- 07 Nov, 2005 40 commits
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Martin Schwidefsky authored
Remove pagex pseudo page fault code. It does not work together with the system call speedup that makes the complete system call path enabled for interrupts. To make pagex and the syscall speedup code work together we would have to add code to the program check handler to do a critical section cleanup like the asynchronous interrupt code. This would make program checks slower. Not what we want. Newer versions of z/VM have the improved pfault pseudo page fault interface. This replaces the old pagex interface and does not have the problem. So its better to just rip out the pagex code. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Cornelia Huck authored
Make the interface for setting ccw group devices on-/offline consistent with that for ccw devices: Check if the device driver provided a set_{on,off}line function and just set the device on-/offline if not. Signed-off-by:Cornelia Huck <cohuck@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Don't switch back to 24 bit addressing mode when waiting for an external interrupt and set the correct bit in wait PSW (external mask instead of I/O mask). Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Cornelia Huck authored
Fix typos and add a section about cpus in the driver-model documentation. Signed-off-by:
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Martin Schwidefsky authored
The calculation of the value return by next_timer_interrupt from jiffies to jiffies_64 is racy against xtime updates. We need to protect the calculation with read_seqbegin/read_seqretry. Signed-off-by:
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Heiko Carstens authored
Always create all signal frames for pending signals before returning to userspace, not just a single one. Signed-off-by:
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Arthur Othieno authored
No one may sleep on us until we've been down()'d. So on allocation, initialize `sleepers' to 0, just like everyone else does. Signed-off-by:
Arthur Othieno <a.othieno@bluewin.ch> Acked-by:
Christian Zankel <chris@zankel.net> Signed-off-by:
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Adrian Bunk authored
"extern inline" doesn't make much sense. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Cc: Miles Bader <miles@gnu.org> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
This patch reverts back the changes to HOSTCFLAGS and HOSTLDFLAGS When we were building complete binaries to get constants (such as ptrace register layout on stack) from host userspace headers, we needed to make the arch for building HOST binaries match our one: i.e. on a 64bit system compiling 32bit binaries, we compile 32-bit hostprogs and need, say, 32-bit ncurses. Now we can revert that - that avoids problem with, say, menuconfig and ncurses, on a system which can't compile well 32-bit programs. Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Remove usage of hardcoded constants in paging_init(). By chance I spotted a bug in zones_setup involving a change to ZONE_* constants, due to the ZONE_DMA32 patch from Andi Kleen (which is in -mm). So, possibly, instead of zones_size[2] you will find zones_size[3] in the code, but that change is wrong and this patch is still correct. Signed-off-by:
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Jeff Dike authored
This makes some of the tt-specific options actually depend on CONFIG_MODE_TT. Signed-off-by:
Jeff Dike <jdike@addtoit.com> Cc: Paolo Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Jeff Dike authored
A number of fixes to improve behavior when large physical memory sizes are specified: - libc files need -D_FILE_OFFSET_BITS=64 because there are unavoidable uses of non-64 interfaces in libc - some %d need to be %u Signed-off-by:
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Bodo Stroesser authored
Patch imlements full LDT handling in SKAS: * UML holds it's own LDT table, used to deliver data on modify_ldt(READ) * UML disables the default_ldt, inherited from the host (SKAS3) or resets LDT entries, set by host's clib and inherited in SKAS0 * A new global variable skas_needs_stub is inserted, that can be used to decide, whether stub-pages must be supported or not. * Uses the syscall-stub to replace missing PTRACE_LDT (therefore, write_ldt_entry needs to be modified) Signed-off-by:
Bodo Stroesser <bstroesser@fujitsu-siemens.com> Signed-off-by:
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Ben Lahaise authored
Not quite, something along the lines of the patch below works correctly (and makes aio performance not suffer from multiple second delays), as skas0 mode correctly switches mm contexts, unlike TT (which should probably get nuked from the kernel now that skas0 seems to be working). Signed-off-by:
Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by:
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Jeff Dike authored
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from helper.c file under os-Linux dir Signed-off-by:
Gennady Sharapov <Gennady.V.Sharapov@intel.com> Signed-off-by:
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Jeff Dike authored
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from main.c file under os-Linux dir and joins mem.c and um_arch.c files. Signed-off-by:
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Gennady Sharapov authored
The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from uaccess_user.c file under os-Linux dir Signed-off-by:
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Bodo Stroesser authored
ifa->ifa_address and ifa->ifa_mask are defined as __u32, but used as if they were char[4]. Network code uses htons() to convert it. So UML's method to access these fields is wrong for bigendians (e.g. s390) I replaced bytewise copying by memcpy(), maybe even that might be removed, if ifa->ifa_address/mask may be used immediately. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Jeff Dike noted that the assembly code for syscall stubs is misassembled with GCC 3.2.3: the values copied in registers weren't preserved between one asm() and the following one. So I fixed the thing by rewriting the __asm__ constraints more like unistd.h ones. Note: in syscall6 case I had to add one more instruction (i.e. moving arg6 in eax and shuffling things around) - it's needed for the function to be valid in general (we can't load the value from the stack, relative to ebp, because we change it), but could be avoided since we actually use a constant as param 6. The only fix would be to turn stub_syscall6 to a macro and use a "i" constraint for arg6 (i.e., specify it's a constant value). Signed-off-by:
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Jeff Dike authored
Add some more debugging information when a stub does something unexpected, usually segfaulting. Now, it dumps out the stub's registers as well as the signal. Signed-off-by:
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Adrian Bunk authored
"extern inline" doesn't make much sense. Signed-off-by:
Mikael Starvik <starvik@axis.com> Signed-off-by:
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Arthur Othieno authored
printk() already declared in include/linux/kernel.h so squish the duplication. Besides, no printk() usage here. Bye bye. Signed-off-by:
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Shaohua Li authored
It's widely seen a MCE non-fatal error reported after resume. It seems MCE resume is lacked under ia32. This patch tries to fix the gap. Signed-off-by:
Shaohua Li <shaohua.li@intel.com> Acked-by:
Pavel Machek <pavel@ucw.cz> Signed-off-by:
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Pavel Machek authored
Remove unused variable, and make code less evil that way. Fix whitespace around for-loop-like macro. Signed-off-by:
Pavel Machek <pavel@suse.cz> Signed-off-by:
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Pavel Machek authored
This cleans spaces between * and pointer up, and adds "int" in "unsigned int". Signed-off-by:
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Pavel Machek authored
This adds few more working systems. Signed-off-by:
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Heiko Carstens authored
Replace smp_processor_id() with any_online_cpu(cpu_online_map) in order to avoid lots of "BUG: using smp_processor_id() in preemptible [00000001] code:..." messages in case taking a cpu online fails. All the traces start at the last notifier_call_chain(...) in kernel/cpu.c. Since we hold the cpu_control semaphore it shouldn't be any problem to access cpu_online_map. The reason why cpu_up failed is simply that the cpu that was supposed to be taken online wasn't even there. That is because on s390 we never know when a new cpu comes and therefore cpu_possible_map consists of only ones and doesn't reflect reality. Signed-off-by:
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Adrian Bunk authored
Every file should #include the header files containing the prototypes of its global functions Signed-off-by:
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Adrian Bunk authored
Every file should #include the header files containing the prototypes of its global functions Signed-off-by:
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Adrian Bunk authored
Every file should #include the header files containing the prototypes of its global functions Signed-off-by:
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Zwane Mwaikambo authored
Excerpt from bugzilla entry http://bugzilla.kernel.org/show_bug.cgi?id=5518 "i386 version of Reboot-through-BIOS is unsafe: it forgets to mask APIC LVT interrupts before jumping to a BIOS entry point. As a result, BIOS ends up bombarded with interrupts early on boot. The BIOS does not expect it since following a "normal" hardware cpu reset, all APIC LVT registers have the Mask bit (16) set and can't generate interrupts. For example, the version of Phoenix BIOS used by VMware enables interrupts for the first time before masking/clearing APIC LVT. The APIC Timer LVT register is still set up for a timer interrupt delivery with a high vector from the previous Linux incarnation (0xef in our case). The BIOS has not fully initialized its IDT at this point and the real mode gate for 0xef remains all zeros. Vector 0xef dispatches BIOS to address 0:0, BIOS takes a #GP and eventually hangs. machine_shutdown() does attempt to shut down APIC before jumping to BIOS, but it is ineffective" Signed-off-by:
Zwane Mwaikambo <zwane@arm.linux.org.uk> Cc: "Seth, Rohit" <rohit.seth@intel.com> Cc: Zachary Amsden <zach@vmware.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:
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Tobias Klauser authored
Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) Signed-off-by:
Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by:
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Paul Mundt authored
SH7705 in extended cache mode has some left-over VALID_PAGE() cruft that it checks when doing lazy dcache write-back. This has been gone for some time (the last bits were in the discontig code, which should now also be gone -- this also fixes up a build error in the non-discontig case). pfn_valid() gives the desired behaviour, so we switch to that. Signed-off-by:
Paul Mundt <lethal@linux-sh.org> Signed-off-by:
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Paul Mundt authored
There was only one board using this (hp690 specifically), and it just so happens that it's only physically discontiguous at the "normal" P1 offset. If we bump up the P1 offset, it's possible to hit a shadowed region of memory where we suddenly become magically contiguous. As people have been using this shadowed region workaround for quite some time (and without any adverse effects), it's time to drop the left over discontig bits that no longer have any practical use (it was always very much hp690-centric to begin with). Signed-off-by:
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Paul Mundt authored
Presently it is bogus to call pte_mkhuge() outside of the CONFIG_HUGETLB_PAGE context, as the only processors that support _PAGE_SZHUGE do so in the hugetlbpage context only (and this is the only time that _PAGE_SZHUGE is even defined). SH-2 and SH-3 do not support huge pages at all, and so it is not possible to enable this. Signed-off-by:
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Paul Mundt authored
This adds support for the relatively quirky (ie, not in line with any known documentation, and amazed it works at all) SuperHyway implementation on SH4-202. This depends on the earlier SuperHyway patch for multiple block support and VCR refactoring. Signed-off-by:
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Paul Mundt authored
This extends the API somewhat to allow for platform-specific VCR reading and writing. Some platforms (like SH4-202) implement the VCR in a split VCRL and VCRH, but end up being in reverse order or have other quirks that need to be dealt with, so we add a set of superhyway_ops per-bus to accomodate this. We also have to extend the per-device resources somewhat, as some devices now conveniently split control and data blocks. So we allow a platform to register its set of SuperHyway devices via superhyway_add_devices() with the control block always ordered as the first resource (as this is the one that userspace cares about). Signed-off-by:
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Paul Mundt authored
sh had its own support for embedding ramdisk images in to the kernel binary, but people are using initramfs for this now, so we drop the ramdisk embedding. Signed-off-by:
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Paul Mundt authored
drivers/sh/ got dropped from drivers/Makefile, so add it back in.. Signed-off-by:
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Pantelis Antoniou authored
Kconfig patch needed by fs_enet to work. Works like CONFIG_CPM2. Cc: Kumar <kumar.gala@freescale.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Signed-off-by:
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