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* Merge branch 'timers-for-linus-hpet' of ↵Linus Torvalds2009-12-098-43/+199
|\ | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus-hpet' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: hpet: Make WARN_ON understandable x86: arch specific support for remapping HPET MSIs intr-remap: generic support for remapping HPET MSIs x86, hpet: Simplify the HPET code x86, hpet: Disable per-cpu hpet timer if ARAT is supported
| * x86: hpet: Make WARN_ON understandableThomas Gleixner2009-11-271-4/+15
| | | | | | | | | | | | | | | | | | | | | | | | Andrew complained rightly that the WARN_ON in hpet_next_event() is confusing and the code comment not really helpful. Change it to WARN_ONCE and print the reason in clear text. Change the comment to explain what kind of hardware wreckage we deal with. Pointed-out-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Venki Pallipadi <venkatesh.pallipadi@intel.com>
| * x86: arch specific support for remapping HPET MSIsSuresh Siddha2009-08-274-11/+47
| | | | | | | | | | | | | | | | | | | | | | | | | | x86 arch support for remapping HPET MSI's by associating the HPET timer block with the interrupt-remapping HW unit and setting up appropriate irq_chip Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Jay Fenlason <fenlason@redhat.com> LKML-Reference: <20090804190729.630510000@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * intr-remap: generic support for remapping HPET MSIsSuresh Siddha2009-08-274-4/+104
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Generic support for remapping HPET MSI's by parsing the HPET timer block device scope in the ACPI DRHD tables. This is needed for platforms supporting interrupt-remapping and MSI capable HPET timer block. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Jay Fenlason <fenlason@redhat.com> LKML-Reference: <20090804190729.477649000@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * x86, hpet: Simplify the HPET codeJan Beulich2009-08-212-23/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On 64-bits, using unsigned long when unsigned int suffices needlessly creates larger code (due to the need for REX prefixes), and most of the logic in hpet.c really doesn't need 64-bit operations. At once this avoids the need for a couple of type casts. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Shaohua Li <shaohua.li@intel.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> LKML-Reference: <4A8BC9780200007800010832@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * x86, hpet: Disable per-cpu hpet timer if ARAT is supportedShaohua Li2009-08-121-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | If CPU support always running local APIC timer, per-cpu hpet timer could be disabled, which is useless and wasteful in such case. Let's leave the timers to others. The effect is that we reserve less timers. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Cc: venkatesh.pallipadi@intel.com LKML-Reference: <20090812031612.GA10062@sli10-desk.sh.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds2009-12-0921-911/+1033
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: hwrng: core - Prevent too-small buffer sizes hwrng: virtio-rng - Convert to new API hwrng: core - Replace u32 in driver API with byte array crypto: ansi_cprng - Move FIPS functions under CONFIG_CRYPTO_FIPS crypto: testmgr - Add ghash algorithm test before provide to users crypto: ghash-clmulni-intel - Put proper .data section in place crypto: ghash-clmulni-intel - Use gas macro for PCLMULQDQ-NI and PSHUFB crypto: aesni-intel - Use gas macro for AES-NI instructions x86: Generate .byte code for some new instructions via gas macro crypto: ghash-intel - Fix irq_fpu_usable usage crypto: ghash-intel - Add PSHUFB macros crypto: ghash-intel - Hard-code pshufb crypto: ghash-intel - Fix building failure on x86_32 crypto: testmgr - Fix warning crypto: ansi_cprng - Fix test in get_prng_bytes crypto: hash - Remove cra_u.{digest,hash} crypto: api - Remove digest case from procfs show handler crypto: hash - Remove legacy hash/digest code crypto: ansi_cprng - Add FIPS wrapper crypto: ghash - Add PCLMULQDQ accelerated implementation
| * | hwrng: core - Prevent too-small buffer sizesIan Molton2009-12-031-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | This patch prevents the hw_random core using too small of a buffer on machines with small cacheline sizes. Signed-off-by: Ian Molton <ian.molton@collabora.co.uk> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | hwrng: virtio-rng - Convert to new APIIan Molton2009-12-011-51/+27Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts virtio-rng to the new hw_rng API. In the process it fixes a previously untriggered buffering bug where the buffer is not drained correctly if it has a non-multiple-of-4 length. Performance has improved under qemu-kvm testing also. Signed-off-by: Ian Molton <ian.molton@collabora.co.uk> Acked-by: Matt Mackall <mpm@selenic.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6Herbert Xu2009-12-015250-144024/+371385
| |\ \
| * | | hwrng: core - Replace u32 in driver API with byte arrayIan Molton2009-12-012-45/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements a new method by which hw_random hardware drivers can pass data to the core more efficiently, using a shared buffer. The old methods have been retained as a compatability layer until all the drivers have been updated. Signed-off-by: Ian Molton <ian.molton@collabora.co.uk> Acked-by: Matt Mackall <mpm@selenic.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: ansi_cprng - Move FIPS functions under CONFIG_CRYPTO_FIPSJaswinder Singh Rajput2009-11-231-28/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fips_cprng_get_random and fips_cprng_reset is used only by CONFIG_CRYPTO_FIPS. This also fixes compilation warnings: crypto/ansi_cprng.c:360: warning: ‘fips_cprng_get_random’ defined but not used crypto/ansi_cprng.c:393: warning: ‘fips_cprng_reset’ defined but not used Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: testmgr - Add ghash algorithm test before provide to usersYouquan, Song2009-11-232-0/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add ghash algorithm test before provide it to users Signed-off-by: Youquan, Song <youquan.song@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: ghash-clmulni-intel - Put proper .data section in placeJiri Kosina2009-11-231-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Lbswap_mask, Lpoly and Ltwo_one should clearly belong to .data section, not .text. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: ghash-clmulni-intel - Use gas macro for PCLMULQDQ-NI and PSHUFBHuang Ying2009-11-231-19/+10Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Old binutils do not support PCLMULQDQ-NI and PSHUFB, to make kernel can be compiled by them, .byte code is used instead of assembly instructions. But the readability and flexibility of raw .byte code is not good. So corresponding assembly instruction like gas macro is used instead. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: aesni-intel - Use gas macro for AES-NI instructionsHuang Ying2009-11-231-344/+173Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Old binutils do not support AES-NI instructions, to make kernel can be compiled by them, .byte code is used instead of AES-NI assembly instructions. But the readability and flexibility of raw .byte code is not good. So corresponding assembly instruction like gas macro is used instead. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | x86: Generate .byte code for some new instructions via gas macroHuang Ying2009-11-091-0/+150
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It will take some time for binutils (gas) to support some newly added instructions, such as SSE4.1 instructions or the AES-NI instructions found in upcoming Intel CPU. To make the source code can be compiled by old binutils, .byte code is used instead of the assembly instruction. But the readability and flexibility of raw .byte code is not good. This patch solves the issue of raw .byte code via generating it via assembly instruction like gas macro. The syntax is as close as possible to real assembly instruction. Some helper macros such as MODRM is not a full feature implementation. It can be extended when necessary. Signed-off-by: Huang Ying <ying.huang@intel.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: ghash-intel - Fix irq_fpu_usable usageHuang Ying2009-11-031-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When renaming kernel_fpu_using to irq_fpu_usable, the semantics of the function is changed too, from mesuring whether kernel is using FPU, that is, the FPU is NOT available, to measuring whether FPU is usable, that is, the FPU is available. But the usage of irq_fpu_usable in ghash-clmulni-intel_glue.c is not changed accordingly. This patch fixes this. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: ghash-intel - Add PSHUFB macrosHerbert Xu2009-11-032-5/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add PSHUFB macros instead of repeating byte sequences, suggested by Ingo. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Ingo Molnar <mingo@elte.hu>
| * | | crypto: ghash-intel - Hard-code pshufbHerbert Xu2009-11-011-6/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Old gases don't have a clue what pshufb stands for so we have to hard-code it for now. Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: ghash-intel - Fix building failure on x86_32Huang Ying2009-10-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CLMUL-NI accelerated GHASH should be turned off on non-x86_64 machine. Reported-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: testmgr - Fix warningFelipe Contreras2009-10-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | crypto/testmgr.c: In function ‘test_cprng’: crypto/testmgr.c:1204: warning: ‘err’ may be used uninitialized in this function Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: ansi_cprng - Fix test in get_prng_bytesRoel Kluin2009-10-271-3/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | size_t nbytes cannot be less than 0 and the test was redundant. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: hash - Remove cra_u.{digest,hash}Benjamin Gilbert2009-10-191-27/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove unused digest_alg and hash_alg structs from crypto_alg union and kill their definitions. This also ensures that old-style digest/hash algorithms maintained out of tree will break at build time rather than oopsing at runtime. Signed-off-by: Benjamin Gilbert <bgilbert@cs.cmu.edu> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: api - Remove digest case from procfs show handlerBenjamin Gilbert2009-10-191-7/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove special handling of old-style digest algorithms from the procfs show handler. Signed-off-by: Benjamin Gilbert <bgilbert@cs.cmu.edu> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: hash - Remove legacy hash/digest codeBenjamin Gilbert2009-10-193-424/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 6941c3a0 disabled compilation of the legacy digest code but didn't actually remove it. Rectify this. Also, remove the crypto_hash_type extern declaration from algapi.h now that the struct is gone. Signed-off-by: Benjamin Gilbert <bgilbert@cs.cmu.edu> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: ansi_cprng - Add FIPS wrapperNeil Horman2009-10-191-9/+70
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch to add fips(ansi_cprng) alg, which is ansi_cprng plus a continuous test Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| * | | crypto: ghash - Add PCLMULQDQ accelerated implementationHuang Ying2009-10-197-0/+510
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PCLMULQDQ is used to accelerate the most time-consuming part of GHASH, carry-less multiplication. More information about PCLMULQDQ can be found at: http://software.intel.com/en-us/articles/carry-less-multiplication-and-its-usage-for-computing-the-gcm-mode/ Because PCLMULQDQ changes XMM state, its usage must be enclosed with kernel_fpu_begin/end, which can be used only in process context, the acceleration is implemented as crypto_ahash. That is, request in soft IRQ context will be defered to the cryptd kernel thread. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds2009-12-092-45/+112
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] iTCO_wdt.c - cleanup chipset documentation [WATCHDOG] iTCO_wdt: Add support for Intel Ibex Peak [WATCHDOG] CPUFREQ: S3C24XX Watchdog frequency scaling support.
| * | | | [WATCHDOG] iTCO_wdt.c - cleanup chipset documentationWim Van Sebroeck2009-12-041-44/+17Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cleanup the documentation about the supported chipsets. Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | [WATCHDOG] iTCO_wdt: Add support for Intel Ibex PeakSeth Heasley2009-12-041-1/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the Intel Ibex Peak (PCH) Device IDs to iTCO_wdt.c. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | | | [WATCHDOG] CPUFREQ: S3C24XX Watchdog frequency scaling support.Ben Dooks2009-12-041-3/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for CPU frequency scaling to the S3C24XX Watchdog driver. Signed-off-by: Simtec Linux Team <linux@simtec.co.uk> Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* | | | | Merge branch 'x86-xen-for-linus' of ↵Linus Torvalds2009-12-082-2/+2
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: cpumask: Use modern cpumask style in Xen
| * | | | | cpumask: Use modern cpumask style in XenRusty Russell2009-11-042-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Jeremy Fitzhardinge <jeremy@xensource.com> LKML-Reference: <200911031458.38406.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | | Merge branch 'x86-uv-for-linus' of ↵Linus Torvalds2009-12-089-51/+69
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: UV RTC: Always enable RTC clocksource x86: UV RTC: Rename generic_interrupt to x86_platform_ipi x86: UV RTC: Clean up error handling x86: UV RTC: Add clocksource only boot option x86: UV RTC: Fix early expiry handling
| * | | | | | x86: UV RTC: Always enable RTC clocksourceDimitri Sivanich2009-11-231-11/+6Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Always enable the RTC clocksource on UV systems. Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> LKML-Reference: <20091120214826.GA20016@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | x86: UV RTC: Rename generic_interrupt to x86_platform_ipiDimitri Sivanich2009-10-149-25/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> LKML-Reference: <20091014142257.GE11048@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | x86: UV RTC: Clean up error handlingDimitri Sivanich2009-10-141-8/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cleanup error handling in uv_rtc_setup_clock. Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> LKML-Reference: <20091014142103.GD11048@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | x86: UV RTC: Add clocksource only boot optionDimitri Sivanich2009-10-141-5/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add clocksource only boot option for UV RTC. Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> LKML-Reference: <20091014141848.GC11048@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | x86: UV RTC: Fix early expiry handlingDimitri Sivanich2009-10-141-12/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tune/fix early timer expiry handling and return correct early timeout value for set_next_event. Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> LKML-Reference: <20091014141630.GB11048@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | | | Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2009-12-085-5/+24
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, mce: don't restart timer if disabled x86: Use -maccumulate-outgoing-args for sane mcount prologues x86: Prevent GCC 4.4.x (pentium-mmx et al) function prologue wreckage x86: AMD Northbridge: Verify NB's node is online x86 VSDO: Fix Kconfig help x86: Fix typo in Intel CPU cache size descriptor x86: Add new Intel CPU cache size descriptors
| * | | | | | | x86, mce: don't restart timer if disabledHidetoshi Seto2009-12-031-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Even it is in error path unlikely taken, add_timer_on() at CPU_DOWN_FAILED* needs to be skipped if mce_timer is disabled. Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Huang Ying <ying.huang@intel.com> Cc: Jan Beulich <jbeulich@novell.com> Cc: <stable@kernel.org> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * | | | | | | x86: Use -maccumulate-outgoing-args for sane mcount prologuesThomas Gleixner2009-11-281-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 746357d (x86: Prevent GCC 4.4.x (pentium-mmx et al) function prologue wreckage) uses -mtune=generic to work around the function prologue problem with mcount on -march=pentium-mmx and others. Jakub pointed out that we can use -maccumulate-outgoing-args instead which is selected by -mtune=generic and prevents the problem without losing the -march specific optimizations. Pointed-out-by: Jakub Jelinek <jakub@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: stable@kernel.org
| * | | | | | | x86: Prevent GCC 4.4.x (pentium-mmx et al) function prologue wreckageThomas Gleixner2009-11-201-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the kernel is compiled with -pg for tracing GCC 4.4.x inserts stack alignment of a function _before_ the mcount prologue if the -march=pentium-mmx is set and -mtune=generic is not set. This breaks the assumption of the function graph tracer which expects that the mcount prologue push %ebp mov %esp, %ebp is the first stack operation in a function because it needs to modify the function return address on the stack to trap into the tracer before returning to the real caller. The generated code is: push %edi lea 0x8(%esp),%edi and $0xfffffff0,%esp pushl -0x4(%edi) push %ebp mov %esp,%ebp so the tracer modifies the copy of the return address which is stored after the stack alignment and therefor does not trap the return which in turn breaks the call chain logic of the tracer and leads to a kernel panic. Aside of the fact that the generated code is horrible for no good reason other -march -mtune options generate the expected: push %ebp mov %esp,%ebp and $0xfffffff0,%esp which does the same and keeps everything intact. After some experimenting we found out that this problem is restricted to gcc4.4.x and to the following -march settings: i586, pentium, pentium-mmx, k6, k6-2, k6-3, winchip-c6, winchip2, c3, geode By adding -mtune=generic the code generator produces always the expected code. So forcing -mtune=generic when CONFIG_FUNCTION_GRAPH_TRACER=y is not pretty, but at the moment the only way to prevent that the kernel trips over gcc-shrooms induced code madness. Most distro kernels have CONFIG_X86_GENERIC=y anyway which forces -mtune=generic as well so it will not impact those. References: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42109 http://lkml.org/lkml/2009/11/19/17 Signed-off-by: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <alpine.LFD.2.00.0911200206570.24119@localhost.localdomain> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com>, Cc: Jeff Law <law@redhat.com> Cc: gcc@gcc.gnu.org Cc: David Daney <ddaney@caviumnetworks.com> Cc: Andrew Haley <aph@redhat.com> Cc: Richard Guenther <richard.guenther@gmail.com> Cc: stable@kernel.org
| * | | | | | | x86: AMD Northbridge: Verify NB's node is onlinePrarit Bhargava2009-11-161-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix panic seen on some IBM and HP systems on 2.6.32-rc6: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffff8120bf3f>] find_next_bit+0x77/0x9c [...] [<ffffffff8120bbde>] cpumask_next_and+0x2e/0x3b [<ffffffff81225c62>] pci_device_probe+0x8e/0xf5 [<ffffffff812b9be6>] ? driver_sysfs_add+0x47/0x6c [<ffffffff812b9da5>] driver_probe_device+0xd9/0x1f9 [<ffffffff812b9f1d>] __driver_attach+0x58/0x7c [<ffffffff812b9ec5>] ? __driver_attach+0x0/0x7c [<ffffffff812b9298>] bus_for_each_dev+0x54/0x89 [<ffffffff812b9b4f>] driver_attach+0x19/0x1b [<ffffffff812b97ae>] bus_add_driver+0xd3/0x23d [<ffffffff812ba1e7>] driver_register+0x98/0x109 [<ffffffff81225ed0>] __pci_register_driver+0x63/0xd3 [<ffffffff81072776>] ? up_read+0x26/0x2a [<ffffffffa0081000>] ? k8temp_init+0x0/0x20 [k8temp] [<ffffffffa008101e>] k8temp_init+0x1e/0x20 [k8temp] [<ffffffff8100a073>] do_one_initcall+0x6d/0x185 [<ffffffff8108d765>] sys_init_module+0xd3/0x236 [<ffffffff81011ac2>] system_call_fastpath+0x16/0x1b I put in a printk and commented out the set_dev_node() call when and got this output: quirk_amd_nb_node: current numa_node = 0x0, would set to val & 7 = 0x0 quirk_amd_nb_node: current numa_node = 0x0, would set to val & 7 = 0x1 quirk_amd_nb_node: current numa_node = 0x0, would set to val & 7 = 0x2 quirk_amd_nb_node: current numa_node = 0x0, would set to val & 7 = 0x3 I.e. the issue appears to be that the HW has set val to a valid value, however, the system is only configured for a single node -- 0, the others are offline. Check to see if the node is actually online before setting the numa node for an AMD northbridge in quirk_amd_nb_node(). Signed-off-by: Prarit Bhargava <prarit@redhat.com> Cc: bhavna.sarathy@amd.com Cc: jbarnes@virtuousgeek.org Cc: andreas.herrmann3@amd.com LKML-Reference: <20091112180933.12532.98685.sendpatchset@prarit.bos.redhat.com> [ v2: clean up the code and add comments ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | x86 VSDO: Fix Kconfig helpRandy Dunlap2009-11-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | COMPAT_VDSO has 2 help text blocks, but kconfig only uses the last one found, so merge the 2 blocks. It would be real nice if kconfig would warn about this. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> LKML-Reference: <4AF9FB6C.70003@oracle.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | x86: Fix typo in Intel CPU cache size descriptorDave Jones2009-11-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I double-checked the datasheet. One of the existing descriptors has a typo: it should be 2MB not 2038 KB. Signed-off-by: Dave Jones <davej@redhat.com> Cc: <stable@kernel.org> # .3x.x: 85160b9: x86: Add new Intel CPU cache size descriptors Cc: <stable@kernel.org> # .3x.x LKML-Reference: <20091110200120.GA27090@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | x86: Add new Intel CPU cache size descriptorsDave Jones2009-11-101-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The latest rev of Intel doc AP-485 details new cache descriptors that we don't yet support. 12MB, 18MB and 24MB 24-way assoc L3 caches. Signed-off-by: Dave Jones <davej@redhat.com> LKML-Reference: <20091110184924.GA20337@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | | | | Merge branch 'x86-setup-for-linus' of ↵Linus Torvalds2009-12-086-2/+37
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: vgacon: Add support for setting the default cursor state vc: Add support for hiding the cursor when creating VTs x86, setup: Store the boot cursor state
| * | | | | | | | vgacon: Add support for setting the default cursor stateMatthew Garrett2009-11-141-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pass the vga cursor state to the vt layer, ensuring that we don't hide the cursor when the bootloader has deliberately disabled it. Signed-off-by: Matthew Garrett <mjg@redhat.com> LKML-Reference: <1258142222-16092-3-git-send-email-mjg@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-21 19:55:13 +0200