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* [PATCH] freepgt: arm26 FIRST_USER_ADDRESS PAGE_SIZEHugh Dickins2005-04-191-5/+4
| | | | | | | | | | | | | ARM26 define FIRST_USER_ADDRESS as PAGE_SIZE (beyond the machine vectors when they are mapped low), and use that definition in place of locally defined MIN_MAP_ADDR. Previously, ARM26 permitted user mappings at 0 if the machine vectors were mapped high; but that's inconsistent with ARM, and FIRST_USER_ADDRESS would then have to be determined at runtime. Let's fix it at PAGE_SIZE throughout the architecture. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] freepgt: arm FIRST_USER_ADDRESS PAGE_SIZEHugh Dickins2005-04-191-9/+2
| | | | | | | | | | ARM define FIRST_USER_ADDRESS as PAGE_SIZE (beyond the machine vectors when they are mapped low), and use that definition in place of locally defined MIN_MAP_ADDR. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] freepgt: hugetlb area is cleanHugh Dickins2005-04-192-46/+2
| | | | | | | | | | Once we're strict about clearing away page tables, hugetlb_prefault can assume there are no page tables left within its range. Since the other arches continue if !pte_none here, let i386 do the same. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] freepgt: hugetlb_free_pgd_rangeHugh Dickins2005-04-192-16/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ia64 and ppc64 had hugetlb_free_pgtables functions which were no longer being called, and it wasn't obvious what to do about them. The ppc64 case turns out to be easy: the associated tables are noted elsewhere and freed later, safe to either skip its hugetlb areas or go through the motions of freeing nothing. Since ia64 does need a special case, restore to ppc64 the special case of skipping them. The ia64 hugetlb case has been broken since pgd_addr_end went in, though it probably appeared to work okay if you just had one such area; in fact it's been broken much longer if you consider a long munmap spanning from another region into the hugetlb region. In the ia64 hugetlb region, more virtual address bits are available than in the other regions, yet the page tables are structured the same way: the page at the bottom is larger. Here we need to scale down each addr before passing it to the standard free_pgd_range. Was about to write a hugely_scaled_down macro, but found htlbpage_to_page already exists for just this purpose. Fixed off-by-one in ia64 is_hugepage_only_range. Uninline free_pgd_range to make it available to ia64. Make sure the vma-gathering loop in free_pgtables cannot join a hugepage_only_range to any other (safe to join huges? probably but don't bother). Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] freepgt: free_pgtables use vma listHugh Dickins2005-04-192-36/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recent woes with some arches needing their own pgd_addr_end macro; and 4-level clear_page_range regression since 2.6.10's clear_page_tables; and its long-standing well-known inefficiency in searching throughout the higher-level page tables for those few entries to clear and free: all can be blamed on ignoring the list of vmas when we free page tables. Replace exit_mmap's clear_page_range of the total user address space by free_pgtables operating on the mm's vma list; unmap_region use it in the same way, giving floor and ceiling beyond which it may not free tables. This brings lmbench fork/exec/sh numbers back to 2.6.10 (unless preempt is enabled, in which case latency fixes spoil unmap_vmas throughput). Beware: the do_mmap_pgoff driver failure case must now use unmap_region instead of zap_page_range, since a page table might have been allocated, and can only be freed while it is touched by some vma. Move free_pgtables from mmap.c to memory.c, where its lower levels are adapted from the clear_page_range levels. (Most of free_pgtables' old code was actually for a non-existent case, prev not properly set up, dating from before hch gave us split_vma.) Pass mmu_gather** in the public interfaces, since we might want to add latency lockdrops later; but no attempt to do so yet, going by vma should itself reduce latency. But what if is_hugepage_only_range? Those ia64 and ppc64 cases need careful examination: put that off until a later patch of the series. What of x86_64's 32bit vdso page __map_syscall32 maps outside any vma? And the range to sparc64's flush_tlb_pgtables? It's less clear to me now that we need to do more than is done here - every PMD_SIZE ever occupied will be flushed, do we really have to flush every PGDIR_SIZE ever partially occupied? A shame to complicate it unnecessarily. Special thanks to David Miller for time spent repairing my ceilings. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge with master.kernel.org:/home/rmk/linux-2.6-rmk.gitLinus Torvalds2005-04-181-0/+33
|\ | | | | | | This adds the missing arch/arm/lib/bitops.h file.
| * [PATCH] ARM: Add missing new file for bitops patchRussell King2005-04-181-0/+33
| | | | | | | | Signed-off-by: Russell King <rmk@arm.linux.org.uk>
* | [PATCH] sparc64: Fix statDavid S. Miller2005-04-182-9/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | Like Alpha, sparc64's struct stat was defined before we had the nanosecond et al. fields added. So like Alpha I have to cons up a struct stat64 to get this stuff. I'll work on the glibc bits soon. Also, we were forgetting to fill in the nanosecond fields in the sparc compat stat64 syscalls. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] M68k: Update defconfigs for 2.6.12-rc2Geert Uytterhoeven2005-04-1812-281/+414
| | | | | | | | | | | | Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] M68k: Update defconfigs for 2.6.11Geert Uytterhoeven2005-04-1812-69/+316
| | | | | | | | | | | | Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86: fix acpi compile without CONFIG_ACPI_BUSChris Wedgwood2005-04-181-0/+2
|/ | | | | | | | | The recent acpi boot patch breaks for me: acpi_fadt needs CONFIG_ACPI_BUS. Signed-off-By: Chris Wedgwood <cw@f00f.org> Acked-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sparc64: Fix copy_sigingo_to_user32()Jurij Smakov2005-04-171-1/+4
| | | | | | | | | The compat routine to copy over this data structure was not handling SI_POLL correctly, breaking various fcntl() variants in compat tasks. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sparc64: Reduce ptrace cache flushingDavid S. Miller2005-04-171-27/+55
| | | | | | | | | | | | | | | | | | | | | | We were flushing the D-cache excessively for ptrace() processing and this makes debugging threads so slow as to be totally unusable. All process page accesses via ptrace() go via access_process_vm(). This routine, for each process page, uses get_user_pages(). That in turn does a flush_dcache_page() on the child pages before we copy in/out the ptrace request data. Therefore, all we need to do after the data movement is: 1) Flush the D-cache pages if the kernel maps the page to a different color than userspace does. 2) If we wrote to the page, we need to flush the I-cache on older cpus. Previously we just flushed the entire cache at the end of a ptrace() request, and that was beyond stupid. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sparc: Fix PTRACE_CONT bogosityDavid S. Miller2005-04-172-31/+0
| | | | | | | | | | | | | | | | | | | | SunOS aparently had this weird PTRACE_CONT semantic which we copied. If the addr argument is something other than 1, it sets the process program counter to whatever that value is. This is different from every other Linux architecture, which don't do anything with the addr and data args. This difference in particular breaks the Linux native GDB support for fork and vfork tracing on sparc and sparc64. There is no interest in running SunOS binaries using this weird PTRACE_CONT behavior, so just delete it so we behave like other platforms do. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sparc64: use message queue compat syscallsDavid S. Miller2005-04-171-1/+1
| | | | | | | | | A couple message queue system call entries for compat tasks were not using the necessary compat_sys_*() functions, causing some glibc test cases to fail. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] sparc64: Do not flush dcache for ZERO_PAGE.David S. Miller2005-04-171-4/+15
| | | | | | | | | | | | | | This case actually can get exercised a lot during an ELF coredump of a process which contains a lot of non-COW'd anonymous pages. GDB has this test case which in partiaular creates near terabyte process full of ZERO_PAGEes. It takes forever to just walk through the page tables because of all of these spurious cache flushes on sparc64. With this change it takes only a second or so. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] ARM: bitopsRussell King2005-04-176-68/+12
| | | | | | | | Convert ARM bitop assembly to a macro. All bitops follow the same format, so it's silly duplicating the code when only one or two instructions are different. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
* [PATCH] ARM: showregsRussell King2005-04-172-10/+13
| | | | | | | | Fix show_regs() to provide a backtrace. Provide a new __show_regs() function which implements the common subset of show_regs() and die(). Add prototypes to asm-arm/system.h Signed-off-by: Russell King <rmk@arm.linux.org.uk>
* [PATCH] ARM: h3600_irda_set_speed argumentsRussell King2005-04-171-1/+1
| | | | | | | h3600_irda_set_speed() had the wrong type for the "speed" argument. Fix this. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
* [PATCH] ARM: footbridge rtc initRussell King2005-04-171-2/+2
| | | | | | | | | The footbridge ISA RTC was being initialised before we had setup the kernel timer. This caused a divide by zero error when the current time of day is set. Resolve this by initialising the RTC after the kernel timer has been initialised. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
* [PATCH] reparent_to_init cleanupCoywolf Qi Hunt2005-04-161-1/+0
| | | | | | | | | This patch hides reparent_to_init(). reparent_to_init() should only be called by daemonize(). Signed-off-by: Coywolf Qi Hunt <coywolf@lovecn.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] add Big Endian variants of ioread/iowriteJames Bottomley2005-04-161-0/+68
| | | | | | | | | | | | | | | | | | In the new io infrastructure, all of our operators are expecting the underlying device to be little endian (because the PCI bus, their main consumer, is LE). However, there are a fair few devices and busses in the world that are actually Big Endian. There's even evidence that some of these BE bus and chip types are attached to LE systems. Thus, there's a need for a BE equivalent of our io{read,write}{16,32} operations. The attached patch adds this as io{read,write}{16,32}be. When it's in, I'll add the first consume (the 53c700 SCSI chip driver). Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] efi: eliminate bad section referencesmaximilian attems2005-04-161-2/+2
| | | | | | | | | | | | | | | | | | | | | | Randy please double check especially this one. there may be a better solution. Fix efi section references: remove __initdata for struct efi efi_phys and struct efi_memory_map memmap Error: ./arch/i386/kernel/efi.o .text refers to 000000d3 R_386_32 .init.data Error: ./arch/i386/kernel/efi.o .text refers to 000000ff R_386_32 .init.data efi_memmap_walk (which is not __init nor static) accesses both efi_phys and memmap. Signed-off-by: maximilian attems <janitor@sternwelten.at> Acked-by: Randy Dunlap <rddunlap@osdl.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: fix compilation for __CHOOSE_MODE additionPaolo 'Blaisorblade' Giarrusso2005-04-161-17/+10
| | | | | | | | | | | | I had added the __CHOOSE_MODE syntax to fix some warnings with newer GCC's in the uml-fix-cond-expr-as-lvalues-warning patch. Here is the update from the version I sent to make it work also when only one mode (TT or SKAS) is enabled. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix u32 vs. pm_message_t in rest of the treePavel Machek2005-04-161-1/+1
| | | | | | | | | This fixes u32 vs. pm_message_t confusion in remaining places. Fortunately there's few of them. 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] u32 vs. pm_message_t in ppc and radeonPavel Machek2005-04-161-1/+1
| | | | | | | | | This fixes pm_message_t vs. u32 confusion in ppc and aty (I *hope* that's basically radeon code...). I was not able to test most of these, but I'm not really changing anything, so it should be okay. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix u32 vs. pm_message_t in x86-64Pavel Machek2005-04-165-5/+5
| | | | | | | | | I thought I'm done with fixing u32 vs. pm_message_t ... unfortunately that turned out not to be the case... Here are fixes x86-64. 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] pm_message_t: more fixes in common and i386Pavel Machek2005-04-166-6/+6
| | | | | | | | | | I thought I'm done with fixing u32 vs. pm_message_t ... unfortunately that turned out not to be the case as Russel King pointed out. Here are fixes for Documentation and common code (mainly system devices). 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] x86, x86_64: dual core proc-cpuinfo and sibling-map fixSiddha, Suresh B2005-04-163-16/+6
| | | | | | | | | | | | | | | | - broken sibling_map setup in x86_64 - grouping all the core and HT related cpuinfo fields. We are reasonably sure that adding new cpuinfo fields after "siblings" field, will not cause any app failure. Thats because today's /proc/cpuinfo format is completely different on x86, x86_64 and we haven't heard of any x86 app breakage because of this issue. Grouping these fields will result in more or less common format on all architectures (ia64, x86 and x86_64) and will cause less confusion. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Switch SMP bootup over to new CPU hotplug state machineAndi Kleen2005-04-164-365/+363
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This will allow hotplug CPU in the future and in general cleans up a lot of crufty code. It also should plug some races that the old hackish way introduces. Remove one old race workaround in NMI watchdog setup that is not needed anymore. I removed the old total sum of bogomips reporting code. The brag value of BogoMips has been greatly devalued in the last years on the open market. Real CPU hotplug will need some more work, but the infrastructure for it is there now. One drawback: the new TSC sync algorithm is less accurate than before. The old way of zeroing TSCs is too intrusive to do later. Instead the TSC of the BP is duplicated now, which is less accurate. akpm: - sync_tsc_bp_init seems to have the sense of `init' inverted. - SPIN_LOCK_UNLOCKED is deprecated - use DEFINE_SPINLOCK. Cc: <rusty@rustcorp.com.au> Cc: <mingo@elte.hu> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Rename the extended cpuid level fieldAndi Kleen2005-04-161-7/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It was confusingly named. Signed-off-by: Andi Kleen <ak@suse.de> DESC x86_64: Switch SMP bootup over to new CPU hotplug state machine EDESC From: "Andi Kleen" <ak@suse.de> This will allow hotplug CPU in the future and in general cleans up a lot of crufty code. It also should plug some races that the old hackish way introduces. Remove one old race workaround in NMI watchdog setup that is not needed anymore. I removed the old total sum of bogomips reporting code. The brag value of BogoMips has been greatly devalued in the last years on the open market. Real CPU hotplug will need some more work, but the infrastructure for it is there now. One drawback: the new TSC sync algorithm is less accurate than before. The old way of zeroing TSCs is too intrusive to do later. Instead the TSC of the BP is duplicated now, which is less accurate. Cc: <rusty@rustcorp.com.au> Cc: <mingo@elte.hu> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Add acpi_skip_timer_override optionAndi Kleen2005-04-161-0/+4
| | | | | | | | Add acpi_skip_timer_override option. It was missing previously. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Rewrite exception stack backtracingAndi Kleen2005-04-161-68/+79
| | | | | | | | | | | | | | | Exceptions and hardware interrupts can, to a certain degree, nest, so when attempting to follow the sequence of stacks used in order to dump their contents this has to be accounted for. Also, IST stacks have their tops stored in the TSS, so there's no need to add the stack size to get to their ends. Minor changes from AK. Signed-off-by: Jan Beulich <jbeulich@novell.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>
* [PATCH] x86_64: Final support for AMD dual coreAndi Kleen2005-04-163-44/+53
| | | | | | | | | | | | | Clean up the code greatly. Now uses the infrastructure from the Intel dual core patch Should fix a final bug noticed by Tyan of not detecting the nodes correctly in some corner cases. Patch for x86-64 and i386 Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: add support for Intel dual-core detection and displayingAndi Kleen2005-04-167-32/+159
| | | | | | | | | | | | | | | | | | | | | Appended patch adds the support for Intel dual-core detection and displaying the core related information in /proc/cpuinfo. It adds two new fields "core id" and "cpu cores" to x86 /proc/cpuinfo and the "core id" field for x86_64("cpu cores" field is already present in x86_64). Number of processor cores in a die is detected using cpuid(4) and this is documented in IA-32 Intel Architecture Software Developer's Manual (vol 2a) (http://developer.intel.com/design/pentium4/manuals/index_new.htm#sdm_vol2a) This patch also adds cpu_core_map similar to cpu_sibling_map. Slightly hacked by AK. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.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>
* [PATCH] x86_64: Keep only a single debug notifier chainAndi Kleen2005-04-161-11/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Calling a notifier three times in the debug handler does not make much sense, because a debugger can figure out the various conditions by itself. Remove the additional calls to DIE_DEBUG and DIE_DEBUGSTEP completely. This matches what i386 does now. This also makes sure interrupts are always still disabled when calling a debugger, which prevents: BUG: using smp_processor_id() in preemptible [00000001] code: tpopf/1470 caller is post_kprobe_handler+0x9/0x70 Call Trace:<ffffffff8024f10f>{smp_processor_id+191} <ffffffff80120e69>{post_kpro be_handler+9} <ffffffff80120f7a>{kprobe_exceptions_notify+58} <ffffffff80144fc0>{notifier_call_chain+32} <ffffffff80110daf>{do_debug+335} <ffffffff8010f513>{debug+127} <EOE> on preemptible debug kernels with kprobes when single stepping in user space. This was probably a bug even on non preempt kernels, this function was supposed to be running with interrupts off according to a comment there. Note to third part debugger maintainers: please double check your debugger can still single step. Cc: <prasanna@in.ibm.com> Cc: <jbeulich@novell.com> Cc: <kaos@sgi.com> Cc: <jim.houston@ccur.com> Cc: <jfv@bluesong.net> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Use the e820 hole to map the IOMMU/AGP apertureAndi Kleen2005-04-161-11/+30
| | | | | | | | This might save memory on some Opteron systems without AGP bridge. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Port over e820 gap detection from i386Andi Kleen2005-04-162-11/+60
| | | | | | | | | | | Look for gaps in the e820 memory map to put PCI resources in. This hopefully fixes problems with the PCI code assigning 32bit BARs MMIO resources which are >32bit. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64-always-use-cpuid-80000008-to-figure-out-mtrr fixSiddha, Suresh B2005-04-161-2/+4
| | | | | | | | | We need to use the size_and_mask in set_mtrr_var_ranges(which is called while programming MTRR's for AP's Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Always use CPUID 80000008 to figure out MTRR address space sizeAndi Kleen2005-04-161-34/+15
| | | | | | | | | | | | | It doesn't make sense to only do this only for AMD K8. This would support future CPUs with extended address spaces properly. For i386 and x86-64 Cc: <davej@redhat.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>
* [PATCH] x86_64: Remove excessive stack allocation in MCE code with large NR_CPUSAndi Kleen2005-04-161-1/+7
| | | | | | | | Remove excessive stack allocation in MCE code with large NR_CPUS Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Use the extended RIP MSR for machine check reporting if ↵Andi Kleen2005-04-161-8/+22
| | | | | | | | | | | | | | | | available. They are rumoured to be much more reliable than the RIP in the stack frame on P4s. This is a borderline case because the code is very simple. Please note there are no plans to add support for all the MCE register MSRs. Cc: <venkatesh.pallipadi@intel.com> Cc: <racing.guo@intel.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>
* [PATCH] x86_64: Don't assume future AMD CPUs have K8 compatible performance ↵Andi Kleen2005-04-161-1/+1
| | | | | | | | | | counters The NMI watchdog code did this incorrectly Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Make kernel math errors a die() nowAndi Kleen2005-04-161-8/+2
| | | | | | | | | | | There were no reports about the previous warning for FPU exceptions in the kernel, so make it a die() now. Also improve the error messages slightly. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Support constantly ticking TSCsAndi Kleen2005-04-162-3/+7
| | | | | | | | | | | | On Intel Noconas the TSC ticks with a constant frequency. Don't scale the factor used by udelay when cpufreq changes the frequency. This generalizes an earlier patch by Intel for this. Cc: <venkatesh.pallipadi@intel.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>
* [PATCH] x86_64: Remove unused macro in preempt supportAndi Kleen2005-04-161-4/+1
| | | | | | | | Remove unused macro in preempt support Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Fix a small missing schedule raceAndi Kleen2005-04-161-1/+1
| | | | | | | | | | | | Could lead to a lost reschedule event when the process already rescheduled on exception exit, and needs it again while still being in the kernel. Unlikely case though. Also remove one redundant cli in another entry.S path. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Regularize exception stack handlingAndi Kleen2005-04-162-51/+55
| | | | | | | | | | | | This fixes various issues in the return path for "paranoid" handlers (= running on a private exception stack that act like NMIs). Generalize previous hack to switch back to process stack for scheduling/signal handling purposes. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Call do_notify_resume unconditionally in entry.SAndi Kleen2005-04-161-18/+8
| | | | | | | | | | | | | This removes some unnecessary code in the assembly files. Matches i386 behaviour. In addition don't clear the work check mask after work has been done. This fixes some theoretical signal/other event losses. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] x86_64: Minor microoptimization in syscall entry slow pathAndi Kleen2005-04-161-3/+1
| | | | | | | | Minor microoptimization in syscall entry slow path Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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