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* [SPARC]: Add robust futex syscall entries.David S. Miller2006-05-222-4/+7
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] s390: next_timer_interrupt overflow in stop_hz_timerMartin Schwidefsky2006-05-211-1/+1
| | | | | | | | | | | | | | The 32 bit unsigned substraction (next - jiffies) in stop_hz_timer can overflow if jiffies gets advanced between next_timer_interrupt and the read under the xtime lock. The cast to a u64 then results in a large value which causes the cpu to wait too long. Fix this by casting next and jiffies independently to u64 before subtracting them. (Spotted by Zachary Amsden <zach@vmware.com>) 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>
* [PATCH] kprobes: bad manipulation of 2 byte opcode on x86_64Satoshi Oshima2006-05-211-3/+3
| | | | | | | | | | | | | | | | | | | | | | | Problem: If we put a probe onto a callq instruction and the probe is executed, kernel panic of Bad RIP value occurs. Root cause: If resume_execution() found 0xff at first byte of p->ainsn.insn, it must check the _second_ byte. But current resume_execution check _first_ byte again. I changed it checks second byte of p->ainsn.insn. Kprobes on i386 don't have this problem, because the implementation is a little bit different from x86_64. Cc: Andi Kleen <ak@muc.de> Signed-off-by: Satoshi Oshima <soshima@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386 kdump boot cpu physical apicid fixVivek Goyal2006-05-211-0/+8
| | | | | | | | | | | | | | | | | | | | | | | o Kdump second kernel boot fails after a system crash if second kernel is UP and acpi=off and if crash occurred on a non-boot cpu. o Issue here is that MP tables report boot cpu lapic id as 0 but second kernel is booting on a different processor and MP table data is stale in this context. Hence apic_id_registered() check fails in setup_local_APIC() when called from APIC_init_uniprocessor(). o Problem is not seen if ACPI is enabled as in that case boot_cpu_physical_apicid is read from the LAPIC. o Problem is not seen with SMP kernels as well because in this case also boot_cpu_physical_apicid is read from LAPIC. (smp_boot_cpus()). o The problem is fixed by reading boot_cpu_physical_apicid from LAPIC if it is a UP kernel and CRASH_DUMP is enabled. Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] build fix: CONFIG_MEMORY_HOTPLUG=y on i386KAMEZAWA Hiroyuki2006-05-211-1/+1
| | | | | | | | | typo in #ifdefs. Fixes http://bugme.osdl.org/show_bug.cgi?id=6538 Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] i386: remove junk from stack dumpChuck Ebbert2006-05-211-3/+1
| | | | | | | | | | i386 stack dump has a "<0>" in the middle of the line and an extra space between columns in multicolumn mode. Remove those and also remove an extra blank line of source code. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-05-202-5/+6
|\ | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3533/1: Implement the __raw_(read|write)_can_lock functions on ARM [ARM] 3530/1: PXA Mainstone: prevent double enable_irq() in pcmcia [ARM] 3529/1: s3c24xx: fix restoring control register with undefined instruction
| * [ARM] 3530/1: PXA Mainstone: prevent double enable_irq() in pcmciaThomas Gleixner2006-05-171-1/+4
| | | | | | | | | | | | | | | | | | | | | | Patch from Thomas Gleixner The mainstone board pcmcia interrupt have been enabled via setup_irq() and the following socket check calls enable_irq again. Set the NOAUTOEN flag so the interrupt is not automatically enabled in setup_irq() Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] 3529/1: s3c24xx: fix restoring control register with undefined instructionDimitry Andric2006-05-171-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Dimitry Andric In arch/arm/mach-s3c2410/sleep.S, the coprocessor registers are saved at suspend time, and restored at resume time. However, an undefined instruction is used when attempting to restore a non-existent "auxiliary control register". This leads to a crash on S3C2412, which has an ARM926 core instead of an ARM920. At suspend time, the following fragment runs: mrc p15, 0, r7, c2, c0, 0 @ translation table base address mrc p15, 0, r8, c2, c0, 0 @ auxiliary control register mrc p15, 0, r9, c1, c0, 0 @ control register and at resume time, the following fragment runs: mcr p15, 0, r7, c2, c0, 0 @ translation table base mcr p15, 0, r8, c1, c1, 0 @ auxilliary control ... mcr p15, 0, r9, c1, c0, 0 @ turn on MMU, etc There are several problems with these fragments: 1. The ARM920 and ARM926 cores don't have any "auxiliary control register", at least not according to the ARM920 and ARM926 TRM's. 2. The 2nd line of suspend erroneously saves the c2 register again. 3. This saved c2 value is restored using an undefined instruction. For some reason this does not crash on ARM920, but does crash on ARM926. The following patch fixes all these problems. Signed-off-by: Dimitry Andric <dimitry@andric.com> Yes, this looks sensible Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge branch 'release' of ↵Linus Torvalds2006-05-173-5/+4
|\ \ | |/ |/| | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] one-line cleanup on set_irq_affinity_info [IA64] fix broken irq affinity [IA64] sn2 defconfig
| * [IA64] one-line cleanup on set_irq_affinity_infoChen, Kenneth W2006-05-171-1/+0
| | | | | | | | | | | | | | | | | | Calls to set_irq_info in set_irq_affinity_info() is redundant because irq_affinity mask was set just one line immediately above it. Remove that duplicate call. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] fix broken irq affinityChen, Kenneth W2006-05-171-2/+2
| | | | | | | | | | | | | | | | When CONFIG_PCI_MSI is set, move_irq() is an empty function, causing grief when sys admin tries to bind interrupt to CPU. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] sn2 defconfigJes Sorensen2006-05-171-2/+2
| | | | | | | | | | | | | | Set node shift to 10 on SN2 and disable mutex debugging. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-05-177-14/+30
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] arch/arm/kernel/dma-isa.c: named initializers [ARM] 3527/1: MPCore Boot Lockup Fix [ARM] arch/arm/kernel/process.c: Fix warning [ARM] 3526/1: ioremap should use vunmap instead of vfree on ARM [ARM] 3524/1: ARM EABI: more 64-bit aligned stack fixes [ARM] 3517/1: move definition of PROC_INFO_SZ from procinfo.h to asm-offsets.h
| * | [ARM] arch/arm/kernel/dma-isa.c: named initializersAdrian Bunk2006-05-161-6/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts struct dma_resources to named initializers. Besides fixing a compile error in -mm, it didn't sound like a bad idea. Signed-off-by: Adrian Bunk <bunk@stusta.de> Acked-by: Alexander Schulz <alex@shark-linux.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 3527/1: MPCore Boot Lockup FixHarry Fearnhamm2006-05-161-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Harry Fearnhamm This patch fixes the occasional lockup seen in early boot stage on RealView MPCore system. Signed-off-by: Harry Fearnhamm <Harry.Fearnhamm@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] arch/arm/kernel/process.c: Fix warningRussell King2006-05-161-1/+1
| | | | | | | | | | | | | | | | | | arch/arm/kernel/process.c:314: warning: assignment makes integer from pointer without a cast Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 3526/1: ioremap should use vunmap instead of vfree on ARMCatalin Marinas2006-05-161-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Catalin Marinas This patch modifies the __ioremap_pfn and __iounmap functions in arch/arm/mm/ioremap.c to use vunmap instead of vfree. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 3524/1: ARM EABI: more 64-bit aligned stack fixesNicolas Pitre2006-05-162-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre Assembly code that calls C code must ensure the C code sees a 64-bit aligned stack pointer. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 3517/1: move definition of PROC_INFO_SZ from procinfo.h to asm-offsets.hUwe Zeisberger2006-05-161-0/+2
| |/ | | | | | | | | | | | | | | | | | | | | Patch from Uwe Zeisberger The symbol is only used in arch/arm/kernel/head-common.S. This in turn is included from arch/arm/kernel/head.S and arch/arm/kernel/head-nommu.S which include asm-offsets.h . Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | Merge branch 'merge' of ↵Linus Torvalds2006-05-162-2/+2
|\ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [PATCH] Fix pSeries identification in prom_init.c [PATCH] powerpc: fix kernel version display on pseries boxes
| * | [PATCH] Fix pSeries identification in prom_init.cBenjamin Herrenschmidt2006-05-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The OF trampoline code prom_init.c still needs to identify IBM pSeries (PAPR) machines in order to run some platform specific code on them like instanciating the TCE tables. The code doing that detection was changed recently in 2.6.17 early stages but was done slightly incorrectly. It should be testing for an exact match of "chrp" and it currently tests for anything that begins with "chrp". That means it will incorrectly match with platforms using Maple-like device-trees and have open firmware. This fixes it by using strcmp instead of strncmp to match what the actual platform detection code does. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [PATCH] powerpc: fix kernel version display on pseries boxesAnton Blanchard2006-05-161-1/+1
| |/ | | | | | | | | | | | | | | | | We are displaying the wrong thing on the operator panel (2x40 character LCD). This got broken in commit cebb21b5, when UTS_RELEASE got changed to system_utsname.version. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] x86_64: Don't schedule on exception stack on preemptive kernelsAndi Kleen2006-05-161-4/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Extends an earlier patch from John Blackwood to more exception handlers that also run on the exception stacks. Expand the use of preempt_conditional_{sti,cli} to all cases where interrupts are to be re-enabled during exception handling while running on an IST stack. Based on original patch from Jan Beulich. Cc: John Blackwood <john.blackwood@ccur.com> Cc: jbeulich@novell.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: Fix memory hotadd heuristicsAndi Kleen2006-05-161-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes some boot failures on Dell and Unisys systems with memory hotadd added. - Set hotadd_percent to 0 by default. This means anybody using hotadd memory needs to specify the value on the command line. That's because there are lots of Intel boxes which have a bogus hotplug area in their SRAT and they would waste a lot of memory before. - Fix calculation of how much memory to use when the hotplug area exceeds hotadd_percent - Fix fallback when the - Fix fallback if memory hotadd is not compiled in. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] i386/x86_64: Force pci=noacpi on HP XW9300Andi Kleen2006-05-161-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | This is needed to see all devices. The system has multiple PCI segments and we don't handle that properly yet in PCI and ACPI. Short term before this is fixed blacklist it to pci=noacpi. Acked-by: len.brown@intel.com Cc: gregkh@suse.de Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: Don't warn for overflow in nommu case when dma_mask is < 32bitAndi Kleen2006-05-161-3/+4
|/ | | | | | | | | | | This triggers for b44's 1GB DMA workaround which tries to map first and then bounces. The 32bit heuristic is reasonable because the IOMMU doesn't attempt to handle < 32bit masks anyways. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix hotplug kconfig helpPavel Machek2006-05-151-3/+3
| | | | | | | | | HOTPLUG_CPU entry says "Say Y..." then "Say N.". Slightly ugly, so I fixed it up, and added remark about suspend on SMP as a bonus. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Add Core Solo and Core Duo support to oprofileBenjamin LaHaise2006-05-151-3/+4
| | | | | | | | | | | | | Add support to oprofile for the Intel Core Solo and Core Duo processors. See also the patch to add support to oprofile-0.9.1-8.1.1 at http://www.kvack.org/~bcrl/patches/oprofile/oprofile-core-0.9.1.diff . Signed-off-by: Benjamin LaHaise <benjamin.c.lahaise@intel.com> Cc: Philippe Elie <phil.el@wanadoo.fr> Cc: John Levon <levon@movementarian.org> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] s390: add vmsplice system callMartin Schwidefsky2006-05-152-0/+9
| | | | | | | | | | Add new vmsplice system call and add missing __NR_xxx defines for sys_set_robust_list, sys_get_robust_list, sys_splice, sys_sync_file_range and sys_tee. 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>
* [PATCH] s390: exploit rcu_needs_cpu() interfaceHeiko Carstens2006-05-151-3/+4
| | | | | | | | Exploit rcu_needs_cpu() interface to keep the cpu 'ticking' if necessary. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Revert "[PATCH] i386: export: memory more than 4G through /proc/iomem"Linus Torvalds2006-05-131-0/+2
| | | | | | | | | | | | | | | | | | | This reverts commit 10dbe196a8da6b3196881269c6639c0ec11c36cb. The resource struct is still 32-bit, so trying to save a 64-bit memory size there obviously won't work. When we merge the 64-bit resource series, we can re-enable this. Thanks to Sachin Sant and Maneesh Soni for debugging Cc: Maneesh Soni <maneesh@in.ibm.com> Cc: Sachin Sant <sachinp@in.ibm.com> Cc: Russell King <rmk+lkml@arm.linux.org.uk> Cc: Sharyathi Nagesh <sharyath@in.ibm.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2006-05-135-19/+24
|\ | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC]: Fix warning on prom_getproperty in openprom.c [SPARC]: Handle UNWIND_INFO properly. [SPARC64]: Update defconfig. [SPARC]: show device name in /proc/dvma_map [SPARC]: Remove duplicate symbol exports
| * [SPARC]: Handle UNWIND_INFO properly.David S. Miller2006-05-123-1/+8
| | | | | | | | | | | | | | | | | | For sparc32 we need R_SPARC_UA32 relocation support, for sparc64 we need the handle R_SPARC_DISP32 relocations. Based upon reports and initial patch by Martin Habets. Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SPARC64]: Update defconfig.David S. Miller2006-05-091-6/+12
| | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SPARC]: show device name in /proc/dvma_mapMartin Habets2006-05-081-0/+5
| | | | | | | | | | | | | | | | This patch will set the device name in a resource, which will be shown in /proc/dvma_map. Signed-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
| * [SPARC]: Remove duplicate symbol exportsMartin Habets2006-05-081-13/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch resolves the following build warnings seen in 2.6.17-rc3: WARNING: vmlinux: 'sys_close' exported twice. Previous export was in vmlinux WARNING: vmlinux: 'memchr' exported twice. Previous export was in vmlinux WARNING: vmlinux: 'strstr' exported twice. Previous export was in vmlinux WARNING: vmlinux: 'strnlen' exported twice. Previous export was in vmlinux WARNING: vmlinux: 'strrchr' exported twice. Previous export was in vmlinux WARNING: vmlinux: 'strchr' exported twice. Previous export was in vmlinux WARNING: vmlinux: 'strcmp' exported twice. Previous export was in vmlinux WARNING: vmlinux: 'strncat' exported twice. Previous export was in vmlinux WARNING: vmlinux: 'strcat' exported twice. Previous export was in vmlinux WARNING: vmlinux: 'strncpy' exported twice. Previous export was in vmlinux WARNING: vmlinux: 'strcpy' exported twice. Previous export was in vmlinux Signed-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2006-05-124-339/+607
|\ \ | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] 3508/1: Update collie defconfig [ARM] Fix thread struct allocator for SMP case [ARM] Update mach-types [ARM] Update versatile_defconfig
| * | [ARM] 3508/1: Update collie defconfigPavel Machek2006-05-091-174/+256
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Pavel Machek Update collie defconfig to something that can bring closer-to-working system to its user. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] Fix thread struct allocator for SMP caseRussell King2006-05-091-12/+25
| | | | | | | | | | | | | | | | | | | | | | | | The ARM thread struct allocator is racy on SMP systems. Fix it by turning it into a per-cpu based allocator. This also allows keeps the cache cache warm for thread structs and kernel stacks. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] Update mach-typesRussell King2006-05-081-9/+80
| | | | | | | | | | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] Update versatile_defconfigRussell King2006-05-081-144/+246
| |/ | | | | | | | | | | | | Update versatile default configuration, enabling the AACI sound driver, VFP and Versatile AB support. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] ppc32/8xx: Fix r3 trashing due to 8MB TLB page instantiationMarcelo Tosatti2006-05-091-4/+0
| | | | | | | | | | | | | | | | | | Instantiation of 8MB pages on the TLB cache for the kernel static mapping trashes r3 register on !CONFIG_8xx_CPU6 configurations. This ensures r3 gets saved and restored. Signed-off-by: Marcelo Tosatti <marcelo@kvack.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] x86_64: Avoid EBDA area in early boot allocatorAndi Kleen2006-05-082-8/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on analysis&patch from Robert Hentosch Observed on a Dell PE6850 with 16GB The problem occurs very early on, when the kernel allocates space for the temporary memory map called bootmap. The bootmap overlaps the EBDA region. EBDA region is not historically reserved in the e820 mapping. When the bootmap is freed it marks the EBDA region as usable. If you notice in setup.c there is already code to work around the EBDA in reserve_ebda_region(), this check however occurs after the bootmap is allocated and doesn't prevent the bootmap from using this range. AK: I redid the original patch. Thanks also to Jan Beulich for spotting some mistakes. Cc: Robert_Hentosch@dell.com Cc: jbeulich@novell.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: add nmi_exit to die_nmiCorey Minyard2006-05-081-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Playing with NMI watchdog on x86_64, I discovered that it didn't do what I expected. It always panic-ed, even when it didn't happen from interrupt context. This patch solves that problem for me. Also, in this case, do_exit() will be called with interrupts disabled, I believe. Would it be wise to also call local_irq_enable() after nmi_exit()? [Yes I added it -AK] Currently, on x86_64, any NMI watchdog timeout will cause a panic because the irq count will always be set to be in an interrupt when do_exit() is called from die_nmi(). If we add nmi_exit() to the die_nmi() call (since the nmi will never exit "normally") it seems to solve this problem. The following small program can be used to trigger the NMI watchdog to reproduce this: main () { iopl(3); for (;;) asm("cli"); } Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: fix die_lock nestingCorey Minyard2006-05-081-1/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | I noticed this when poking around in this area. The oops_begin() function in x86_64 would only conditionally claim the die_lock if the call is nested, but oops_end() would always release the spinlock. This patch adds a nest count for the die lock so that the release of the lock is only done on the final oops_end(). Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: Check for too many northbridges in IOMMU codeAndi Kleen2006-05-081-0/+8
| | | | | | | | | | | | | | | | The IOMMU code can only deal with 8 northbridges. Error out when more are found. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86_64: avoid IRQ0 ioapic pin collisionKimball Murray2006-05-084-2/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch addresses a problem with ACPI SCI interrupt entry, which gets re-used, and the IRQ is assigned to another unrelated device. The patch corrects the code such that SCI IRQ is skipped and duplicate entry is avoided. Second issue came up with VIA chipset, the problem was caused by original patch assigning IRQs starting 16 and up. The VIA chipset uses 4-bit IRQ register for internal interrupt routing, and therefore cannot handle IRQ numbers assigned to its devices. The patch corrects this problem by allowing PCI IRQs below 16. Cc: len.brown@intel.com Signed-off by: Natalie Protasevich <Natalie.Protasevich@unisys.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge branch 'release' of ↵Linus Torvalds2006-05-081-3/+6
|\ \ | |/ |/| | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] remove asm-ia64/bitops.h self-inclusion [IA64] strcpy returns NULL pointer and not destination pointer
| * [IA64] strcpy returns NULL pointer and not destination pointerChen, Kenneth W2006-05-051-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bob Picco noted that 6edfba1b33c701108717f4e036320fc39abe1912 dropped the -ffreestanding compiler flag from the top level Makefile, which allows the compiler to substitute memcpy() in places where strcpy() is used with a known size source string. But the ia64 memcpy() returns 0 for success, and "bytes copied" for failure. Fix to return the address of the destination string (like stdlibc version, and other architectures). There are no places where ia64 specific code makes use of the non-standard return value. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
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