;
+				break;
+			}
+			err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
+			err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
+			err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
+			err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
+			err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
+			err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
+			err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
+			err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
+			err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
+			err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
+		}
+		if (err2)
+		    err = -EFAULT;
+		break;
+	}
+	return err;
+}
+
+static int
+do_sys32_msgsnd (int first, int second, int third, void *uptr)
+{
+	struct msgbuf *p = kmalloc(second + sizeof(struct msgbuf) + 4, GFP_USER);
+	struct msgbuf32 *up = (struct msgbuf32 *)uptr;
+	mm_segment_t old_fs;
+	int err;
+
+	if (!p)
+		return -ENOMEM;
+	err = get_user(p->mtype, &up->mtype);
+	err |= copy_from_user(p->mtext, &up->mtext, second);
+	if (err)
+		goto out;
+	old_fs = get_fs();
+	set_fs(KERNEL_DS);
+	err = sys_msgsnd(first, p, second, third);
+	set_fs(old_fs);
+  out:
+	kfree(p);
+	return err;
+}
+
+static int
+do_sys32_msgrcv (int first, int second, int msgtyp, int third, int version, void *uptr)
+{
+	struct msgbuf32 *up;
+	struct msgbuf *p;
+	mm_segment_t old_fs;
+	int err;
+
+	if (!version) {
+		struct ipc_kludge *uipck = (struct ipc_kludge *)uptr;
+		struct ipc_kludge ipck;
+
+		err = -EINVAL;
+		if (!uptr)
+			goto out;
+		err = -EFAULT;
+		if (copy_from_user(&ipck, uipck, sizeof(struct ipc_kludge)))
+			goto out;
+		uptr = (void *)A(ipck.msgp);
+		msgtyp = ipck.msgtyp;
+	}
+	err = -ENOMEM;
+	p = kmalloc(second + sizeof(struct msgbuf) + 4, GFP_USER);
+	if (!p)
+		goto out;
+	old_fs = get_fs();
+	set_fs(KERNEL_DS);
+	err = sys_msgrcv(first, p, second + 4, msgtyp, third);
+	set_fs(old_fs);
+	if (err < 0)
+		goto free_then_out;
+	up = (struct msgbuf32 *)uptr;
+	if (put_user(p->mtype, &up->mtype) || copy_to_user(&up->mtext, p->mtext, err))
+		err = -EFAULT;
+free_then_out:
+	kfree(p);
+out:
+	return err;
+}
+
+static int
+msgctl32 (int first, int second, void *uptr)
+{
+	int err = -EINVAL, err2;
+	struct msqid_ds m;
+	struct msqid64_ds m64;
+	struct msqid_ds32 *up32 = (struct msqid_ds32 *)uptr;
+	struct msqid64_ds32 *up64 = (struct msqid64_ds32 *)uptr;
+	mm_segment_t old_fs;
+	int version = ipc_parse_version32(&second);
+
+	switch (second) {
+	      case IPC_INFO:
+	      case IPC_RMID:
+	      case MSG_INFO:
+		err = sys_msgctl(first, second, (struct msqid_ds *)uptr);
+		break;
+
+	      case IPC_SET:
+		if (version == IPC_64) {
+			err = get_user(m.msg_perm.uid, &up64->msg_perm.uid);
+			err |= get_user(m.msg_perm.gid, &up64->msg_perm.gid);
+			err |= get_user(m.msg_perm.mode, &up64->msg_perm.mode);
+			err |= get_user(m.msg_qbytes, &up64->msg_qbytes);
+		} else {
+			err = get_user(m.msg_perm.uid, &up32->msg_perm.uid);
+			err |= get_user(m.msg_perm.gid, &up32->msg_perm.gid);
+			err |= get_user(m.msg_perm.mode, &up32->msg_perm.mode);
+			err |= get_user(m.msg_qbytes, &up32->msg_qbytes);
+		}
+		if (err)
+			break;
+		old_fs = get_fs();
+		set_fs(KERNEL_DS);
+		err = sys_msgctl(first, second, &m);
+		set_fs(old_fs);
+		break;
+
+	      case IPC_STAT:
+	      case MSG_STAT:
+		old_fs = get_fs();
+		set_fs(KERNEL_DS);
+		err = sys_msgctl(first, second|IPC_64, (void *) &m64);
+		set_fs(old_fs);
+
+		if (version == IPC_64) {
+			if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
+				err = -EFAULT;
+				break;
+			}
+			err2 = __put_user(m64.msg_perm.key, &up64->msg_perm.key);
+			err2 |= __put_user(m64.msg_perm.uid, &up64->msg_perm.uid);
+			err2 |= __put_user(m64.msg_perm.gid, &up64->msg_perm.gid);
+			err2 |= __put_user(m64.msg_perm.cuid, &up64->msg_perm.cuid);
+			err2 |= __put_user(m64.msg_perm.cgid, &up64->msg_perm.cgid);
+			err2 |= __put_user(m64.msg_perm.mode, &up64->msg_perm.mode);
+			err2 |= __put_user(m64.msg_perm.seq, &up64->msg_perm.seq);
+			err2 |= __put_user(m64.msg_stime, &up64->msg_stime);
+			err2 |= __put_user(m64.msg_rtime, &up64->msg_rtime);
+			err2 |= __put_user(m64.msg_ctime, &up64->msg_ctime);
+			err2 |= __put_user(m64.msg_cbytes, &up64->msg_cbytes);
+			err2 |= __put_user(m64.msg_qnum, &up64->msg_qnum);
+			err2 |= __put_user(m64.msg_qbytes, &up64->msg_qbytes);
+			err2 |= __put_user(m64.msg_lspid, &up64->msg_lspid);
+			err2 |= __put_user(m64.msg_lrpid, &up64->msg_lrpid);
+			if (err2)
+				err = -EFAULT;
+		} else {
+			if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
+				err = -EFAULT;
+				break;
+			}
+			err2 = __put_user(m64.msg_perm.key, &up32->msg_perm.key);
+			err2 |= __put_user(m64.msg_perm.uid, &up32->msg_perm.uid);
+			err2 |= __put_user(m64.msg_perm.gid, &up32->msg_perm.gid);
+			err2 |= __put_user(m64.msg_perm.cuid, &up32->msg_perm.cuid);
+			err2 |= __put_user(m64.msg_perm.cgid, &up32->msg_perm.cgid);
+			err2 |= __put_user(m64.msg_perm.mode, &up32->msg_perm.mode);
+			err2 |= __put_user(m64.msg_perm.seq, &up32->msg_perm.seq);
+			err2 |= __put_user(m64.msg_stime, &up32->msg_stime);
+			err2 |= __put_user(m64.msg_rtime, &up32->msg_rtime);
+			err2 |= __put_user(m64.msg_ctime, &up32->msg_ctime);
+			err2 |= __put_user(m64.msg_cbytes, &up32->msg_cbytes);
+			err2 |= __put_user(m64.msg_qnum, &up32->msg_qnum);
+			err2 |= __put_user(m64.msg_qbytes, &up32->msg_qbytes);
+			err2 |= __put_user(m64.msg_lspid, &up32->msg_lspid);
+			err2 |= __put_user(m64.msg_lrpid, &up32->msg_lrpid);
+			if (err2)
+				err = -EFAULT;
+		}
+		break;
+	}
+	return err;
+}
+
+static int
+shmat32 (int first, int second, int third, int version, void *uptr)
+{
+	unsigned long raddr;
+	u32 *uaddr = (u32 *)A((u32)third);
+	int err;
+
+	if (version == 1)
+		return -EINVAL;	/* iBCS2 emulator entry point: unsupported */
+	err = sys_shmat(first, uptr, second, &raddr);
+	if (err)
+		return err;
+	return put_user(raddr, uaddr);
+}
+
+static int put_shmid64(struct shmid64_ds *s64p, void *uptr, int version) 
+{ 
+	int err2; 
+#define s64 (*s64p)
+	if (version == IPC_64) {
+		struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
+
+		if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64)))
+			return -EFAULT;
+
+		err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
+		err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
+		err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
+		err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
+		err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
+		err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
+		err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
+		err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
+		err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
+		err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
+		err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
+		err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
+		err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
+		err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
+	} else {
+		struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
+
+		if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) 
+			return -EFAULT;
+
+		err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
+		err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
+		err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
+		err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
+		err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
+		err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
+		err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
+		err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
+		err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
+		err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
+		err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
+		err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
+		err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
+		err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
+	}
+#undef s64
+	return err2 ? -EFAULT : 0;
+}
+static int
+shmctl32 (int first, int second, void *uptr)
+{
+	int err = -EFAULT, err2;
+	struct shmid_ds s;
+	struct shmid64_ds s64;
+	mm_segment_t old_fs;
+	struct shm_info32 *uip = (struct shm_info32 *)uptr;
+	struct shm_info si;
+	int version = ipc_parse_version32(&second);
+	struct shminfo64 smi;
+	struct shminfo *usi32 = (struct shminfo *) uptr;
+	struct shminfo64_32 *usi64 = (struct shminfo64_32 *) uptr;
+
+	switch (second) {
+	      case IPC_INFO:
+		old_fs = get_fs();
+		set_fs(KERNEL_DS);
+		err = sys_shmctl(first, second|IPC_64, (struct shmid_ds *)&smi);
+		set_fs(old_fs);
+
+		if (version == IPC_64) {
+			if (!access_ok(VERIFY_WRITE, usi64, sizeof(*usi64))) {
+				err = -EFAULT;
+				break;
+			}
+			err2 = __put_user(smi.shmmax, &usi64->shmmax);
+			err2 |= __put_user(smi.shmmin, &usi64->shmmin);
+			err2 |= __put_user(smi.shmmni, &usi64->shmmni);
+			err2 |= __put_user(smi.shmseg, &usi64->shmseg);
+			err2 |= __put_user(smi.shmall, &usi64->shmall);
+		} else {
+			if (!access_ok(VERIFY_WRITE, usi32, sizeof(*usi32))) {
+				err = -EFAULT;
+				break;
+			}
+			err2 = __put_user(smi.shmmax, &usi32->shmmax);
+			err2 |= __put_user(smi.shmmin, &usi32->shmmin);
+			err2 |= __put_user(smi.shmmni, &usi32->shmmni);
+			err2 |= __put_user(smi.shmseg, &usi32->shmseg);
+			err2 |= __put_user(smi.shmall, &usi32->shmall);
+		}
+		if (err2)
+			err = -EFAULT;
+		break;
+
+	      case IPC_RMID:
+	      case SHM_LOCK:
+	      case SHM_UNLOCK:
+		err = sys_shmctl(first, second, (struct shmid_ds *)uptr);
+		break;
+
+	      case IPC_SET: 
+		if (version == IPC_64) {
+			struct shmid64_ds32 *up64 = (struct shmid64_ds32 *)uptr;
+			err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
+			err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
+			err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
+		} else {
+			struct shmid_ds32 *up32 = (struct shmid_ds32 *)uptr;
+			err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
+			err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
+			err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
+		}
+		if (err)
+			break;
+		old_fs = get_fs();
+		set_fs(KERNEL_DS);
+		err = sys_shmctl(first, second, &s);
+		set_fs(old_fs);
+		break;
+
+	      case IPC_STAT:
+	      case SHM_STAT:
+		old_fs = get_fs();
+		set_fs(KERNEL_DS);
+		err = sys_shmctl(first, second|IPC_64, (void *) &s64);
+		set_fs(old_fs);
+		
+		if (err < 0)
+			break;
+	        err2 = put_shmid64(&s64, uptr, version); 		
+		if (err2) 
+			err = err2;
+		break;
+
+	      case SHM_INFO:
+		old_fs = get_fs();
+		set_fs(KERNEL_DS);
+		err = sys_shmctl(first, second, (void *)&si);
+		set_fs(old_fs);
+		if (err < 0)
+			break;
+
+		if (!access_ok(VERIFY_WRITE, uip, sizeof(*uip))) {
+			err = -EFAULT;
+			break;
+		}
+		err2 = __put_user(si.used_ids, &uip->used_ids);
+		err2 |= __put_user(si.shm_tot, &uip->shm_tot);
+		err2 |= __put_user(si.shm_rss, &uip->shm_rss);
+		err2 |= __put_user(si.shm_swp, &uip->shm_swp);
+		err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
+		err2 |= __put_user(si.swap_successes, &uip->swap_successes);
+		if (err2)
+			err = -EFAULT;
+		break;
+
+	}
+	return err;
+}
+
+asmlinkage long
+sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
+{
+	int version;
+
+	version = call >> 16; /* hack for backward compatibility */
+	call &= 0xffff;
+
+	switch (call) {
+	      case SEMOP:
+		/* struct sembuf is the same on 32 and 64bit :)) */
+		return sys_semop(first, (struct sembuf *)AA(ptr), second);
+	      case SEMGET:
+		return sys_semget(first, second, third);
+	      case SEMCTL:
+		return semctl32(first, second, third, (void *)AA(ptr));
+
+	      case MSGSND:
+		return do_sys32_msgsnd(first, second, third, (void *)AA(ptr));
+	      case MSGRCV:
+		return do_sys32_msgrcv(first, second, fifth, third, version, (void *)AA(ptr));
+	      case MSGGET:
+		return sys_msgget((key_t) first, second);
+	      case MSGCTL:
+		return msgctl32(first, second, (void *)AA(ptr));
+
+	      case SHMAT:
+		return shmat32(first, second, third, version, (void *)AA(ptr));
+		break;
+	      case SHMDT:
+		return sys_shmdt((char *)AA(ptr));
+	      case SHMGET:
+		return sys_shmget(first, second, third);
+	      case SHMCTL:
+		return shmctl32(first, second, (void *)AA(ptr));
+
+	      default:
+		return -EINVAL;
+	}
+	return -EINVAL;
+}
+

arch/x86_64/ia32/sys_ia32.c

@@ -1118,422 +1118,6 @@ sys32_setrlimit(unsigned int resource, struct rlimit32 *rlim)
 	return ret;
 }
 
-/*
- * sys32_ipc() is the de-multiplexer for the SysV IPC calls in 32bit emulation..
- *
- * This is really horribly ugly.
- */
-
-struct msgbuf32 { s32 mtype; char mtext[1]; };
-
-struct ipc_perm32
-{
-	key_t    	  key;
-        __kernel_uid_t32  uid;
-        __kernel_gid_t32  gid;
-        __kernel_uid_t32  cuid;
-        __kernel_gid_t32  cgid;
-        __kernel_mode_t32 mode;
-        unsigned short  seq;
-};
-
-struct semid_ds32 {
-        struct ipc_perm32 sem_perm;               /* permissions .. see ipc.h */
-        __kernel_time_t32 sem_otime;              /* last semop time */
-        __kernel_time_t32 sem_ctime;              /* last change time */
-        u32 sem_base;              /* ptr to first semaphore in array */
-        u32 sem_pending;          /* pending operations to be processed */
-        u32 sem_pending_last;    /* last pending operation */
-        u32 undo;                  /* undo requests on this array */
-        unsigned short  sem_nsems;              /* no. of semaphores in array */
-};
-
-struct msqid_ds32
-{
-        struct ipc_perm32 msg_perm;
-        u32 msg_first;
-        u32 msg_last;
-        __kernel_time_t32 msg_stime;
-        __kernel_time_t32 msg_rtime;
-        __kernel_time_t32 msg_ctime;
-        u32 wwait;
-        u32 rwait;
-        unsigned short msg_cbytes;
-        unsigned short msg_qnum;  
-        unsigned short msg_qbytes;
-        __kernel_ipc_pid_t32 msg_lspid;
-        __kernel_ipc_pid_t32 msg_lrpid;
-};
-
-struct shmid_ds32 {
-        struct ipc_perm32       shm_perm;
-        int                     shm_segsz;
-        __kernel_time_t32       shm_atime;
-        __kernel_time_t32       shm_dtime;
-        __kernel_time_t32       shm_ctime;
-        __kernel_ipc_pid_t32    shm_cpid; 
-        __kernel_ipc_pid_t32    shm_lpid; 
-        unsigned short          shm_nattch;
-};
-
-#define IPCOP_MASK(__x)	(1UL << (__x))
-
-static int
-do_sys32_semctl(int first, int second, int third, void *uptr)
-{
-	union semun fourth;
-	u32 pad;
-	int err;
-	struct semid64_ds s;
-	struct semid_ds32 *usp;
-	mm_segment_t old_fs;
-
-	if (!uptr)
-		return -EINVAL;
-	err = -EFAULT;
-	if (get_user (pad, (u32 *)uptr))
-		return err;
-	if(third == SETVAL)
-		fourth.val = (int)pad;
-	else
-		fourth.__pad = (void *)A(pad);
-
-	switch (third) {
-
-	case IPC_INFO:
-	case IPC_RMID:
-	case IPC_SET:
-	case SEM_INFO:
-	case GETVAL:
-	case GETPID:
-	case GETNCNT:
-	case GETZCNT:
-	case GETALL:
-	case SETVAL:
-	case SETALL:
-		err = sys_semctl (first, second, third, fourth);
-		break;
-
-	case IPC_STAT:
-	case SEM_STAT:
-		usp = (struct semid_ds32 *)A(pad);
-		fourth.__pad = &s;
-		old_fs = get_fs ();
-		set_fs (KERNEL_DS);
-		err = sys_semctl (first, second, third, fourth);
-		set_fs (old_fs);
-		if (verify_area(VERIFY_WRITE, usp, sizeof(struct semid_ds32)) ||
-		    __put_user(s.sem_perm.key, &usp->sem_perm.key) ||
-		    __put_user(s.sem_perm.uid, &usp->sem_perm.uid) ||
-		    __put_user(s.sem_perm.gid, &usp->sem_perm.gid) ||
-		    __put_user(s.sem_perm.cuid, &usp->sem_perm.cuid) ||
-		    __put_user (s.sem_perm.cgid, &usp->sem_perm.cgid) ||
-		    __put_user (s.sem_perm.mode, &usp->sem_perm.mode) ||
-		    __put_user (s.sem_perm.seq, &usp->sem_perm.seq) ||
-		    __put_user (s.sem_otime, &usp->sem_otime) ||
-		    __put_user (s.sem_ctime, &usp->sem_ctime) ||
-		    __put_user (s.sem_nsems, &usp->sem_nsems))
-			return -EFAULT;
-		break;
-
-	}
-
-	return err;
-}
-
-static int
-do_sys32_msgsnd (int first, int second, int third, void *uptr)
-{
-	struct msgbuf *p = kmalloc (second + sizeof (struct msgbuf)
-				    + 4, GFP_USER);
-	struct msgbuf32 *up = (struct msgbuf32 *)uptr;
-	mm_segment_t old_fs;
-	int err;
-
-	if (!p)
-		return -ENOMEM;
-	err = verify_area(VERIFY_READ, up, sizeof(struct msgbuf32));
-	if (err)
-		goto out;
-	err = __get_user (p->mtype, &up->mtype);
-	err |= __copy_from_user (p->mtext, &up->mtext, second);
-	if (err)
-		goto out;
-	old_fs = get_fs ();
-	set_fs (KERNEL_DS);
-	err = sys_msgsnd (first, p, second, third);
-	set_fs (old_fs);
-out:
-	kfree (p);
-	return err;
-}
-
-static int
-do_sys32_msgrcv (int first, int second, int msgtyp, int third,
-		 int version, void *uptr)
-{
-	struct msgbuf32 *up;
-	struct msgbuf *p;
-	mm_segment_t old_fs;
-	int err;
-
-	if (!version) {
-		struct ipc_kludge *uipck = (struct ipc_kludge *)uptr;
-		struct ipc_kludge ipck;
-
-		err = -EINVAL;
-		if (!uptr)
-			goto out;
-		err = -EFAULT;
-		if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge)))
-			goto out;
-		uptr = (void *)A(ipck.msgp);
-		msgtyp = ipck.msgtyp;
-	}
-	err = -ENOMEM;
-	p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
-	if (!p)
-		goto out;
-	old_fs = get_fs ();
-	set_fs (KERNEL_DS);
-	err = sys_msgrcv (first, p, second + 4, msgtyp, third);
-	set_fs (old_fs);
-	if (err < 0)
-		goto free_then_out;
-	up = (struct msgbuf32 *)uptr;
-	if (verify_area(VERIFY_WRITE, up, sizeof(struct msgbuf32)) ||
-	    __put_user (p->mtype, &up->mtype) ||
-	    __copy_to_user (&up->mtext, p->mtext, err))
-		err = -EFAULT;
-free_then_out:
-	kfree (p);
-out:
-	return err;
-}
-
-static int
-do_sys32_msgctl (int first, int second, void *uptr)
-{
-	int err = -EINVAL;
-	struct msqid_ds m;
-	struct msqid64_ds m64;
-	struct msqid_ds32 *up = (struct msqid_ds32 *)uptr;
-	mm_segment_t old_fs;
-
-	switch (second) {
-
-	case IPC_INFO:
-	case IPC_RMID:
-	case MSG_INFO:
-		err = sys_msgctl (first, second, (struct msqid_ds *)uptr);
-		break;
-
-	case IPC_SET:
-		err = verify_area(VERIFY_READ, up, sizeof(struct msqid_ds32));
-		if (err)
-			break;
-		err = __get_user (m.msg_perm.uid, &up->msg_perm.uid);
-		err |= __get_user (m.msg_perm.gid, &up->msg_perm.gid);
-		err |= __get_user (m.msg_perm.mode, &up->msg_perm.mode);
-		err |= __get_user (m.msg_qbytes, &up->msg_qbytes);
-		if (err)
-			break;
-		old_fs = get_fs ();
-		set_fs (KERNEL_DS);
-		err = sys_msgctl (first, second, &m);
-		set_fs (old_fs);
-		break;
-
-	case IPC_STAT:
-	case MSG_STAT:
-		old_fs = get_fs ();
-		set_fs (KERNEL_DS);
-		err = sys_msgctl (first, second, (void *) &m64);
-		set_fs (old_fs);
-		if (verify_area(VERIFY_WRITE, up, sizeof(struct msqid_ds32)) ||
-		    __put_user (m64.msg_perm.key, &up->msg_perm.key) ||
-		    __put_user(m64.msg_perm.uid, &up->msg_perm.uid) ||
-		    __put_user(m64.msg_perm.gid, &up->msg_perm.gid) ||
-		    __put_user(m64.msg_perm.cuid, &up->msg_perm.cuid) ||
-		    __put_user(m64.msg_perm.cgid, &up->msg_perm.cgid) ||
-		    __put_user(m64.msg_perm.mode, &up->msg_perm.mode) ||
-		    __put_user(m64.msg_perm.seq, &up->msg_perm.seq) ||
-		    __put_user(m64.msg_stime, &up->msg_stime) ||
-		    __put_user(m64.msg_rtime, &up->msg_rtime) ||
-		    __put_user(m64.msg_ctime, &up->msg_ctime) ||
-		    __put_user(m64.msg_cbytes, &up->msg_cbytes) ||
-		    __put_user(m64.msg_qnum, &up->msg_qnum) ||
-		    __put_user(m64.msg_qbytes, &up->msg_qbytes) ||
-		    __put_user(m64.msg_lspid, &up->msg_lspid) ||
-		    __put_user(m64.msg_lrpid, &up->msg_lrpid))
-			return -EFAULT;
-		break;
-
-	}
-
-	return err;
-}
-
-static int
-do_sys32_shmat (int first, int second, int third, int version, void *uptr)
-{
-	unsigned long raddr;
-	u32 *uaddr = (u32 *)A((u32)third);
-	int err = -EINVAL;
-
-	if (version == 1)
-		return err;
-	err = sys_shmat (first, uptr, second, &raddr);
-	if (err)
-		return err;
-	err = put_user (raddr, uaddr);
-	return err;
-}
-
-static int
-do_sys32_shmctl (int first, int second, void *uptr)
-{
-	int err = -EFAULT;
-	struct shmid_ds s;
-	struct shmid64_ds s64;
-	struct shmid_ds32 *up = (struct shmid_ds32 *)uptr;
-	mm_segment_t old_fs;
-	struct shm_info32 {
-		int used_ids;
-		u32 shm_tot, shm_rss, shm_swp;
-		u32 swap_attempts, swap_successes;
-	} *uip = (struct shm_info32 *)uptr;
-	struct shm_info si;
-
-	switch (second) {
-
-	case IPC_INFO:
-	case IPC_RMID:
-	case SHM_LOCK:
-	case SHM_UNLOCK:
-		err = sys_shmctl (first, second, (struct shmid_ds *)uptr);
-		break;
-	case IPC_SET:
-		err = verify_area(VERIFY_READ, up, sizeof(struct shmid_ds32));
-		if (err)
-			break;
-		err = __get_user (s.shm_perm.uid, &up->shm_perm.uid);
-		err |= __get_user (s.shm_perm.gid, &up->shm_perm.gid);
-		err |= __get_user (s.shm_perm.mode, &up->shm_perm.mode);
-		if (err)
-			break;
-		old_fs = get_fs ();
-		set_fs (KERNEL_DS);
-		err = sys_shmctl (first, second, &s);
-		set_fs (old_fs);
-		break;
-
-	case IPC_STAT:
-	case SHM_STAT:
-		old_fs = get_fs ();
-		set_fs (KERNEL_DS);
-		err = sys_shmctl (first, second, (void *) &s64);
-		set_fs (old_fs);
-		if (err < 0)
-			break;
-		if (verify_area(VERIFY_WRITE, up, sizeof(struct shmid_ds32)) ||
-		    __put_user (s64.shm_perm.key, &up->shm_perm.key) ||
-		    __put_user (s64.shm_perm.uid, &up->shm_perm.uid) ||
-		    __put_user (s64.shm_perm.gid, &up->shm_perm.gid) ||
-		    __put_user (s64.shm_perm.cuid, &up->shm_perm.cuid) ||
-		    __put_user (s64.shm_perm.cgid, &up->shm_perm.cgid) ||
-		    __put_user (s64.shm_perm.mode, &up->shm_perm.mode) ||
-		    __put_user (s64.shm_perm.seq, &up->shm_perm.seq) ||
-		    __put_user (s64.shm_atime, &up->shm_atime) ||
-		    __put_user (s64.shm_dtime, &up->shm_dtime) ||
-		    __put_user (s64.shm_ctime, &up->shm_ctime) ||
-		    __put_user (s64.shm_segsz, &up->shm_segsz) ||
-		    __put_user (s64.shm_nattch, &up->shm_nattch) ||
-		    __put_user (s64.shm_cpid, &up->shm_cpid) ||
-		    __put_user (s64.shm_lpid, &up->shm_lpid))
-			return -EFAULT;
-		break;
-
-	case SHM_INFO:
-		old_fs = get_fs ();
-		set_fs (KERNEL_DS);
-		err = sys_shmctl (first, second, (void *)&si);
-		set_fs (old_fs);
-		if (err < 0)
-			break;
-		if (verify_area(VERIFY_WRITE, uip, sizeof(struct shm_info32)) ||
-		    __put_user (si.used_ids, &uip->used_ids) ||
-		    __put_user (si.shm_tot, &uip->shm_tot) ||
-		    __put_user (si.shm_rss, &uip->shm_rss) ||
-		    __put_user (si.shm_swp, &uip->shm_swp) ||
-		    __put_user (si.swap_attempts, &uip->swap_attempts) ||
-		    __put_user (si.swap_successes, &uip->swap_successes))
-			return -EFAULT;
-		break;
-
-	}
-	return err;
-}
-
-asmlinkage long
-sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
-{
-	int version, err;
-
-	version = call >> 16; /* hack for backward compatibility */
-	call &= 0xffff;
-
-	switch (call) {
-
-	case SEMOP:
-		/* struct sembuf is the same on 32 and 64bit :)) */
-		err = sys_semop (first, (struct sembuf *)AA(ptr),
-				 second);
-		break;
-	case SEMGET:
-		err = sys_semget (first, second, third);
-		break;
-	case SEMCTL:
-		err = do_sys32_semctl (first, second, third,
-				       (void *)AA(ptr));
-		break;
-
-	case MSGSND:
-		err = do_sys32_msgsnd (first, second, third,
-				       (void *)AA(ptr));
-		break;
-	case MSGRCV:
-		err = do_sys32_msgrcv (first, second, fifth, third,
-				       version, (void *)AA(ptr));
-		break;
-	case MSGGET:
-		err = sys_msgget ((key_t) first, second);
-		break;
-	case MSGCTL:
-		err = do_sys32_msgctl (first, second, (void *)AA(ptr));
-		break;
-
-	case SHMAT:
-		err = do_sys32_shmat (first, second, third,
-				      version, (void *)AA(ptr));
-		break;
-	case SHMDT: 
-		err = sys_shmdt ((char *)AA(ptr));
-		break;
-	case SHMGET:
-		err = sys_shmget (first, second, third);
-		break;
-	case SHMCTL:
-		err = do_sys32_shmctl (first, second, (void *)AA(ptr));
-		break;
-	default:
-		err = -EINVAL;
-		break;
-	}
-
-	return err;
-}
-
 /*
  * sys_time() can be implemented in user-level using
  * sys_gettimeofday().  IA64 did this but i386 Linux did not

arch/x86_64/kernel/ioport.c

@@ -14,6 +14,7 @@
 #include <linux/smp.h>
 #include <linux/smp_lock.h>
 #include <linux/stddef.h>
+#include <linux/slab.h>
 
 /* Set EXTENT bits starting at BASE in BITMAP to value TURN_ON. */
 static void set_bitmap(unsigned long *bitmap, short base, short extent, int new_value)
@@ -61,27 +62,19 @@ asmlinkage int sys_ioperm(unsigned long from, unsigned long num, int turn_on)
 		return -EINVAL;
 	if (turn_on && !capable(CAP_SYS_RAWIO))
 		return -EPERM;
-	/*
-	 * If it's the first ioperm() call in this thread's lifetime, set the
-	 * IO bitmap up. ioperm() is much less timing critical than clone(),
-	 * this is why we delay this operation until now:
-	 */
- 	if (!t->ioperm) {
-		/*
-		 * just in case ...
-		 */
-		memset(t->io_bitmap,0xff,(IO_BITMAP_SIZE+1)*4);
-		t->ioperm = 1;
-		/*
-		 * this activates it in the TSS
-		 */
+
+	if (!t->io_bitmap_ptr) { 
+		t->io_bitmap_ptr = kmalloc((IO_BITMAP_SIZE+1)*4, GFP_KERNEL);
+		if (!t->io_bitmap_ptr) 
+			return -ENOMEM; 
+		memset(t->io_bitmap_ptr,0xff,(IO_BITMAP_SIZE+1)*4);
 		tss->io_map_base = IO_BITMAP_OFFSET;
 	}
 
 	/*
 	 * do it in the per-thread copy and in the TSS ...
 	 */
-	set_bitmap((unsigned long *) t->io_bitmap, from, num, !turn_on);
+	set_bitmap((unsigned long *) t->io_bitmap_ptr, from, num, !turn_on);
 	set_bitmap((unsigned long *) tss->io_bitmap, from, num, !turn_on);
 
 	return 0;

arch/x86_64/kernel/mtrr.c

@@ -19,10 +19,14 @@
     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 	(For earlier history, see arch/i386/kernel/mtrr.c)
-	September 2001	Dave Jones <davej@suse.de>
+	v2.00	September 2001	Dave Jones <davej@suse.de>
 		Initial rewrite for x86-64.
-
+	  Removal of non-Intel style MTRR code.
+	v2.01  June 2002  Dave Jones <davej@suse.de>
+	  Removal of redundant abstraction layer.
+	  64-bit fixes.
 */
+
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
@@ -60,35 +64,19 @@
 #include <asm/hardirq.h>
 #include <linux/irq.h>
 
-#define MTRR_VERSION            "2.00 (20020207)"
+#define MTRR_VERSION "2.01 (20020605)"
 
 #define TRUE  1
 #define FALSE 0
 
-#define MTRRcap_MSR     0x0fe
-#define MTRRdefType_MSR 0x2ff
-
-#define MTRRphysBase_MSR(reg) (0x200 + 2 * (reg))
-#define MTRRphysMask_MSR(reg) (0x200 + 2 * (reg) + 1)
+#define MSR_MTRRphysBase(reg) (0x200 + 2 * (reg))
+#define MSR_MTRRphysMask(reg) (0x200 + 2 * (reg) + 1)
 
 #define NUM_FIXED_RANGES 88
-#define MTRRfix64K_00000_MSR 0x250
-#define MTRRfix16K_80000_MSR 0x258
-#define MTRRfix16K_A0000_MSR 0x259
-#define MTRRfix4K_C0000_MSR 0x268
-#define MTRRfix4K_C8000_MSR 0x269
-#define MTRRfix4K_D0000_MSR 0x26a
-#define MTRRfix4K_D8000_MSR 0x26b
-#define MTRRfix4K_E0000_MSR 0x26c
-#define MTRRfix4K_E8000_MSR 0x26d
-#define MTRRfix4K_F0000_MSR 0x26e
-#define MTRRfix4K_F8000_MSR 0x26f
 
-#ifdef CONFIG_SMP
 #define MTRR_CHANGE_MASK_FIXED     0x01
 #define MTRR_CHANGE_MASK_VARIABLE  0x02
 #define MTRR_CHANGE_MASK_DEFTYPE   0x04
-#endif
 
 typedef u8 mtrr_type;
 
@@ -97,49 +85,43 @@ typedef u8 mtrr_type;
 #ifdef CONFIG_SMP
 #define set_mtrr(reg,base,size,type) set_mtrr_smp (reg, base, size, type)
 #else
-#define set_mtrr(reg,base,size,type) (*set_mtrr_up) (reg, base, size, type, \
-						       TRUE)
+#define set_mtrr(reg,base,size,type) set_mtrr_up (reg, base, size, type, TRUE)
 #endif
 
 #if defined(CONFIG_PROC_FS) || defined(CONFIG_DEVFS_FS)
 #define USERSPACE_INTERFACE
 #endif
 
-#ifndef USERSPACE_INTERFACE
-#define compute_ascii() while (0)
-#endif
-
 #ifdef USERSPACE_INTERFACE
 static char *ascii_buffer;
 static unsigned int ascii_buf_bytes;
-#endif
-static unsigned int *usage_table;
-static DECLARE_MUTEX (main_lock);
-
-/*  Private functions  */
-#ifdef USERSPACE_INTERFACE
 static void compute_ascii (void);
+#else
+#define compute_ascii() while (0)
 #endif
 
+static unsigned int *usage_table;
+static DECLARE_MUTEX (mtrr_lock);
+
 struct set_mtrr_context {
-    unsigned long flags;
-    unsigned long deftype_lo;
-    unsigned long deftype_hi;
-    unsigned long cr4val;
+	u32 deftype_lo;
+	u32 deftype_hi;
+	u64 flags;
+	u64 cr4val;
 };
 
 
 /*  Put the processor into a state where MTRRs can be safely set  */
 static void set_mtrr_prepare (struct set_mtrr_context *ctxt)
 {
-	unsigned long cr0;
+	u64 cr0;
 
 	/* Disable interrupts locally */
 	__save_flags(ctxt->flags);
 	__cli();
 
     /*  Save value of CR4 and clear Page Global Enable (bit 7)  */
-	if (cpu_has_ge) {
+	if (cpu_has_pge) { 
 	 ctxt->cr4val = read_cr4();
 		write_cr4(ctxt->cr4val & ~(1UL << 7));
     }
@@ -152,8 +134,8 @@ static void set_mtrr_prepare (struct set_mtrr_context *ctxt)
            wbinvd();
 
 	/*  Disable MTRRs, and set the default type to uncached  */
-	rdmsr(MTRRdefType_MSR, ctxt->deftype_lo, ctxt->deftype_hi);
-	wrmsr(MTRRdefType_MSR, ctxt->deftype_lo & 0xf300UL, ctxt->deftype_hi);
+	rdmsr(MSR_MTRRdefType, ctxt->deftype_lo, ctxt->deftype_hi);
+	wrmsr(MSR_MTRRdefType, ctxt->deftype_lo & 0xf300UL, ctxt->deftype_hi);
 }
 
 
@@ -164,7 +146,7 @@ static void set_mtrr_done (struct set_mtrr_context *ctxt)
     wbinvd();
 
     /*  Restore MTRRdefType  */
-	wrmsr(MTRRdefType_MSR, ctxt->deftype_lo, ctxt->deftype_hi);
+	wrmsr(MSR_MTRRdefType, ctxt->deftype_lo, ctxt->deftype_hi);
 
     /*  Enable caches  */
 	write_cr0(read_cr0() & 0xbfffffff);
@@ -181,9 +163,9 @@ static void set_mtrr_done (struct set_mtrr_context *ctxt)
 /*  This function returns the number of variable MTRRs  */
 static unsigned int get_num_var_ranges (void)
 {
-    unsigned long config, dummy;
+	u32 config, dummy;
 
-	rdmsr (MTRRcap_MSR, config, dummy);
+	rdmsr (MSR_MTRRcap, config, dummy);
 	return (config & 0xff);
 }
 
@@ -191,21 +173,21 @@ static unsigned int get_num_var_ranges (void)
 /*  Returns non-zero if we have the write-combining memory type  */
 static int have_wrcomb (void)
 {
-    unsigned long config, dummy;
+	u32 config, dummy;
 
-	rdmsr (MTRRcap_MSR, config, dummy);
+	rdmsr (MSR_MTRRcap, config, dummy);
 	return (config & (1 << 10));
 }
 
 
-static u32 size_or_mask, size_and_mask;
+static u64 size_or_mask, size_and_mask;
 
-static void get_mtrr (unsigned int reg, unsigned long *base,
-		unsigned long *size, mtrr_type * type)
+static void get_mtrr (unsigned int reg, u64 *base, u32 *size, mtrr_type * type)
 {
-    unsigned long mask_lo, mask_hi, base_lo, base_hi;
+	u32 mask_lo, mask_hi, base_lo, base_hi;
+	u64 newsize;
 
-	rdmsr (MTRRphysMask_MSR (reg), mask_lo, mask_hi);
+	rdmsr (MSR_MTRRphysMask(reg), mask_lo, mask_hi);
 	if ((mask_lo & 0x800) == 0) {
 	/*  Invalid (i.e. free) range  */
 	*base = 0;
@@ -214,32 +196,29 @@ static void get_mtrr (unsigned int reg, unsigned long *base,
 	return;
     }
 
-	rdmsr (MTRRphysBase_MSR (reg), base_lo, base_hi);
+	rdmsr (MSR_MTRRphysBase(reg), base_lo, base_hi);
 
     /* Work out the shifted address mask. */
-    mask_lo = size_or_mask | mask_hi << (32 - PAGE_SHIFT)
-		| mask_lo >> PAGE_SHIFT;
-
-    /* This works correctly if size is a power of two, i.e. a
-       contiguous range. */
-     *size = -mask_lo;
+	newsize = (u64) mask_hi << 32 | (mask_lo & ~0x800);
+	newsize = ~newsize+1;
+	*size = (u32) newsize >> PAGE_SHIFT;
      *base = base_hi << (32 - PAGE_SHIFT) | base_lo >> PAGE_SHIFT;
      *type = base_lo & 0xff;
 }
 
 
 
-static void set_mtrr_up (unsigned int reg, unsigned long base,
-			       unsigned long size, mtrr_type type, int do_safe)
-/*  [SUMMARY] Set variable MTRR register on the local CPU.
-    <reg> The register to set.
-    <base> The base address of the region.
-    <size> The size of the region. If this is 0 the region is disabled.
-    <type> The type of the region.
-    <do_safe> If TRUE, do the change safely. If FALSE, safety measures should
-    be done externally.
-    [RETURNS] Nothing.
-*/
+/*
+ * Set variable MTRR register on the local CPU.
+ *  <reg> The register to set.
+ *  <base> The base address of the region.
+ *  <size> The size of the region. If this is 0 the region is disabled.
+ *  <type> The type of the region.
+ *  <do_safe> If TRUE, do the change safely. If FALSE, safety measures should
+ *  be done externally.
+ */
+static void set_mtrr_up (unsigned int reg, u64 base,
+		   u32 size, mtrr_type type, int do_safe)
 {
     struct set_mtrr_context ctxt;
 
@@ -249,12 +228,12 @@ static void set_mtrr_up (unsigned int reg, unsigned long base,
 	if (size == 0) {
 	/* The invalid bit is kept in the mask, so we simply clear the
 	   relevant mask register to disable a range. */
-	wrmsr (MTRRphysMask_MSR (reg), 0, 0);
+		wrmsr (MSR_MTRRphysMask(reg), 0, 0);
 	} else {
-	wrmsr (MTRRphysBase_MSR (reg), base << PAGE_SHIFT | type,
+		wrmsr (MSR_MTRRphysBase(reg), base << PAGE_SHIFT | type,
 		(base & size_and_mask) >> (32 - PAGE_SHIFT));
-	wrmsr (MTRRphysMask_MSR (reg), -size << PAGE_SHIFT | 0x800,
-		(-size & size_and_mask) >> (32 - PAGE_SHIFT));
+		wrmsr (MSR_MTRRphysMask(reg), (-size-1) << PAGE_SHIFT | 0x800,
+		       ((-size-1) & size_and_mask) >> (32 - PAGE_SHIFT));
     }
 	if (do_safe)
 		set_mtrr_done (&ctxt);
@@ -264,41 +243,40 @@ static void set_mtrr_up (unsigned int reg, unsigned long base,
 #ifdef CONFIG_SMP
 
 struct mtrr_var_range {
-    unsigned long base_lo;
-    unsigned long base_hi;
-    unsigned long mask_lo;
-    unsigned long mask_hi;
+	u32 base_lo;
+	u32 base_hi;
+	u32 mask_lo;
+	u32 mask_hi;
 };
 
 /*  Get the MSR pair relating to a var range  */
 static void __init get_mtrr_var_range (unsigned int index,
 					   struct mtrr_var_range *vr)
 {
-    rdmsr (MTRRphysBase_MSR (index), vr->base_lo, vr->base_hi);
-    rdmsr (MTRRphysMask_MSR (index), vr->mask_lo, vr->mask_hi);
+	rdmsr (MSR_MTRRphysBase(index), vr->base_lo, vr->base_hi);
+	rdmsr (MSR_MTRRphysMask(index), vr->mask_lo, vr->mask_hi);
 }
 
 
 /*  Set the MSR pair relating to a var range. Returns TRUE if
     changes are made  */
-static int __init
-set_mtrr_var_range_testing (unsigned int index, struct mtrr_var_range *vr)
+static int __init set_mtrr_var_range_testing (unsigned int index,
+		struct mtrr_var_range *vr)
 {
-    unsigned int lo, hi;
+	u32 lo, hi;
     int changed = FALSE;
 
-	rdmsr (MTRRphysBase_MSR (index), lo, hi);
-	if ((vr->base_lo & 0xfffff0ffUL) != (lo & 0xfffff0ffUL)
-	    || (vr->base_hi & 0xfUL) != (hi & 0xfUL)) {
-		wrmsr (MTRRphysBase_MSR (index), vr->base_lo, vr->base_hi);
+	rdmsr (MSR_MTRRphysBase(index), lo, hi);
+	if ((vr->base_lo & 0xfffff0ff) != (lo & 0xfffff0ff)
+	    || (vr->base_hi & 0x000fffff) != (hi & 0x000fffff)) {
+		wrmsr (MSR_MTRRphysBase(index), vr->base_lo, vr->base_hi);
 	changed = TRUE;
     }
 
-	rdmsr (MTRRphysMask_MSR (index), lo, hi);
-
-	if ((vr->mask_lo & 0xfffff800UL) != (lo & 0xfffff800UL)
-	    || (vr->mask_hi & 0xfUL) != (hi & 0xfUL)) {
-		wrmsr (MTRRphysMask_MSR (index), vr->mask_lo, vr->mask_hi);
+	rdmsr (MSR_MTRRphysMask(index), lo, hi);
+	if ((vr->mask_lo & 0xfffff800) != (lo & 0xfffff800)
+	    || (vr->mask_hi & 0x000fffff) != (hi & 0x000fffff)) {
+		wrmsr (MSR_MTRRphysMask(index), vr->mask_lo, vr->mask_hi);
 	changed = TRUE;
     }
     return changed;
@@ -307,45 +285,50 @@ set_mtrr_var_range_testing (unsigned int index, struct mtrr_var_range *vr)
 
 static void __init get_fixed_ranges (mtrr_type * frs)
 {
-	unsigned long *p = (unsigned long *) frs;
+	u32 *p = (u32 *) frs;
     int i;
 
-	rdmsr (MTRRfix64K_00000_MSR, p[0], p[1]);
+	rdmsr (MSR_MTRRfix64K_00000, p[0], p[1]);
 
     for (i = 0; i < 2; i++)
-		rdmsr (MTRRfix16K_80000_MSR + i, p[2 + i * 2], p[3 + i * 2]);
+		rdmsr (MSR_MTRRfix16K_80000 + i, p[2 + i * 2], p[3 + i * 2]);
     for (i = 0; i < 8; i++)
-		rdmsr (MTRRfix4K_C0000_MSR + i, p[6 + i * 2], p[7 + i * 2]);
+		rdmsr (MSR_MTRRfix4K_C0000 + i, p[6 + i * 2], p[7 + i * 2]);
 }
 
 
 static int __init set_fixed_ranges_testing (mtrr_type * frs)
 {
-	unsigned long *p = (unsigned long *) frs;
+	u32 *p = (u32 *) frs;
     int changed = FALSE;
     int i;
-    unsigned long lo, hi;
+	u32 lo, hi;
 
-	rdmsr (MTRRfix64K_00000_MSR, lo, hi);
+	printk (KERN_INFO "mtrr: rdmsr 64K_00000\n");
+	rdmsr (MSR_MTRRfix64K_00000, lo, hi);
 	if (p[0] != lo || p[1] != hi) {
-	wrmsr (MTRRfix64K_00000_MSR, p[0], p[1]);
+		printk (KERN_INFO "mtrr: Writing %x:%x to 64K MSR. lohi were %x:%x\n", p[0], p[1], lo, hi);
+		wrmsr (MSR_MTRRfix64K_00000, p[0], p[1]);
 	changed = TRUE;
     }
 
+	printk (KERN_INFO "mtrr: rdmsr 16K_80000\n");
 	for (i = 0; i < 2; i++) {
-	rdmsr (MTRRfix16K_80000_MSR + i, lo, hi);
+		rdmsr (MSR_MTRRfix16K_80000 + i, lo, hi);
 		if (p[2 + i * 2] != lo || p[3 + i * 2] != hi) {
-			wrmsr (MTRRfix16K_80000_MSR + i, p[2 + i * 2],
-			       p[3 + i * 2]);
+			printk (KERN_INFO "mtrr: Writing %x:%x to 16K MSR%d. lohi were %x:%x\n", p[2 + i * 2], p[3 + i * 2], i, lo, hi );
+			wrmsr (MSR_MTRRfix16K_80000 + i, p[2 + i * 2], p[3 + i * 2]);
 	    changed = TRUE;
 	}
     }
 
+	printk (KERN_INFO "mtrr: rdmsr 4K_C0000\n");
 	for (i = 0; i < 8; i++) {
-	rdmsr (MTRRfix4K_C0000_MSR + i, lo, hi);
+		rdmsr (MSR_MTRRfix4K_C0000 + i, lo, hi);
+		printk (KERN_INFO "mtrr: MTRRfix4K_C0000+%d = %x:%x\n", i, lo, hi);
 		if (p[6 + i * 2] != lo || p[7 + i * 2] != hi) {
-			wrmsr (MTRRfix4K_C0000_MSR + i, p[6 + i * 2],
-			       p[7 + i * 2]);
+			printk (KERN_INFO "mtrr: Writing %x:%x to 4K MSR%d. lohi were %x:%x\n", p[6 + i * 2], p[7 + i * 2], i, lo, hi);
+			wrmsr (MSR_MTRRfix4K_C0000 + i, p[6 + i * 2], p[7 + i * 2]);
 	    changed = TRUE;
 	}
     }
@@ -357,8 +340,8 @@ struct mtrr_state {
     unsigned int num_var_ranges;
     struct mtrr_var_range *var_ranges;
     mtrr_type fixed_ranges[NUM_FIXED_RANGES];
-    unsigned char enabled;
     mtrr_type def_type;
+	unsigned char enabled;
 };
 
 
@@ -367,9 +350,9 @@ static void __init get_mtrr_state (struct mtrr_state *state)
 {
     unsigned int nvrs, i;
     struct mtrr_var_range *vrs;
-    unsigned long lo, dummy;
+	u32 lo, dummy;
 
-	nvrs = state->num_var_ranges = get_num_var_ranges ();
+	nvrs = state->num_var_ranges = get_num_var_ranges();
     vrs = state->var_ranges
               = kmalloc (nvrs * sizeof (struct mtrr_var_range), GFP_KERNEL);
     if (vrs == NULL)
@@ -379,7 +362,7 @@ static void __init get_mtrr_state (struct mtrr_state *state)
 	get_mtrr_var_range (i, &vrs[i]);
     get_fixed_ranges (state->fixed_ranges);
 
-    rdmsr (MTRRdefType_MSR, lo, dummy);
+	rdmsr (MSR_MTRRdefType, lo, dummy);
     state->def_type = (lo & 0xff);
     state->enabled = (lo & 0xc00) >> 10;
 }
@@ -393,17 +376,18 @@ static void __init finalize_mtrr_state (struct mtrr_state *state)
 }
 
 
-static unsigned long __init set_mtrr_state (struct mtrr_state *state,
+/*
+ * Set the MTRR state for this CPU.
+ *  <state> The MTRR state information to read.
+ *  <ctxt> Some relevant CPU context.
+ *  [NOTE] The CPU must already be in a safe state for MTRR changes.
+ *  [RETURNS] 0 if no changes made, else a mask indication what was changed.
+ */
+static u64 __init set_mtrr_state (struct mtrr_state *state,
 						struct set_mtrr_context *ctxt)
-/*  [SUMMARY] Set the MTRR state for this CPU.
-    <state> The MTRR state information to read.
-    <ctxt> Some relevant CPU context.
-    [NOTE] The CPU must already be in a safe state for MTRR changes.
-    [RETURNS] 0 if no changes made, else a mask indication what was changed.
-*/
 {
     unsigned int i;
-    unsigned long change_mask = 0;
+	u64 change_mask = 0;
 
     for (i = 0; i < state->num_var_ranges; i++)
 		if (set_mtrr_var_range_testing (i, &state->var_ranges[i]))
@@ -428,16 +412,16 @@ static volatile int wait_barrier_execute = FALSE;
 static volatile int wait_barrier_cache_enable = FALSE;
 
 struct set_mtrr_data {
-    unsigned long smp_base;
-    unsigned long smp_size;
+	u64 smp_base;
+	u32 smp_size;
     unsigned int smp_reg;
     mtrr_type smp_type;
 };
 
+/*
+ * Synchronisation handler. Executed by "other" CPUs.
+ */
 static void ipi_handler (void *info)
-/*  [SUMMARY] Synchronisation handler. Executed by "other" CPUs.
-    [RETURNS] Nothing.
-*/
 {
     struct set_mtrr_data *data = info;
     struct set_mtrr_context ctxt;
@@ -449,7 +433,7 @@ static void ipi_handler (void *info)
 		barrier ();
 
     /*  The master has cleared me to execute  */
-    (*set_mtrr_up) (data->smp_reg, data->smp_base, data->smp_size,
+	set_mtrr_up (data->smp_reg, data->smp_base, data->smp_size,
 		    data->smp_type, FALSE);
 
     /*  Notify master CPU that I've executed the function  */
@@ -462,8 +446,7 @@ static void ipi_handler (void *info)
 }
 
 
-static void set_mtrr_smp (unsigned int reg, unsigned long base,
-			  unsigned long size, mtrr_type type)
+static void set_mtrr_smp (unsigned int reg, u64 base, u32 size, mtrr_type type)
 {
     struct set_mtrr_data data;
     struct set_mtrr_context ctxt;
@@ -490,7 +473,7 @@ static void set_mtrr_smp (unsigned int reg, unsigned long base,
 	/* Set up for completion wait and then release other CPUs to change MTRRs */
     atomic_set (&undone_count, smp_num_cpus - 1);
     wait_barrier_execute = FALSE;
-    (*set_mtrr_up) (reg, base, size, type, FALSE);
+	set_mtrr_up (reg, base, size, type, FALSE);
 
     /*  Now wait for other CPUs to complete the function  */
 	while (atomic_read (&undone_count) > 0)
@@ -505,7 +488,7 @@ static void set_mtrr_smp (unsigned int reg, unsigned long base,
 
 
 /*  Some BIOS's are fucked and don't set all MTRRs the same!  */
-static void __init mtrr_state_warn (unsigned long mask)
+static void __init mtrr_state_warn (u32 mask)
 {
 	if (!mask)
 		return;
@@ -521,7 +504,7 @@ static void __init mtrr_state_warn (unsigned long mask)
 #endif  /*  CONFIG_SMP  */
 
 
-static char inline * attrib_to_str (int x)
+static inline char * attrib_to_str (int x)
 {
     return (x <= 6) ? mtrr_strings[x] : "?";
 }
@@ -551,21 +534,20 @@ static void __init init_table (void)
 }
 
 
-static int generic_get_free_region (unsigned long base,
-		unsigned long size)
-/*  [SUMMARY] Get a free MTRR.
-    <base> The starting (base) address of the region.
-    <size> The size (in bytes) of the region.
-    [RETURNS] The index of the region on success, else -1 on error.
+/*
+ * Get a free MTRR.
+ * returns the index of the region on success, else -1 on error.
 */
+static int get_free_region(void)
 {
     int i, max;
     mtrr_type ltype;
-    unsigned long lbase, lsize;
+	u64 lbase;
+	u32 lsize;
 
     max = get_num_var_ranges ();
 	for (i = 0; i < max; ++i) {
-	(*get_mtrr) (i, &lbase, &lsize, &ltype);
+		get_mtrr (i, &lbase, &lsize, &ltype);
 		if (lsize == 0)
 			return i;
     }
@@ -573,22 +555,19 @@ static int generic_get_free_region (unsigned long base,
 }
 
 
-static int (*get_free_region) (unsigned long base,
-			       unsigned long size) = generic_get_free_region;
-
 /**
  *	mtrr_add_page - Add a memory type region
  *	@base: Physical base address of region in pages (4 KB)
  *	@size: Physical size of region in pages (4 KB)
  *	@type: Type of MTRR desired
  *	@increment: If this is true do usage counting on the region
+ *	Returns The MTRR register on success, else a negative number
+ *	indicating the error code.
  *
- *	Memory type region registers control the caching on newer Intel and
- *	non Intel processors. This function allows drivers to request an
- *	MTRR is added. The details and hardware specifics of each processor's
- *	implementation are hidden from the caller, but nevertheless the 
- *	caller should expect to need to provide a power of two size on an
- *	equivalent power of two boundary.
+ *	Memory type region registers control the caching on newer
+ *	processors. This function allows drivers to request an MTRR is added.
+ *	The caller should expect to need to provide a power of two size on
+ *	an equivalent power of two boundary.
  *
  *	If the region cannot be added either because all regions are in use
  *	or the CPU cannot support it a negative value is returned. On success
@@ -596,42 +575,28 @@ static int (*get_free_region) (unsigned long base,
  *	as a cookie only.
  *
  *	On a multiprocessor machine the changes are made to all processors.
- *	This is required on x86 by the Intel processors.
  *
  *	The available types are
  *
  *	%MTRR_TYPE_UNCACHABLE	-	No caching
- *
  *	%MTRR_TYPE_WRBACK	-	Write data back in bursts whenever
- *
  *	%MTRR_TYPE_WRCOMB	-	Write data back soon but allow bursts
- *
  *	%MTRR_TYPE_WRTHROUGH	-	Cache reads but not writes
  *
  *	BUGS: Needs a quiet flag for the cases where drivers do not mind
  *	failures and do not wish system log messages to be sent.
  */
 
-int mtrr_add_page (unsigned long base, unsigned long size,
-		unsigned int type, char increment)
+int mtrr_add_page (u64 base, u32 size, unsigned int type, char increment)
 {
-/*  [SUMMARY] Add an MTRR entry.
-    <base> The starting (base, in pages) address of the region.
-    <size> The size of the region. (in pages)
-    <type> The type of the new region.
-    <increment> If true and the region already exists, the usage count will be
-    incremented.
-    [RETURNS] The MTRR register on success, else a negative number indicating
-    the error code.
-    [NOTE] This routine uses a spinlock.
-*/
     int i, max;
     mtrr_type ltype;
-    unsigned long lbase, lsize, last;
+	u64 lbase, last;
+	u32 lsize;
 
 	if (base + size < 0x100) {
 		printk (KERN_WARNING
-			"mtrr: cannot set region below 1 MiB (0x%lx000,0x%lx000)\n",
+			"mtrr: cannot set region below 1 MiB (0x%lx000,0x%x000)\n",
 		    base, size);
 	    return -EINVAL;
 	}
@@ -644,7 +609,7 @@ int mtrr_add_page (unsigned long base, unsigned long size,
 
 	if (lbase != last) {
 		printk (KERN_WARNING
-			"mtrr: base(0x%lx000) is not aligned on a size(0x%lx000) boundary\n",
+			"mtrr: base(0x%lx000) is not aligned on a size(0x%x000) boundary\n",
 			base, size);
 	return -EINVAL;
     }
@@ -655,7 +620,7 @@ int mtrr_add_page (unsigned long base, unsigned long size,
     }
 
     /*  If the type is WC, check that this processor supports it  */
-	if ((type == MTRR_TYPE_WRCOMB) && !have_wrcomb ()) {
+	if ((type == MTRR_TYPE_WRCOMB) && !have_wrcomb()) {
 		printk (KERN_WARNING
 			"mtrr: your processor doesn't support write-combining\n");
         return -ENOSYS;
@@ -669,9 +634,9 @@ int mtrr_add_page (unsigned long base, unsigned long size,
     increment = increment ? 1 : 0;
     max = get_num_var_ranges ();
     /*  Search for existing MTRR  */
-	down (&main_lock);
+	down (&mtrr_lock);
 	for (i = 0; i < max; ++i) {
-	(*get_mtrr) (i, &lbase, &lsize, &ltype);
+		get_mtrr (i, &lbase, &lsize, &ltype);
 		if (base >= lbase + lsize)
 			continue;
 		if ((base < lbase) && (base + size <= lbase))
@@ -679,41 +644,41 @@ int mtrr_add_page (unsigned long base, unsigned long size,
 
 	/*  At this point we know there is some kind of overlap/enclosure  */
 		if ((base < lbase) || (base + size > lbase + lsize)) {
-			up (&main_lock);
+			up (&mtrr_lock);
 			printk (KERN_WARNING
-				"mtrr: 0x%lx000,0x%lx000 overlaps existing"
-				" 0x%lx000,0x%lx000\n", base, size, lbase,
-				lsize);
+				"mtrr: 0x%lx000,0x%x000 overlaps existing"
+				" 0x%lx000,0x%x000\n", base, size, lbase, lsize);
 	    return -EINVAL;
 	}
 	/*  New region is enclosed by an existing region  */
 		if (ltype != type) {
 			if (type == MTRR_TYPE_UNCACHABLE)
 				continue;
-			up (&main_lock);
+			up (&mtrr_lock);
 			printk
-			    ("mtrr: type mismatch for %lx000,%lx000 old: %s new: %s\n",
-			     base, size, attrib_to_str (ltype),
+			    ("mtrr: type mismatch for %lx000,%x000 old: %s new: %s\n",
+			     base, size,
+				 attrib_to_str (ltype),
 			     attrib_to_str (type));
 	    return -EINVAL;
 	}
 		if (increment)
 			++usage_table[i];
 	compute_ascii ();
-		up (&main_lock);
+		up (&mtrr_lock);
 	return i;
     }
     /*  Search for an empty MTRR  */
-    i = (*get_free_region) (base, size);
+	i = get_free_region();
 	if (i < 0) {
-		up (&main_lock);
+		up (&mtrr_lock);
 	printk ("mtrr: no more MTRRs available\n");
 	return i;
     }
     set_mtrr (i, base, size, type);
     usage_table[i] = 1;
     compute_ascii ();
-	up (&main_lock);
+	up (&mtrr_lock);
     return i;
 }
 
@@ -724,13 +689,13 @@ int mtrr_add_page (unsigned long base, unsigned long size,
  *	@size: Physical size of region
  *	@type: Type of MTRR desired
  *	@increment: If this is true do usage counting on the region
+ *	Return the MTRR register on success, else a negative numbe
+ *	indicating the error code.
  *
- *	Memory type region registers control the caching on newer Intel and
- *	non Intel processors. This function allows drivers to request an
- *	MTRR is added. The details and hardware specifics of each processor's
- *	implementation are hidden from the caller, but nevertheless the 
- *	caller should expect to need to provide a power of two size on an
- *	equivalent power of two boundary.
+ *	Memory type region registers control the caching on newer processors.
+ *	This function allows drivers to request an MTRR is added.
+ *	The caller should expect to need to provide a power of two size on
+ *	an equivalent power of two boundary.
  *
  *	If the region cannot be added either because all regions are in use
  *	or the CPU cannot support it a negative value is returned. On success
@@ -743,33 +708,19 @@ int mtrr_add_page (unsigned long base, unsigned long size,
  *	The available types are
  *
  *	%MTRR_TYPE_UNCACHABLE	-	No caching
- *
  *	%MTRR_TYPE_WRBACK	-	Write data back in bursts whenever
- *
  *	%MTRR_TYPE_WRCOMB	-	Write data back soon but allow bursts
- *
  *	%MTRR_TYPE_WRTHROUGH	-	Cache reads but not writes
  *
  *	BUGS: Needs a quiet flag for the cases where drivers do not mind
  *	failures and do not wish system log messages to be sent.
  */
 
-int mtrr_add (unsigned long base, unsigned long size, unsigned int type,
-		char increment)
+int mtrr_add (u64 base, u32 size, unsigned int type, char increment)
 {
-/*  [SUMMARY] Add an MTRR entry.
-    <base> The starting (base) address of the region.
-    <size> The size (in bytes) of the region.
-    <type> The type of the new region.
-    <increment> If true and the region already exists, the usage count will be
-    incremented.
-    [RETURNS] The MTRR register on success, else a negative number indicating
-    the error code.
-*/
-
 	if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
 	printk ("mtrr: size and base must be multiples of 4 kiB\n");
-	printk ("mtrr: size: 0x%lx  base: 0x%lx\n", size, base);
+		printk ("mtrr: size: 0x%x  base: 0x%lx\n", size, base);
 	return -EINVAL;
     }
 	return mtrr_add_page (base >> PAGE_SHIFT, size >> PAGE_SHIFT, type,
@@ -792,55 +743,46 @@ int mtrr_add (unsigned long base, unsigned long size, unsigned int type,
  *	code.
  */
  
-int mtrr_del_page (int reg, unsigned long base, unsigned long size)
-/*  [SUMMARY] Delete MTRR/decrement usage count.
-    <reg> The register. If this is less than 0 then <<base>> and <<size>> must
-    be supplied.
-    <base> The base address of the region. This is ignored if <<reg>> is >= 0.
-    <size> The size of the region. This is ignored if <<reg>> is >= 0.
-    [RETURNS] The register on success, else a negative number indicating
-    the error code.
-    [NOTE] This routine uses a spinlock.
-*/
+int mtrr_del_page (int reg, u64 base, u32 size)
 {
     int i, max;
     mtrr_type ltype;
-    unsigned long lbase, lsize;
+	u64 lbase;
+	u32 lsize;
 
     max = get_num_var_ranges ();
-    down (&main_lock);
+	down (&mtrr_lock);
 	if (reg < 0) {
 	/*  Search for existing MTRR  */
 		for (i = 0; i < max; ++i) {
-	    (*get_mtrr) (i, &lbase, &lsize, &ltype);
+			get_mtrr (i, &lbase, &lsize, &ltype);
 			if (lbase == base && lsize == size) {
 		reg = i;
 		break;
 	    }
 	}
 		if (reg < 0) {
-			up (&main_lock);
-			printk ("mtrr: no MTRR for %lx000,%lx000 found\n", base,
-				size);
+			up (&mtrr_lock);
+			printk ("mtrr: no MTRR for %lx000,%x000 found\n", base, size);
 	    return -EINVAL;
 	}
     }
 
 	if (reg >= max) {
-	up (&main_lock);
+		up (&mtrr_lock);
 	printk ("mtrr: register: %d too big\n", reg);
 	return -EINVAL;
     }
-    (*get_mtrr) (reg, &lbase, &lsize, &ltype);
+	get_mtrr (reg, &lbase, &lsize, &ltype);
 
 	if (lsize < 1) {
-	up (&main_lock);
+		up (&mtrr_lock);
 	printk ("mtrr: MTRR %d not used\n", reg);
 	return -EINVAL;
     }
 
 	if (usage_table[reg] < 1) {
-	up (&main_lock);
+		up (&mtrr_lock);
 	printk ("mtrr: reg: %d has count=0\n", reg);
 	return -EINVAL;
     }
@@ -848,7 +790,7 @@ int mtrr_del_page (int reg, unsigned long base, unsigned long size)
 	if (--usage_table[reg] < 1)
 		set_mtrr (reg, 0, 0, 0);
     compute_ascii ();
-    up (&main_lock);
+	up (&mtrr_lock);
     return reg;
 }
 
@@ -868,19 +810,11 @@ int mtrr_del_page (int reg, unsigned long base, unsigned long size)
  *	code.
  */
  
-int mtrr_del (int reg, unsigned long base, unsigned long size)
-/*  [SUMMARY] Delete MTRR/decrement usage count.
-    <reg> The register. If this is less than 0 then <<base>> and <<size>> must
-    be supplied.
-    <base> The base address of the region. This is ignored if <<reg>> is >= 0.
-    <size> The size of the region. This is ignored if <<reg>> is >= 0.
-    [RETURNS] The register on success, else a negative number indicating
-    the error code.
-*/
+int mtrr_del (int reg, u64 base, u32 size)
 {
 	if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
 	printk ("mtrr: size and base must be multiples of 4 kiB\n");
-	printk ("mtrr: size: 0x%lx  base: 0x%lx\n", size, base);
+		printk ("mtrr: size: 0x%x  base: 0x%lx\n", size, base);
 	return -EINVAL;
     }
 	return mtrr_del_page (reg, base >> PAGE_SHIFT, size >> PAGE_SHIFT);
@@ -889,8 +823,8 @@ int mtrr_del (int reg, unsigned long base, unsigned long size)
 
 #ifdef USERSPACE_INTERFACE
 
-static int mtrr_file_add (unsigned long base, unsigned long size,
-			  unsigned int type, char increment, struct file *file, int page)
+static int mtrr_file_add (u64 base, u32 size, unsigned int type,
+		struct file *file, int page)
 {
     int reg, max;
     unsigned int *fcount = file->private_data;
@@ -910,7 +844,7 @@ static int mtrr_file_add (unsigned long base, unsigned long size,
 		if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
 			printk
 			    ("mtrr: size and base must be multiples of 4 kiB\n");
-	    printk ("mtrr: size: 0x%lx  base: 0x%lx\n", size, base);
+			printk ("mtrr: size: 0x%x  base: 0x%lx\n", size, base);
 	    return -EINVAL;
 	}
 	base >>= PAGE_SHIFT;
@@ -925,7 +859,7 @@ static int mtrr_file_add (unsigned long base, unsigned long size,
 }
 
 
-static int mtrr_file_del (unsigned long base, unsigned long size,
+static int mtrr_file_del (u64 base, u32 size,
 			  struct file *file, int page)
 {
     int reg;
@@ -935,7 +869,7 @@ static int mtrr_file_del (unsigned long base, unsigned long size,
 		if ((base & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1))) {
 			printk
 			    ("mtrr: size and base must be multiples of 4 kiB\n");
-	    printk ("mtrr: size: 0x%lx  base: 0x%lx\n", size, base);
+			printk ("mtrr: size: 0x%x  base: 0x%lx\n", size, base);
 	    return -EINVAL;
 	}
 	base >>= PAGE_SHIFT;
@@ -977,9 +911,9 @@ static ssize_t mtrr_write (struct file *file, const char *buf,
     "disable=%d"
 */
 {
-    int i, err;
-    unsigned long reg;
-    unsigned long long base, size;
+	int i, err, reg;
+	u64 base;
+	u32 size;
     char *ptr;
     char line[LINE_SIZE];
 
@@ -1027,7 +961,7 @@ static ssize_t mtrr_write (struct file *file, const char *buf,
 
 	if ((base & 0xfff) || (size & 0xfff)) {
 	printk ("mtrr: size and base must be multiples of 4 kiB\n");
-	printk ("mtrr: size: 0x%Lx  base: 0x%Lx\n", size, base);
+		printk ("mtrr: size: 0x%x  base: 0x%lx\n", size, base);
 	return -EINVAL;
     }
 
@@ -1046,9 +980,7 @@ static ssize_t mtrr_write (struct file *file, const char *buf,
 			continue;
 	base >>= PAGE_SHIFT;
 	size >>= PAGE_SHIFT;
-		err =
-		    mtrr_add_page ((unsigned long) base, (unsigned long) size,
-				   i, 1);
+		err = mtrr_add_page ((u64) base, size, i, 1);
 		if (err < 0)
 			return err;
 	return len;
@@ -1076,7 +1008,7 @@ static int mtrr_ioctl (struct inode *inode, struct file *file,
 		if (copy_from_user (&sentry, (void *) arg, sizeof sentry))
 	    return -EFAULT;
 		err =
-		    mtrr_file_add (sentry.base, sentry.size, sentry.type, 1,
+		    mtrr_file_add (sentry.base, sentry.size, sentry.type,
 				   file, 0);
 		if (err < 0)
 			return err;
@@ -1117,7 +1049,7 @@ static int mtrr_ioctl (struct inode *inode, struct file *file,
 	    return -EFAULT;
 		if (gentry.regnum >= get_num_var_ranges ())
 			return -EINVAL;
-	(*get_mtrr) (gentry.regnum, &gentry.base, &gentry.size, &type);
+		get_mtrr (gentry.regnum, &gentry.base, &gentry.size, &type);
 
 	/* Hide entries that go above 4GB */
 		if (gentry.base + gentry.size > 0x100000
@@ -1139,7 +1071,7 @@ static int mtrr_ioctl (struct inode *inode, struct file *file,
 		if (copy_from_user (&sentry, (void *) arg, sizeof sentry))
 	    return -EFAULT;
 		err =
-		    mtrr_file_add (sentry.base, sentry.size, sentry.type, 1,
+		    mtrr_file_add (sentry.base, sentry.size, sentry.type,
 				   file, 1);
 		if (err < 0)
 			return err;
@@ -1180,7 +1112,7 @@ static int mtrr_ioctl (struct inode *inode, struct file *file,
 	    return -EFAULT;
 		if (gentry.regnum >= get_num_var_ranges ())
 			return -EINVAL;
-	(*get_mtrr) (gentry.regnum, &gentry.base, &gentry.size, &type);
+		get_mtrr (gentry.regnum, &gentry.base, &gentry.size, &type);
 	gentry.type = type;
 
 		if (copy_to_user ((void *) arg, &gentry, sizeof gentry))
@@ -1199,7 +1131,6 @@ static int mtrr_close (struct inode *ino, struct file *file)
 	if (fcount == NULL)
 		return 0;
 
-	lock_kernel ();
     max = get_num_var_ranges ();
 	for (i = 0; i < max; ++i) {
 		while (fcount[i] > 0) {
@@ -1208,7 +1139,6 @@ static int mtrr_close (struct inode *ino, struct file *file)
 	    --fcount[i];
 	}
     }
-	unlock_kernel ();
     kfree (fcount);
     file->private_data = NULL;
     return 0;
@@ -1234,12 +1164,13 @@ static void compute_ascii (void)
     char factor;
     int i, max;
     mtrr_type type;
-    unsigned long base, size;
+	u64 base;
+	u32 size;
 
     ascii_buf_bytes = 0;
     max = get_num_var_ranges ();
 	for (i = 0; i < max; i++) {
-	(*get_mtrr) (i, &base, &size, &type);
+		get_mtrr (i, &base, &size, &type);
 		if (size == 0)
 			usage_table[i] = 0;
 		else {
@@ -1253,11 +1184,10 @@ static void compute_ascii (void)
 	    }
 	    sprintf
 		(ascii_buffer + ascii_buf_bytes,
-		 "reg%02i: base=0x%05lx000 (%4liMB), size=%4li%cB: %s, count=%d\n",
+			     "reg%02i: base=0x%05lx000 (%4liMB), size=%4i%cB: %s, count=%d\n",
 		 i, base, base >> (20 - PAGE_SHIFT), size, factor,
 		 attrib_to_str (type), usage_table[i]);
-			ascii_buf_bytes +=
-			    strlen (ascii_buffer + ascii_buf_bytes);
+			ascii_buf_bytes += strlen (ascii_buffer + ascii_buf_bytes);
 	}
     }
     devfs_set_file_size (devfs_handle, ascii_buf_bytes);
@@ -1283,22 +1213,16 @@ static void __init mtrr_setup (void)
 		if ((cpuid_eax (0x80000000) >= 0x80000008)) {
 			u32	phys_addr;
 			phys_addr = cpuid_eax (0x80000008) & 0xff;
-			size_or_mask =
-			    ~((1 << (phys_addr - PAGE_SHIFT)) - 1);
-			size_and_mask = ~size_or_mask & 0xfff00000;
-		} else {
-			/* FIXME: This is to make it work on Athlon during debugging. */
-		size_or_mask  = 0xff000000; /* 36 bits */
-		size_and_mask = 0x00f00000;
+			size_or_mask = ~((1 << (phys_addr - PAGE_SHIFT)) - 1);
+			size_and_mask = ~size_or_mask & 0xfffffffffff00000;
 	}
-
 		printk ("mtrr: detected mtrr type: x86-64\n");
     }
 }
 
 #ifdef CONFIG_SMP
 
-static volatile unsigned long smp_changes_mask __initdata = 0;
+static volatile u32 smp_changes_mask __initdata = 0;
 static struct mtrr_state smp_mtrr_state __initdata = { 0, 0 };
 
 void __init mtrr_init_boot_cpu (void)
@@ -1310,7 +1234,8 @@ void __init mtrr_init_boot_cpu (void)
 
 void __init mtrr_init_secondary_cpu (void)
 {
-    unsigned long mask, count;
+	u64 mask;
+	int count;
     struct set_mtrr_context ctxt;
 
     /*  Note that this is not ideal, since the cache is only flushed/disabled
@@ -1357,4 +1282,3 @@ int __init mtrr_init (void)
     init_table ();
     return 0;
 }
-

arch/x86_64/kernel/process.c

@@ -39,6 +39,7 @@
 #include <linux/reboot.h>
 #include <linux/init.h>
 #include <linux/ctype.h>
+#include <linux/slab.h>
 
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
@@ -320,9 +321,6 @@ void show_regs(struct pt_regs * regs)
 	printk("CR2: %016lx CR3: %016lx CR4: %016lx\n", cr2, cr3, cr4);
 }
 
-#define __STR(x) #x
-#define __STR2(x) __STR(x)
-
 extern void load_gs_index(unsigned);
 
 /*
@@ -330,7 +328,13 @@ extern void load_gs_index(unsigned);
  */
 void exit_thread(void)
 {
-	/* nothing to do ... */
+	struct task_struct *me = current;
+	if (me->thread.io_bitmap_ptr) { 
+		kfree(me->thread.io_bitmap_ptr); 
+		me->thread.io_bitmap_ptr = NULL;
+		(init_tss + smp_processor_id())->io_map_base = 
+			INVALID_IO_BITMAP_OFFSET;
+	}
 }
 
 void flush_thread(void)
@@ -392,6 +396,14 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long rsp,
 	unlazy_fpu(current);	
 	p->thread.i387 = current->thread.i387;
 
+	if (unlikely(me->thread.io_bitmap_ptr != NULL)) { 
+		p->thread.io_bitmap_ptr = kmalloc((IO_BITMAP_SIZE+1)*4, GFP_KERNEL);
+		if (!p->thread.io_bitmap_ptr) 
+			return -ENOMEM;
+		memcpy(p->thread.io_bitmap_ptr, me->thread.io_bitmap_ptr, 
+		       (IO_BITMAP_SIZE+1)*4);
+	} 
+
 	return 0;
 }
 
@@ -491,21 +503,14 @@ void __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	/* 
 	 * Handle the IO bitmap 
 	 */ 
-	if (unlikely(prev->ioperm || next->ioperm)) {
-		if (next->ioperm) {
+	if (unlikely(prev->io_bitmap_ptr || next->io_bitmap_ptr)) {
+		if (next->io_bitmap_ptr) {
 			/*
 			 * 4 cachelines copy ... not good, but not that
 			 * bad either. Anyone got something better?
 			 * This only affects processes which use ioperm().
-			 * [Putting the TSSs into 4k-tlb mapped regions
-			 * and playing VM tricks to switch the IO bitmap
-			 * is not really acceptable.]
-			 * On x86-64 we could put multiple bitmaps into 
-			 * the GDT and just switch offsets
-			 * This would require ugly special cases on overflow
-			 * though -AK 
 			 */
-			memcpy(tss->io_bitmap, next->io_bitmap,
+			memcpy(tss->io_bitmap, next->io_bitmap_ptr,
 				 IO_BITMAP_SIZE*sizeof(u32));
 			tss->io_map_base = IO_BITMAP_OFFSET;
 		} else {

arch/x86_64/kernel/setup64.c

@@ -91,6 +91,9 @@ void pda_init(int cpu)
 	pda->me = pda;
 	pda->cpudata_offset = 0;
 
+	pda->active_mm = &init_mm;
+	pda->mmu_state = 0;
+	
 	asm volatile("movl %0,%%fs ; movl %0,%%gs" :: "r" (0)); 
 	wrmsrl(MSR_GS_BASE, cpu_pda + cpu);
 } 

arch/x86_64/kernel/signal.c

@@ -84,7 +84,6 @@ struct rt_sigframe
 	char *pretcode;
 	struct ucontext uc;
 	struct siginfo info;
-	struct _fpstate fpstate;
 };
 
 static int
@@ -186,8 +185,7 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs regs)
  */
 
 static int
-setup_sigcontext(struct sigcontext *sc, struct _fpstate *fpstate,
-		 struct pt_regs *regs, unsigned long mask)
+setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs, unsigned long mask)
 {
 	int tmp, err = 0;
 	struct task_struct *me = current;
@@ -221,20 +219,17 @@ setup_sigcontext(struct sigcontext *sc, struct _fpstate *fpstate,
 	err |= __put_user(mask, &sc->oldmask);
 	err |= __put_user(me->thread.cr2, &sc->cr2);
 
-	tmp = save_i387(fpstate);
-	if (tmp < 0)
-	  err = 1;
-	else
-	  err |= __put_user(tmp ? fpstate : NULL, &sc->fpstate);
-
 	return err;
 }
 
 /*
  * Determine which stack to use..
  */
-static inline struct rt_sigframe *
-get_sigframe(struct k_sigaction *ka, struct pt_regs * regs)
+
+#define round_down(p, r) ((void *)  ((unsigned long)((p) - (r) + 1) & ~((r)-1)))
+
+static void *
+get_stack(struct k_sigaction *ka, struct pt_regs *regs, unsigned long size)
 {
 	unsigned long rsp;
 
@@ -247,22 +242,34 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs * regs)
 			rsp = current->sas_ss_sp + current->sas_ss_size;
 	}
 
-	rsp = (rsp - sizeof(struct _fpstate)) & ~(15UL); 
-	rsp -= offsetof(struct rt_sigframe, fpstate);
-
-	return (struct rt_sigframe *) rsp; 
+	return round_down(rsp - size, 16); 
 }
 
 static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 			   sigset_t *set, struct pt_regs * regs)
 {
-	struct rt_sigframe *frame;
+	struct rt_sigframe *frame = NULL;
+	struct _fpstate *fp = NULL; 
 	int err = 0;
 
-	frame = get_sigframe(ka, regs);
+	if (current->used_math) {
+		fp = get_stack(ka, regs, sizeof(struct _fpstate)); 
+		frame = round_down((char *)fp - sizeof(struct rt_sigframe), 16) - 8;
 
-	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+		if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate))) { 
 		goto give_sigsegv;
+		}
+
+		if (save_i387(fp) < 0) 
+			err |= -1; 
+	}
+
+	if (!frame)
+		frame = get_stack(ka, regs, sizeof(struct rt_sigframe)) - 8;
+
+	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) {
+		goto give_sigsegv;
+	}
 
 	if (ka->sa.sa_flags & SA_SIGINFO) { 
 		err |= copy_siginfo_to_user(&frame->info, info);
@@ -278,14 +285,10 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	err |= __put_user(sas_ss_flags(regs->rsp),
 			  &frame->uc.uc_stack.ss_flags);
 	err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
-	err |= setup_sigcontext(&frame->uc.uc_mcontext, &frame->fpstate,
-			        regs, set->sig[0]);
+	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);
+	err |= __put_user(fp, &frame->uc.uc_mcontext.fpstate);
 	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
 
-	if (err) { 
-		goto give_sigsegv;
-	} 
-
 	/* Set up to return from userspace.  If provided, use a stub
 	   already in userspace.  */
 	/* x86-64 should always use SA_RESTORER. */
@@ -297,7 +300,6 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	}
 
 	if (err) { 
-		printk("fault 3\n"); 
 		goto give_sigsegv;
 	} 
 
@@ -305,7 +307,6 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	printk("%d old rip %lx old rsp %lx old rax %lx\n", current->pid,regs->rip,regs->rsp,regs->rax);
 #endif
 
-
 	/* Set up registers for signal handler */
 	{ 
 		struct exec_domain *ed = current_thread_info()->exec_domain;
@@ -320,9 +321,10 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	   next argument after the signal number on the stack. */
 	regs->rsi = (unsigned long)&frame->info; 
 	regs->rdx = (unsigned long)&frame->uc; 
-	regs->rsp = (unsigned long) frame;
 	regs->rip = (unsigned long) ka->sa.sa_handler;
 
+	regs->rsp = (unsigned long)frame;
+
 	set_fs(USER_DS);
 	regs->eflags &= ~TF_MASK;
 

arch/x86_64/kernel/smp.c

@@ -25,8 +25,6 @@
 /* The 'big kernel lock' */
 spinlock_t kernel_flag __cacheline_aligned_in_smp = SPIN_LOCK_UNLOCKED;
 
-struct tlb_state cpu_tlbstate[NR_CPUS] = {[0 ... NR_CPUS-1] = { &init_mm, 0 }};
-
 /*
  * the following functions deal with sending IPIs between CPUs.
  *
@@ -147,9 +145,9 @@ static spinlock_t tlbstate_lock = SPIN_LOCK_UNLOCKED;
  */
 static void inline leave_mm (unsigned long cpu)
 {
-	if (cpu_tlbstate[cpu].state == TLBSTATE_OK)
+	if (read_pda(mmu_state) == TLBSTATE_OK)
 		BUG();
-	clear_bit(cpu, &cpu_tlbstate[cpu].active_mm->cpu_vm_mask);
+	clear_bit(cpu, &read_pda(active_mm)->cpu_vm_mask);
 	__flush_tlb();
 }
 
@@ -164,18 +162,18 @@ static void inline leave_mm (unsigned long cpu)
  * 	the other cpus, but smp_invalidate_interrupt ignore flush ipis
  * 	for the wrong mm, and in the worst case we perform a superflous
  * 	tlb flush.
- * 1a2) set cpu_tlbstate to TLBSTATE_OK
+ * 1a2) set cpu mmu_state to TLBSTATE_OK
  * 	Now the smp_invalidate_interrupt won't call leave_mm if cpu0
  *	was in lazy tlb mode.
- * 1a3) update cpu_tlbstate[].active_mm
+ * 1a3) update cpu active_mm
  * 	Now cpu0 accepts tlb flushes for the new mm.
  * 1a4) set_bit(cpu, &new_mm->cpu_vm_mask);
  * 	Now the other cpus will send tlb flush ipis.
  * 1a4) change cr3.
  * 1b) thread switch without mm change
- *	cpu_tlbstate[].active_mm is correct, cpu0 already handles
+ *	cpu active_mm is correct, cpu0 already handles
  *	flush ipis.
- * 1b1) set cpu_tlbstate to TLBSTATE_OK
+ * 1b1) set cpu mmu_state to TLBSTATE_OK
  * 1b2) test_and_set the cpu bit in cpu_vm_mask.
  * 	Atomically set the bit [other cpus will start sending flush ipis],
  * 	and test the bit.
@@ -188,7 +186,7 @@ static void inline leave_mm (unsigned long cpu)
  *   runs in kernel space, the cpu could load tlb entries for user space
  *   pages.
  *
- * The good news is that cpu_tlbstate is local to each cpu, no
+ * The good news is that cpu mmu_state is local to each cpu, no
  * write/read ordering problems.
  */
 
@@ -216,8 +214,8 @@ asmlinkage void smp_invalidate_interrupt (void)
 		 * BUG();
 		 */
 		 
-	if (flush_mm == cpu_tlbstate[cpu].active_mm) {
-		if (cpu_tlbstate[cpu].state == TLBSTATE_OK) {
+	if (flush_mm == read_pda(active_mm)) {
+		if (read_pda(mmu_state) == TLBSTATE_OK) {
 			if (flush_va == FLUSH_ALL)
 				local_flush_tlb();
 			else
@@ -335,7 +333,7 @@ static inline void do_flush_tlb_all_local(void)
 	unsigned long cpu = smp_processor_id();
 
 	__flush_tlb_all();
-	if (cpu_tlbstate[cpu].state == TLBSTATE_LAZY)
+	if (read_pda(mmu_state) == TLBSTATE_LAZY)
 		leave_mm(cpu);
 }
 

arch/x86_64/kernel/vsyscall.c

@@ -47,7 +47,7 @@
 
 #define __vsyscall(nr) __attribute__ ((unused,__section__(".vsyscall_" #nr)))
 
-#define NO_VSYSCALL 1
+//#define NO_VSYSCALL 1
 
 #ifdef NO_VSYSCALL
 #include <asm/unistd.h>

arch/x86_64/kernel/x8664_ksyms.c

@@ -189,3 +189,5 @@ EXPORT_SYMBOL_NOVERS(do_softirq_thunk);
 
 void out_of_line_bug(void);
 EXPORT_SYMBOL(out_of_line_bug);
+
+EXPORT_SYMBOL(init_level4_pgt);

arch/x86_64/lib/Makefile

@@ -12,7 +12,7 @@ obj-y  = csum-partial.o csum-copy.o csum-wrappers.o delay.o \
 	thunk.o io.o clear_page.o copy_page.o
 obj-y += memcpy.o
 obj-y += memmove.o
-#obj-y += memset.o
+obj-y += memset.o
 obj-y += copy_user.o
 
 export-objs := io.o csum-wrappers.o csum-partial.o

arch/x86_64/lib/memset.S

-/* Copyright 2002 Andi Kleen, SuSE Labs */
-
-	// #define FIX_ALIGNMENT 1
+/* Copyright 2002 Andi Kleen */
 
 /*
  * ISO C memset - set a memory block to a byte value.
@@ -11,51 +9,51 @@
  * 
  * rax   original destination
  */	
-	.globl ____memset
+ 	.globl __memset
+	.globl memset
 	.p2align
-____memset:
-	movq %rdi,%r10		/* save destination for return address */
-	movq %rdx,%r11		/* save count */ 
+memset:	
+__memset:
+	movq %rdi,%r10
+	movq %rdx,%r11
 
 	/* expand byte value  */
-	movzbl %sil,%ecx	/* zero extend char value */
-	movabs $0x0101010101010101,%rax		/* expansion pattern */
-	mul    %rcx		/* expand with rax, clobbers rdx */
+	movzbl %sil,%ecx
+	movabs $0x0101010101010101,%rax
+	mul    %rcx		/* with rax, clobbers rdx */
 
-#ifdef FIX_ALIGNMENT
 	/* align dst */
 	movl  %edi,%r9d		
-	andl  $7,%r9d		/* test unaligned bits */
+	andl  $7,%r9d	
 	jnz  bad_alignment
 after_bad_alignment:
-#endif
 	
-	movq %r11,%rcx		/* restore count */
-	shrq $6,%rcx		/* divide by 64 */
-	jz	 handle_tail	/* block smaller than 64 bytes? */
-	movl $64,%r8d		/* CSE loop block size */
+	movq %r11,%rcx
+	movl $64,%r8d
+	shrq $6,%rcx
+	jz	 handle_tail
 
 loop_64:	
-	movnti  %rax,0*8(%rdi) 
-	movnti  %rax,1*8(%rdi) 
-	movnti  %rax,2*8(%rdi) 
-	movnti  %rax,3*8(%rdi) 
-	movnti  %rax,4*8(%rdi) 
-	movnti  %rax,5*8(%rdi) 
-	movnti  %rax,6*8(%rdi) 
-	movnti  %rax,7*8(%rdi) 	/* clear 64 byte blocks */
-	addq    %r8,%rdi	/* increase pointer by 64 bytes */
-	loop	loop_64		/* decrement rcx and if not zero loop */
+	movnti  %rax,(%rdi) 
+	movnti  %rax,8(%rdi) 
+	movnti  %rax,16(%rdi) 
+	movnti  %rax,24(%rdi) 
+	movnti  %rax,32(%rdi) 
+	movnti  %rax,40(%rdi) 
+	movnti  %rax,48(%rdi) 
+	movnti  %rax,56(%rdi) 
+	addq    %r8,%rdi
+	loop	loop_64
 
 	/* Handle tail in loops. The loops should be faster than hard
 	   to predict jump tables. */ 
 handle_tail:
 	movl	%r11d,%ecx
-	andl    $63,%ecx
-	shrl	$3,%ecx
+	andl    $63&(~7),%ecx
 	jz 	handle_7
+	shrl	$3,%ecx
 loop_8:
-	movnti  %rax,(%rdi) 	/* long words */
+	movnti  %rax,(%rdi) 
 	addq    $8,%rdi
 	loop 	loop_8   
 
@@ -64,22 +62,20 @@ handle_7:
 	andl	$7,%ecx
 	jz      ende
 loop_1:
-	movb 	%al,(%rdi)	/* bytes */
-	incq	%rdi
+	movb 	%al,(%rdi)
+	addq	$1,%rdi
 	loop	loop_1
 	
 ende:	
 	movq	%r10,%rax
 	ret
 
-#ifdef FIX_ALIGNMENT
 bad_alignment:
-	andq $-8,%r11		/* shorter than 8 bytes */
-	jz      handle_7	/* if yes handle it in the tail code */
-	movnti %rax,(%rdi)	/* unaligned store of 8 bytes */
+	cmpq $7,%r11
+	jbe	handle_7
+	movnti %rax,(%rdi)	/* unaligned store */
 	movq $8,%r8			
-	subq %r9,%r8 		/* compute alignment (8-misalignment) */
-	addq %r8,%rdi		/* fix destination */
-	subq %r8,%r11		/* fix count */
+	subq %r9,%r8 
+	addq %r8,%rdi
+	subq %r8,%r11
 	jmp after_bad_alignment
-#endif

include/asm-x86_64/i387.h

@@ -16,11 +16,22 @@
 #include <asm/processor.h>
 #include <asm/sigcontext.h>
 #include <asm/user.h>
+#include <asm/thread_info.h>
 
 extern void fpu_init(void);
 extern void init_fpu(void);
 int save_i387(struct _fpstate *buf);
 
+static inline int need_signal_i387(struct task_struct *me) 
+{ 
+	if (!me->used_math)
+		return 0;
+	me->used_math = 0; 
+	if (!test_thread_flag(TIF_USEDFPU))
+		return 0;
+	return 1;
+} 
+
 /*
  * FPU lazy state save handling...
  */

include/asm-x86_64/ia32.h

@@ -18,7 +18,9 @@ typedef int		       __kernel_clock_t32;
 typedef int		       __kernel_pid_t32;
 typedef unsigned short	       __kernel_ipc_pid_t32;
 typedef unsigned short	       __kernel_uid_t32;
+typedef unsigned 				__kernel_uid32_t32;
 typedef unsigned short	       __kernel_gid_t32;
+typedef unsigned 				__kernel_gid32_t32;
 typedef unsigned short	       __kernel_dev_t32;
 typedef unsigned int	       __kernel_ino_t32;
 typedef unsigned short	       __kernel_mode_t32;

include/asm-x86_64/ipc.h

 #ifndef __i386_IPC_H__
 #define __i386_IPC_H__
 
-/* 
- * These are used to wrap system calls on x86.
- *
- * See arch/i386/kernel/sys_i386.c for ugly details..
- *
- * (on x86-64 only used for 32bit emulation) 
- */
-
-struct ipc_kludge {
-	struct msgbuf *msgp;
-	long msgtyp;
-};
-
-#define SEMOP		 1
-#define SEMGET		 2
-#define SEMCTL		 3
-#define MSGSND		11
-#define MSGRCV		12
-#define MSGGET		13
-#define MSGCTL		14
-#define SHMAT		21
-#define SHMDT		22
-#define SHMGET		23
-#define SHMCTL		24
-
-/* Used by the DIPC package, try and avoid reusing it */
-#define DIPC            25
-
-#define IPCCALL(version,op)	((version)<<16 | (op))
+/* dummy */
 
 #endif

include/asm-x86_64/mmu_context.h

@@ -19,8 +19,8 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
 
 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk, unsigned cpu)
 {
-	if(cpu_tlbstate[cpu].state == TLBSTATE_OK)
-		cpu_tlbstate[cpu].state = TLBSTATE_LAZY;	
+	if (read_pda(mmu_state) == TLBSTATE_OK) 
+		write_pda(mmu_state, TLBSTATE_LAZY);
 }
 #else
 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk, unsigned cpu)
@@ -35,8 +35,8 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 		/* stop flush ipis for the previous mm */
 		clear_bit(cpu, &prev->cpu_vm_mask);
 #ifdef CONFIG_SMP
-		cpu_tlbstate[cpu].state = TLBSTATE_OK;
-		cpu_tlbstate[cpu].active_mm = next;
+		write_pda(mmu_state, TLBSTATE_OK);
+		write_pda(active_mm, next);
 #endif
 		set_bit(cpu, &next->cpu_vm_mask);
 		/* Re-load page tables */
@@ -48,8 +48,8 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	}
 #ifdef CONFIG_SMP
 	else {
-		cpu_tlbstate[cpu].state = TLBSTATE_OK;
-		if(cpu_tlbstate[cpu].active_mm != next)
+		write_pda(mmu_state, TLBSTATE_OK);
+		if (read_pda(active_mm) != next)
 			out_of_line_bug();
 		if(!test_and_set_bit(cpu, &next->cpu_vm_mask)) {
 			/* We were in lazy tlb mode and leave_mm disabled 

include/asm-x86_64/msr.h

@@ -95,6 +95,7 @@
 #define MSR_IA32_PERFCTR0      0xc1
 #define MSR_IA32_PERFCTR1      0xc2
 
+#define MSR_MTRRcap		0x0fe
 #define MSR_IA32_BBL_CR_CTL        0x119
 
 #define MSR_IA32_MCG_CAP       0x179
@@ -110,6 +111,19 @@
 #define MSR_IA32_LASTINTFROMIP     0x1dd
 #define MSR_IA32_LASTINTTOIP       0x1de
 
+#define MSR_MTRRfix64K_00000	0x250
+#define MSR_MTRRfix16K_80000	0x258
+#define MSR_MTRRfix16K_A0000	0x259
+#define MSR_MTRRfix4K_C0000	0x268
+#define MSR_MTRRfix4K_C8000	0x269
+#define MSR_MTRRfix4K_D0000	0x26a
+#define MSR_MTRRfix4K_D8000	0x26b
+#define MSR_MTRRfix4K_E0000	0x26c
+#define MSR_MTRRfix4K_E8000	0x26d
+#define MSR_MTRRfix4K_F0000	0x26e
+#define MSR_MTRRfix4K_F8000	0x26f
+#define MSR_MTRRdefType		0x2ff
+
 #define MSR_IA32_MC0_CTL       0x400
 #define MSR_IA32_MC0_STATUS        0x401
 #define MSR_IA32_MC0_ADDR      0x402
@@ -171,11 +185,4 @@
 #define MSR_IA32_APICBASE_ENABLE        (1<<11)
 #define MSR_IA32_APICBASE_BASE          (0xfffff<<12)
 
-
-#define MSR_IA32_THERM_CONTROL		0x19a
-#define MSR_IA32_THERM_INTERRUPT	0x19b
-#define MSR_IA32_THERM_STATUS		0x19c
-#define MSR_IA32_MISC_ENABLE		0x1a0
-
-
 #endif

include/asm-x86_64/mtrr.h

@@ -30,16 +30,16 @@
 
 struct mtrr_sentry
 {
-    unsigned long base;    /*  Base address     */
-    unsigned long size;    /*  Size of region   */
+    __u64 base;    /*  Base address     */
+    __u32 size;    /*  Size of region   */
     unsigned int type;     /*  Type of region   */
 };
 
 struct mtrr_gentry
 {
+    __u64 base;    /*  Base address     */
+    __u32 size;    /*  Size of region   */
     unsigned int regnum;   /*  Register number  */
-    unsigned long base;    /*  Base address     */
-    unsigned long size;    /*  Size of region   */
     unsigned int type;     /*  Type of region   */
 };
 
@@ -81,46 +81,38 @@ static char *mtrr_strings[MTRR_NUM_TYPES] =
 #ifdef __KERNEL__
 
 /*  The following functions are for use by other drivers  */
-# ifdef CONFIG_MTRR
-extern int mtrr_add (unsigned long base, unsigned long size,
-		     unsigned int type, char increment);
-extern int mtrr_add_page (unsigned long base, unsigned long size,
-		     unsigned int type, char increment);
-extern int mtrr_del (int reg, unsigned long base, unsigned long size);
-extern int mtrr_del_page (int reg, unsigned long base, unsigned long size);
-extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi);
-#  else
-static __inline__ int mtrr_add (unsigned long base, unsigned long size,
+#ifdef CONFIG_MTRR
+extern int mtrr_add (__u64 base, __u32 size, unsigned int type, char increment);
+extern int mtrr_add_page (__u64 base, __u32 size, unsigned int type, char increment);
+extern int mtrr_del (int reg, __u64 base, __u32 size);
+extern int mtrr_del_page (int reg, __u64 base, __u32 size);
+#else
+static __inline__ int mtrr_add (__u64 base, __u32 size,
 				unsigned int type, char increment)
 {
     return -ENODEV;
 }
-static __inline__ int mtrr_add_page (unsigned long base, unsigned long size,
+static __inline__ int mtrr_add_page (__u64 base, __u32 size,
 				unsigned int type, char increment)
 {
     return -ENODEV;
 }
-static __inline__ int mtrr_del (int reg, unsigned long base,
-				unsigned long size)
+static __inline__ int mtrr_del (int reg, __u64 base, __u32 size)
 {
     return -ENODEV;
 }
-static __inline__ int mtrr_del_page (int reg, unsigned long base,
-				unsigned long size)
+static __inline__ int mtrr_del_page (int reg, __u64 base, __u32 size)
 {
     return -ENODEV;
 }
-
-static __inline__ void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi) {;}
-
-#  endif
+#endif
 
 /*  The following functions are for initialisation: don't use them!  */
 extern int mtrr_init (void);
-#  if defined(CONFIG_SMP) && defined(CONFIG_MTRR)
+#if defined(CONFIG_SMP) && defined(CONFIG_MTRR)
 extern void mtrr_init_boot_cpu (void);
 extern void mtrr_init_secondary_cpu (void);
-#  endif
+#endif
 
 #endif
 

include/asm-x86_64/pda.h

@@ -22,6 +22,8 @@ struct x8664_pda {
 	unsigned int __local_bh_count;
 	unsigned int __nmi_count;	/* arch dependent */
 	struct task_struct * __ksoftirqd_task; /* waitqueue is too large */
+	struct mm_struct *active_mm;
+	int mmu_state;     
 } ____cacheline_aligned;
 
 #define PDA_STACKOFFSET (5*8)

include/asm-x86_64/processor.h

@@ -45,21 +45,12 @@ struct cpuinfo_x86 {
 	__u8	x86_vendor;	/* CPU vendor */
 	__u8	x86_model;
 	__u8	x86_mask;
-  /* We know that wp_works_ok = 1, hlt_works_ok = 1, hard_math = 1,
-     etc... */
-	char	wp_works_ok;	/* It doesn't on 386's */
-	char	hlt_works_ok;	/* Problems on some 486Dx4's and old 386's */
-	char	hard_math;
-	char	rfu;
 	int	cpuid_level;	/* Maximum supported CPUID level, -1=no CPUID */
 	__u32	x86_capability[NCAPINTS];
 	char	x86_vendor_id[16];
 	char	x86_model_id[64];
 	int 	x86_cache_size;  /* in KB - valid for CPUS which support this
 				    call  */
-	int	fdiv_bug;
-	int	f00f_bug;
-	int	coma_bug;
 	unsigned long loops_per_jiffy;
 } ____cacheline_aligned;
 
@@ -323,7 +314,7 @@ struct thread_struct {
 /* IO permissions. the bitmap could be moved into the GDT, that would make
    switch faster for a limited number of ioperm using tasks. -AK */
 	int		ioperm;
-	u32	io_bitmap[IO_BITMAP_SIZE+1];
+	u32	*io_bitmap_ptr;
 };
 
 #define INIT_THREAD  {				\

include/asm-x86_64/spinlock.h

@@ -15,7 +15,7 @@ extern int printk(const char * fmt, ...)
 
 typedef struct {
 	volatile unsigned int lock;
-#ifdef CONFIG_DEBUG_SPINLOCK
+#if SPINLOCK_DEBUG
 	unsigned magic;
 #endif
 } spinlock_t;
@@ -39,7 +39,7 @@ typedef struct {
  * We make no fairness assumptions. They have a cost.
  */
 
-#define spin_is_locked(x)	(*(volatile char *)(&(x)->lock) <= 0)
+#define spin_is_locked(x)	(*(volatile signed char *)(&(x)->lock) <= 0)
 #define spin_unlock_wait(x)	do { barrier(); } while(spin_is_locked(x))
 
 #define spin_lock_string \
@@ -62,7 +62,7 @@ typedef struct {
 
 static inline int _raw_spin_trylock(spinlock_t *lock)
 {
-	char oldval;
+	signed char oldval;
 	__asm__ __volatile__(
 		"xchgb %b0,%1"
 		:"=q" (oldval), "=m" (lock->lock)

include/asm-x86_64/string.h

@@ -40,18 +40,9 @@ extern void *__memcpy(void *to, const void *from, size_t len);
 		 __ret = __builtin_memcpy((dst),(src),__len);	\
 	   __ret; }) 
 
-#if 0
+
 #define __HAVE_ARCH_MEMSET
-extern void *__memset(void *mem, int val, size_t len); 
-#define memset(dst,val,len)					\
-	({ size_t __len = (len);				\
-	   void *__ret;						\
-	   if (__builtin_constant_p(len) && __len >= 64)	\
-		   __ret = __memset((dst),(val),__len);		\
-	   else							\
-		   __ret = __builtin_memset((dst),(val),__len);	\
-	   __ret; }) 
-#endif	   
+#define memset __builtin_memset
 
 #define __HAVE_ARCH_MEMMOVE
 void * memmove(void * dest,const void *src,size_t count);

include/asm-x86_64/suspend.h

+#ifndef SUSPEND_H
+#define SUSPEND_H 1
+
+/* dummy for now */
+
+#endif

include/asm-x86_64/system.h

@@ -13,7 +13,10 @@
 #define LOCK_PREFIX ""
 #endif
 
-#define prepare_to_switch() do {} while(0)
+#define prepare_arch_schedule(prev)            do { } while(0)
+#define finish_arch_schedule(prev)             do { } while(0)
+#define prepare_arch_switch(rq)                        do { } while(0)
+#define finish_arch_switch(rq)                 spin_unlock_irq(&(rq)->lock)
 
 #define __STR(x) #x
 #define STR(x) __STR(x)
@@ -41,7 +44,7 @@
 	__POP(rax) __POP(r15) __POP(r14) __POP(r13) __POP(r12) __POP(r11) __POP(r10) \
 	__POP(r9) __POP(r8)
 
-#define switch_to(prev,next) \
+#define switch_to(prev,next,last) \
 	asm volatile(SAVE_CONTEXT						    \
 		     "movq %%rsp,%[prevrsp]\n\t"				    \
 		     "movq %[nextrsp],%%rsp\n\t"				    \

include/asm-x86_64/timex.h

@@ -48,6 +48,4 @@ static inline cycles_t get_cycles (void)
 
 extern unsigned int cpu_khz;
 
-#define ARCH_HAS_JIFFIES_64
-
 #endif

include/asm-x86_64/tlbflush.h

@@ -106,15 +106,6 @@ static inline void flush_tlb_range(struct vm_area_struct * vma, unsigned long st
 #define TLBSTATE_OK	1
 #define TLBSTATE_LAZY	2
 
-struct tlb_state
-{
-	struct mm_struct *active_mm;
-	int state;
-	char __cacheline_padding[24];
-};
-extern struct tlb_state cpu_tlbstate[NR_CPUS];
-
-
 #endif
 
 #define flush_tlb_kernel_range(start, end) flush_tlb_all()