- 27 May, 2008 13 commits
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Isaku Yamahata authored
paravirtualize ia64_swtich_to, ia64_leave_syscall and ia64_leave_kernel. They include sensitive or performance critical privileged instructions so that they need paravirtualization. To paravirtualize them by single source and multi compile they are converted into indirect jump. And define each pv instances. Cc: Keith Owens <kaos@ocs.com.au> Cc: "Dong, Eddie" <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
paravirtualize ivt.S which implements fault handler in hand written assembly code. They includes sensitive or performance critical privileged instructions. So they need paravirtualization. Cc: Keith Owens <kaos@ocs.com.au> Cc: tgingold@free.fr Cc: Akio Takebe <takebe_akio@jp.fujitsu.com> Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
paravirtualize minstate.h which are hand written assembly code. They include sensitive or performance critical privileged instructions. So that they are appropriate for paravirtualization. Cc: Keith Owens <kaos@ocs.com.au> Cc: Akio Takebe <takebe_akio@jp.fujitsu.com> Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
pv_cpu_asm_ops: define paravirtualized introduce for native execution environment. Cc: Keith Owens <kaos@ocs.com.au> Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
Preparation for paravirtualization of hand written assembly code. They are paravirtualized by single source code and compiled multi times. To tell those files for target (including native), add one defines. Cc: "Dong, Eddie" <eddie.dong@intel.com> Cc: Keith Owens <kaos@ocs.com.au> Cc: tgingold@free.fr Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
introduce pv_cpu_ops to paravirtualize privleged instructions which are defined by ia64 intrinsics. make them indirect C function calls by introducing function tables, pv_cpu_ops. Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
This patch adds a setup hook in the very early boot sequence before start_kernel() to initialize paravirtualization stuff. The hook will be set by each pv loader code or by using multi entry point. Signed-off-by: Qing He <qing.he@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
introduce pv_info which describes some randome info about underlying execution environment. Cc: Jes Sorensen <jes@sgi.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
__local_irq_save() and local_save_flags() are used to mask interruptions. They read all psr bits that requres whole bit emulation. On the other hand, reading only psr.i, the single bit, can be virtualized cheaply. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
[IA64] pvops: preparation: introduce ia64_set_rr0_to_rr4() to make kernel paravirtualization friendly. make kernel paravirtualization friendly by introducing ia64_set_rr0_to_rr4(). ia64/Xen will replace setting rr[0-4] with single hypercall later. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
Move the LOAD_OFFSET definition from vmlinux.lds.S into system.h. On paravirtualized environments, it is necessary to detect the execution environment. One of the solutions is the multi entry point. The multi entry point allows a boot loader to start the kernel execution from the entry point which is different from the ELF entry point. The non standard entry point will defined as the specialized elf note which contains the LMA of the entry point symbol. The constant, LOAD_OFFSET, is necessary to calculate the symbol's LMA. Move the definition into the public header file to make it available to the multi entry point support. Cc: "He, Qing" <qing.he@intel.com> Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Isaku Yamahata authored
remove extern declaration of handle_IPI() in irq_ia64.c. Instead, declare it in asm-ia64/smp.h. Later handle_IPI() will be referenced from another file. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
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Tony Luck authored
Problem: An application violating the architectural rules regarding operation dependencies and having specific Register Stack Engine (RSE) state at the time of the violation, may result in an illegal operation fault and invalid RSE state. Such faults may initiate a cascade of repeated illegal operation faults within OS interruption handlers. The specific behavior is OS dependent. Implication: An application causing an illegal operation fault with specific RSE state may result in a series of illegal operation faults and an eventual OS stack overflow condition. Workaround: OS interruption handlers that switch to kernel backing store implement a check for invalid RSE state to avoid the series of illegal operation faults. The core of the workaround is the RSE_WORKAROUND code sequence inserted into each invocation of the SAVE_MIN_WITH_COVER and SAVE_MIN_WITH_COVER_R19 macros. This sequence includes hard-coded constants that depend on the number of stacked physical registers being 96. The rest of this patch consists of code to disable this workaround should this not be the case (with the presumption that if a future Itanium processor increases the number of registers, it would also remove the need for this patch). Move the start of the RBS up to a mod32 boundary to avoid some corner cases. The dispatch_illegal_op_fault code outgrew the spot it was squatting in when built with this patch and CONFIG_VIRT_CPU_ACCOUNTING=y Move it out to the end of the ivt. Signed-off-by: Tony Luck <tony.luck@intel.com>
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- 26 May, 2008 12 commits
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Linus Torvalds authored
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Oleg Nesterov authored
Based on Roland's patch. This approach was suggested by Austin Clements from the very beginning, and then by Linus. As Austin pointed out, the execing task can be killed by SI_TIMER signal because exec flushes the signal handlers, but doesn't discard the pending signals generated by posix timers. Perhaps not a bug, but people find this surprising. See http://bugzilla.kernel.org/show_bug.cgi?id=10460Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Austin Clements <amdragon+kernelbugzilla@mit.edu> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Oleg Nesterov authored
Currently sigqueue_free() removes sigqueue from list, but doesn't cancel the pending signal. This is not consistent, the task should either receive the "full" signal along with siginfo_t, or it shouldn't receive the signal at all. Change sigqueue_free() to clear SIGQUEUE_PREALLOC but leave sigqueue on list if it is queued. This is a user-visible change. If the signal is blocked, it stays queued after sys_timer_delete() until unblocked with the "stale" si_code/si_value, and of course it is still counted wrt RLIMIT_SIGPENDING which also limits the number of posix timers. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: Austin Clements <amdragon+kernelbugzilla@mit.edu> Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://jdelvare.pck.nerim.net/jdelvare-2.6Linus Torvalds authored
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: i2c: Align i2c_device_id tuner: Do not alter i2c_client.name
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git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: slub: ksize() abuse checks slob: Fix to return wrong pointer
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git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.26Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.26: sh: Drop broken URAM support on SH7723. sh: update Migo-R defconfig sh: use sm501 8250 mfd support on r2d boards sh: add probe support for new sh7723 cut sh: fix VPU interrupt vector for sh7723 sh: fix USBF resource for sh7722
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: global_reg_snapshot is not for userspace
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (52 commits) vlan: Use bitmask of feature flags instead of seperate feature bits fmvj18x_cs: add NextCom NC5310 rev B support xirc2ps_cs: re-initialize the multicast address in do_reset 3C509: rx_bytes should not be increased when alloc_skb failed NETFRONT: Use __skb_queue_purge() VIRTIO: Use __skb_queue_purge() phylib: do EXPORT_SYMBOL on get_phy_id netlink: Fix nla_parse_nested_compat() to call nla_parse() directly WAN: protect HDLC proto list while insmod/rmmod drivers/net/fs_enet: remove null pointer dereference S2io: Version update for napi and MSI-X patches S2io: Added napi support when MSIX is enabled. S2io: Move all the transmit completions to a single msi-x (alarm) vector drivers/net/ehea - remove unnecessary memset after kzalloc au1000_eth: remove useless check Blackfin EMAC Driver: Removed duplicated include <linux/ethtool.h> cpmac bugfixes and enhancements e1000e: use resource_size_t, not unsigned long, for phys addrs net/usb: add support for Apple USB Ethernet Adapter uli526x: add support for netpoll ...
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Jiri Slaby authored
Align i2c_device_id.driver_data to 8 bytes to not fail on crossbuilds. (Added in d2653e92.) Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Michael Krufky authored
The tuner driver used to change i2c_client.name for its own needs, but it really shouldn't, as this field is used by i2c-core to do the device/driver matching. So, create and use a separate field for the tuner driver needs. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Adrian Bunk authored
global_reg_snapshot shouldn't be visible in our userspace headers. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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Paul Mundt authored
This was copied over from the previous MobileR bits, which doesn't apply to R2. The URAM block on R2 is recycled for the L2 instead. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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- 25 May, 2008 15 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: Kconfig: introduce ARCH_DEFCONFIG to DEFCONFIG_LIST .gitignore: match ncscope.out scripts/ver_linux use 'gcc -dumpversion'
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git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] Add ICH9DO into the iTCO_wdt.c driver [WATCHDOG] Fix booke_wdt.c on MPC85xx SMP system's [WATCHDOG] Add a watchdog driver based on the CS5535/CS5536 MFGPT timers [WATCHDOG] hpwdt: Fix NMI handling. [WATCHDOG] Blackfin Watchdog Driver: split platform device/driver [WATCHDOG] Add w83697h_wdt early_disable option [WATCHDOG] Make w83697h_wdt timeout option string similar to others [WATCHDOG] Make w83697h_wdt void-like functions void
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: [ALSA] hda - Fix capture mute Widget for stac9250/9251 [ALSA] snd-pcsp - fix pcsp_treble_info() to honour an item number [ALSA] hda - Added support for Foxconn P35AX-S mainboard [ALSA] hda - Fix COEF and EAPD in ALC889 auto-configuration mode [ALSA] hda - Fix noise on VT1708 codec [ALSA] hda - Add model for ASUS P5K-E/WIFI-AP
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Sam Ravnborg authored
init/Kconfig contains a list of configs that are searched for if 'make *config' are used with no .config present. Extend this list to look at the config identified by ARCH_DEFCONFIG. With this change we now try the defconfig targets last. This fixes a regression reported by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com>
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Jike Song authored
Sometimes I got this: $ git-status {snip} # On branch master # Untracked files: # (use "git add <file>..." to include in what will be committed) # # ncscope.out nothing added to commit but untracked files present (use "git add" to track) Fix it. Signed-off-by: Jike Song <albcamus@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Gabriel C authored
These magic greps and hacks in ver_linux to get the gcc version always break after some gcc releases. Since now gcc >4.3 allows compiling with '--with-pkgversion' ( which can be everything 'My Cool Gcc' or something ) ver_linux will report random junk for these. Simply use 'gcc -dumpversion' to get the gcc version which should always work. Signed-off-by: Gabriel C <nix.or.die@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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Mauro Carvalho Chehab authored
Fix capture mute widget for STAC9250/9251 codecs. The widget 0x09 has no mute but 0x14 does actually. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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Stas Sergeev authored
This solves the problem with mixers wrongly displaying the PWM freq. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Gabriel C authored
Add the Intel ICH9DO controller ID's for the iTCO_wdt kernel driver and bump the driver version. Tested on an P5E-VM DO ASUS motherboard. Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Chen Gong authored
On Book-E SMP systems each core has its own private watchdog. If only one watchdog is enabled, when the core that doesn't enable the watchdog is hung, system can't reset because no watchdog is running on it. That's bad. It means we must enable watchdogs on both cores. We can use smp_call_function() to send appropriate messages to all the other cores to enable and update the watchdog. Signed-off-by: Chen Gong <g.chen@freescale.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Jordan Crouse authored
Add a watchdog timer based on the MFGPT timers in the CS5535/CS5536 companion chips to the AMD Geode GX and LX processors. Only caveat is that the BIOS must provide at least a one free timer, and most do not. Signed-off-by: Jordan Crouse <jordan.crouse@amd.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Mingarelli, Thomas authored
I need to just return in case it's not my NMI so someone else can take a look at it (and reset die_nmi_called to 0 in case I actually do get one that's mine to handle). Signed-off-by: Thomas Mingarelli <thomas.mingarelli@hp.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Mike Frysinger authored
- split platform device/driver registering from actual watchdog device/driver registering so that we can cleanly load/unload - fixup __initdata with __initconst and __devinitdata with __devinitconst Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Samuel Tardieu authored
Pádraig Brady requested the possibility of not disabling the watchdog at module load time or kernel boot time if it had been previously enabled in the bios. It may help rebooting the machine if it freezes before the userland daemon kicks in. Signed-off-by: Samuel Tardieu <sam@rfc1149.net> Cc: Pádraig Brady <P@draigBrady.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Samuel Tardieu authored
Signed-off-by: Samuel Tardieu <sam@rfc1149.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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