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2008-12-29x86, pci: move arch/x86/pci/pci.h to arch/x86/include/asm/pci_x86.hJaswinder Singh Rajput
Impact: cleanup Now that arch/x86/pci/pci.h is used in a number of other places as well, move the lowlevel x86 pci definitions into the architecture include files. (not to be confused with the existing arch/x86/include/asm/pci.h file, which provides public details about x86 PCI) Tested on: X86_32_UP, X86_32_SMP and X86_64_SMP Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-29x86: efi.c declare add_efi_memmap before they get usedJaswinder Singh Rajput
Impact: cleanup, avoid sparse warning Fixes this sparse warning: arch/x86/kernel/efi.c:67:5: warning: symbol 'add_efi_memmap' was not declared. Should it be static? Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-29x86: apic.c declare pic_mode before they get usedJaswinder Singh Rajput
Impact: cleanup, avoid sparse warning In asm/mpspec.h moved out pic_mode from CONFIG_X86_32 as it is common for both 32 and 64 bit. Fixes this sparse warning for x86_64: arch/x86/kernel/apic.c:128:5: warning: symbol 'pic_mode' was not declared. Should it be static? Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-29x86: introducing asm/sys_ia32.hJaswinder Singh Rajput
Impact: cleanup, avoid 44 sparse warnings, new file asm/sys_ia32.h Fixes following sparse warnings: CHECK arch/x86/ia32/sys_ia32.c arch/x86/ia32/sys_ia32.c:53:17: warning: symbol 'sys32_truncate64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:60:17: warning: symbol 'sys32_ftruncate64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:98:17: warning: symbol 'sys32_stat64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:109:17: warning: symbol 'sys32_lstat64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:119:17: warning: symbol 'sys32_fstat64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:128:17: warning: symbol 'sys32_fstatat' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:164:17: warning: symbol 'sys32_mmap' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:195:17: warning: symbol 'sys32_mprotect' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:201:17: warning: symbol 'sys32_pipe' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:215:17: warning: symbol 'sys32_rt_sigaction' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:291:17: warning: symbol 'sys32_sigaction' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:330:17: warning: symbol 'sys32_rt_sigprocmask' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:370:17: warning: symbol 'sys32_alarm' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:383:17: warning: symbol 'sys32_old_select' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:393:17: warning: symbol 'sys32_waitpid' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:401:17: warning: symbol 'sys32_sysfs' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:406:17: warning: symbol 'sys32_sched_rr_get_interval' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:421:17: warning: symbol 'sys32_rt_sigpending' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:445:17: warning: symbol 'sys32_rt_sigqueueinfo' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:472:17: warning: symbol 'sys32_sysctl' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:517:17: warning: symbol 'sys32_pread' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:524:17: warning: symbol 'sys32_pwrite' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:532:17: warning: symbol 'sys32_personality' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:545:17: warning: symbol 'sys32_sendfile' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:565:17: warning: symbol 'sys32_mmap2' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:589:17: warning: symbol 'sys32_olduname' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:626:6: warning: symbol 'sys32_uname' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:641:6: warning: symbol 'sys32_ustat' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:663:17: warning: symbol 'sys32_execve' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:678:17: warning: symbol 'sys32_clone' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:693:6: warning: symbol 'sys32_lseek' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:698:6: warning: symbol 'sys32_kill' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:703:6: warning: symbol 'sys32_fadvise64_64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:712:6: warning: symbol 'sys32_vm86_warning' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:726:6: warning: symbol 'sys32_lookup_dcookie' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:732:20: warning: symbol 'sys32_readahead' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:738:17: warning: symbol 'sys32_sync_file_range' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:746:17: warning: symbol 'sys32_fadvise64' was not declared. Should it be static? arch/x86/ia32/sys_ia32.c:753:17: warning: symbol 'sys32_fallocate' was not declared. Should it be static? CHECK arch/x86/ia32/ia32_signal.c arch/x86/ia32/ia32_signal.c:126:17: warning: symbol 'sys32_sigsuspend' was not declared. Should it be static? arch/x86/ia32/ia32_signal.c:141:17: warning: symbol 'sys32_sigaltstack' was not declared. Should it be static? arch/x86/ia32/ia32_signal.c:249:17: warning: symbol 'sys32_sigreturn' was not declared. Should it be static? arch/x86/ia32/ia32_signal.c:279:17: warning: symbol 'sys32_rt_sigreturn' was not declared. Should it be static? CHECK arch/x86/ia32/ipc32.c arch/x86/ia32/ipc32.c:12:17: warning: symbol 'sys32_ipc' was not declared. Should it be static? Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-29Merge branch 'linus' into x86/cleanupsIngo Molnar
2008-12-28Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (85 commits) [S390] provide documentation for hvc_iucv kernel parameter. [S390] convert ctcm printks to dev_xxx and pr_xxx macros. [S390] convert zfcp printks to pr_xxx macros. [S390] convert vmlogrdr printks to pr_xxx macros. [S390] convert zfcp dumper printks to pr_xxx macros. [S390] convert cpu related printks to pr_xxx macros. [S390] convert qeth printks to dev_xxx and pr_xxx macros. [S390] convert sclp printks to pr_xxx macros. [S390] convert iucv printks to dev_xxx and pr_xxx macros. [S390] convert ap_bus printks to pr_xxx macros. [S390] convert dcssblk and extmem printks messages to pr_xxx macros. [S390] convert monwriter printks to pr_xxx macros. [S390] convert s390 debug feature printks to pr_xxx macros. [S390] convert monreader printks to pr_xxx macros. [S390] convert appldata printks to pr_xxx macros. [S390] convert setup printks to pr_xxx macros. [S390] convert hypfs printks to pr_xxx macros. [S390] convert time printks to pr_xxx macros. [S390] convert cpacf printks to pr_xxx macros. [S390] convert cio printks to pr_xxx macros. ...
2008-12-28Merge branch 'tracing-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (241 commits) sched, trace: update trace_sched_wakeup() tracing/ftrace: don't trace on early stage of a secondary cpu boot, v3 Revert "x86: disable X86_PTRACE_BTS" ring-buffer: prevent false positive warning ring-buffer: fix dangling commit race ftrace: enable format arguments checking x86, bts: memory accounting x86, bts: add fork and exit handling ftrace: introduce tracing_reset_online_cpus() helper tracing: fix warnings in kernel/trace/trace_sched_switch.c tracing: fix warning in kernel/trace/trace.c tracing/ring-buffer: remove unused ring_buffer size trace: fix task state printout ftrace: add not to regex on filtering functions trace: better use of stack_trace_enabled for boot up code trace: add a way to enable or disable the stack tracer x86: entry_64 - introduce FTRACE_ frame macro v2 tracing/ftrace: add the printk-msg-only option tracing/ftrace: use preempt_enable_no_resched_notrace in ring_buffer_time_stamp() x86, bts: correctly report invalid bts records ... Fixed up trivial conflict in scripts/recordmcount.pl due to SH bits being already partly merged by the SH merge.
2008-12-27x86: apic.c x2apic_preenabled and disable_x2apic should be staticJaswinder Singh
Impact: cleanup, reduce kernel size a bit, avoid sparse warning Fixes sparse warning: arch/x86/kernel/apic.c:103:5: warning: symbol 'disable_x2apic' was not declared. Should it be static? Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-25[S390] arch_setup_additional_pages argumentsMartin Schwidefsky
arch_setup_additional_pages currently gets two arguments, the binary format descripton and an indication if the process uses an executable stack or not. The second argument is not used by anybody, it could be removed without replacement. What actually does make sense is to pass an indication if the process uses the elf interpreter or not. The glibc code will not use anything from the vdso if the process does not use the dynamic linker, so for statically linked binaries the architecture backend can choose not to map the vdso. Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-12-25Merge branches 'tracing/ftrace', 'tracing/hw-branch-tracing' and ↵Ingo Molnar
'tracing/ring-buffer'; commit 'v2.6.28' into tracing/core
2008-12-25Merge branch 'x86/tsc' into tracing/coreIngo Molnar
Merge it to resolve this incidental conflict between the BTS fixes/cleanups and changes in x86/tsc: Conflicts: arch/x86/kernel/cpu/intel.c
2008-12-25tracing/ftrace: don't trace on early stage of a secondary cpu boot, v3Frederic Weisbecker
Impact: fix a crash/hard-reboot on certain configs while enabling cpu runtime On some archs, the boot of a secondary cpu can have an early fragile state. On x86-64, the pda is not initialized on the first stage of a cpu boot but it is needed to get the cpu number and the current task pointer. This data is needed during tracing. As they were dereferenced at this stage, we got a crash while tracing a cpu being enabled at runtime. Some other archs like ia64 can have such kind of issue too. Changes on v2: We dropped the previous solution of a per-arch called function to guess the current state of a cpu. That could slow down the tracing. This patch removes the -pg flag on arch/x86/kernel/cpu/common.c where the low level cpu boot functions exist, on start_secondary() and a helper function used at this stage. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-23Merge branch 'x86/irq' into x86/coreIngo Molnar
2008-12-23Merge branch 'x86/iommu' into x86/coreIngo Molnar
2008-12-23Merge branches 'x86/apic', 'x86/cleanups', 'x86/cpufeature', ↵Ingo Molnar
'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/detect-hyper', 'x86/doc', 'x86/dumpstack', 'x86/early-printk', 'x86/fpu', 'x86/idle', 'x86/io', 'x86/memory-corruption-check', 'x86/microcode', 'x86/mm', 'x86/mtrr', 'x86/nmi-watchdog', 'x86/pat2', 'x86/pci-ioapic-boot-irq-quirks', 'x86/ptrace', 'x86/quirks', 'x86/reboot', 'x86/setup-memory', 'x86/signal', 'x86/sparse-fixes', 'x86/time', 'x86/uv' and 'x86/xen' into x86/core
2008-12-23Merge branch 'x86/apic' into x86/irqIngo Molnar
Conflicts: arch/x86/kernel/apic.c
2008-12-20x86, bts: add fork and exit handlingMarkus Metzger
Impact: introduce new ptrace facility Add arch_ptrace_untrace() function that is called when the tracer detaches (either voluntarily or when the tracing task dies); ptrace_disable() is only called on a voluntary detach. Add ptrace_fork() and arch_ptrace_fork(). They are called when a traced task is forked. Clear DS and BTS related fields on fork. Release DS resources and reclaim memory in ptrace_untrace(). This releases resources already when the tracing task dies. We used to do that when the traced task dies. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-19x86: PAT: move track untrack pfnmap stubs to asm-genericvenkatesh.pallipadi@intel.com
Impact: Cleanup and branch hints only. Move the track and untrack pfn stub routines from memory.c to asm-generic. Also add unlikely to pfnmap related calls in fork and exit path. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-19x86: PAT: remove follow_pfnmap_pte in favor of follow_physvenkatesh.pallipadi@intel.com
Impact: Cleanup - removes a new function in favor of a recently modified older one. Replace follow_pfnmap_pte in pat code with follow_phys. follow_phys lso returns protection eliminating the need of pte_pgprot call. Using follow_phys also eliminates the need for pte_pa. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-19Merge branches 'tracing/ftrace', 'tracing/ring-buffer' and 'tracing/urgent' ↵Ingo Molnar
into tracing/core Conflicts: include/linux/ftrace.h
2008-12-18x86: ia32.h: remove unused struct sigfram32 and rt_sigframe32Hiroshi Shimamoto
Impact: cleanup Remove struct sigfram32 and rt_sigframe32 because there is no user. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18x86: sigframe.h: include headers for dependencyHiroshi Shimamoto
Impact: cleanup Include following headers for dependency. asm/sigcontext.h asm/siginfo.h asm/ucontext.h Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18x86: traps.c declare functions before they get usedJaswinder Singh
Impact: cleanup In asm/traps.h :- do_double_fault : added under X86_64 sync_regs : added under X86_64 math_error : moved out from X86_32 as it is common for both 32 and 64 bit math_emulate : moved from X86_32 as it is common for both 32 and 64 bit smp_thermal_interrupt : added under X86_64 mce_threshold_interrupt : added under X86_64 Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-18x86: PAT: add pgprot_writecombine() interface for drivers - v3venkatesh.pallipadi@intel.com
Impact: New mm functionality. Add pgprot_writecombine. pgprot_writecombine will be aliased to pgprot_noncached when not supported by the architecture. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18x86: PAT: change pgprot_noncached to uc_minus instead of strong uc - v3venkatesh.pallipadi@intel.com
Impact: mm behavior change. Make pgprot_noncached uc_minus instead of strong UC. This will make pgprot_noncached to be in line with ioremap_nocache() and all the other APIs that map page uc_minus on uc request. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18x86: PAT: implement track/untrack of pfnmap regions for x86 - v3venkatesh.pallipadi@intel.com
Impact: New mm functionality. Hookup remap_pfn_range and vm_insert_pfn and corresponding copy and free routines with reserve and free tracking. reserve and free here only takes care of non RAM region mapping. For RAM region, driver should use set_memory_[uc|wc|wb] to set the cache type and then setup the mapping for user pte. We can bypass below reserve/free in that case. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18x86: sigframe.h: add guard macroHiroshi Shimamoto
Impact: cleanup Add missing guard macro _ASM_X86_SIGFRAME_H. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-18x86: tls.c declare sys_set_thread_area and sys_get_thread_area before they ↵Jaswinder Singh
get used Impact: cleanup In asm/syscalls.h move out sys_set_thread_area() and sys_get_thread_area() as they are common for both 32 and 64 bit. Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-18x86: signal: prepare to include from ia32_signal.cHiroshi Shimamoto
Impact: cleanup, prepare to use from ia32_signal.c Make struct sigframe_ia32 and rt_sigframe_ia32 visible to ia32_signal.c. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-18x86: signal: move sigframe.h to arch/x86/include/asmHiroshi Shimamoto
Impact: cleanup, move header file Move arch/x86/kernel/sigframe.h to arch/x86/include/asm/sigframe.h. It will be used in arch/x86/ia32/ia32_signal.c. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-17x86: entry_64 - introduce FTRACE_ frame macro v2Cyrill Gorcunov
Impact: clean up Itroduce MCOUNT_SAVE/RESTORE_FRAME which allow us to save a number of lines on source level. Also fix a comment in ftrace.h. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16sgi-xp: xpc needs to pass the physical address, not virtualRuss Anderson
Impact: fix crash xpc needs to pass the physical address, not virtual. Testing uncovered this problem. The virtual address happens to work most of the time due to the way bios was masking off the node bits. Passing the physical address makes it work all of the time. Signed-off-by: Russ Anderson <rja@sgi.com> Acked-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16x86: UV fix for global physical addressesJack Steiner
Impact: fix UV boot crash This fixes a UV bug related to generating global memory addresses on partitioned systems. Partition systems do not have physical memory at address 0. Instead, a chunk of high memory is remapped by the chipset so that it appears to be at address 0. This remapping is INVISIBLE to most of the OS. The only OS functions that need to be aware of the remaping are functions that directly interface to the chipset. The GRU is one example. Also, delete a couple of unused macros related to global memory addresses. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16Merge commit 'v2.6.28-rc8' into x86/uvIngo Molnar
2008-12-16Merge commit 'v2.6.28-rc8' into x86/docIngo Molnar
2008-12-16xen: clean up asm/xen/hypervisor.hJeremy Fitzhardinge
Impact: cleanup hypervisor.h had accumulated a lot of crud, including lots of spurious #includes. Clean it all up, and go around fixing up everything else accordingly. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16x86: ldt.c declare sys_modify_ldt before they get usedJaswinder Singh
Impact: cleanup In asm/syscalls.h moved out sys_modify_ldt from CONFIG_X86_32 as it is common for both 32 and 64 bit. Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16x86: signal.c declare do_notify_resume before they get usedJaswinder Singh
Impact: cleanup In asm/signal.h moved out do_notify_resume from __i386__ as it is common for both 32 and 64 bit. Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> arch/x86/include/asm/signal.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
2008-12-16x86: process_64.c declare __switch_to() and sys_arch_prctl before they get usedJaswinder Singh
Impact: cleanup In asm/system.h moved out __switch_to from CONFIG_X86_32 as it is common for both 32 and 64 bit. In asm/pctl.h defined sys_arch_prctl Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16Merge branch 'x86/cpufeature' into x86/tscIngo Molnar
Merge itto in x86/tsc because an upcoming patch relies on a new cpuid bit defined in the x86/cpufeature branch.
2008-12-16x86: support always running TSC on Intel CPUs, add cpufeature definitionIngo Molnar
Impact: add new synthetic-cpuid bit definition add X86_FEATURE_NONSTOP_TSC to the cpufeature bits - this is in preparation of Venki's always-running-TSC patch. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16Merge commit 'v2.6.28-rc8' into x86/cpufeatureIngo Molnar
2008-12-16x86: microcode_amd: replace inline asm by common rdmsr/wrmsr functionsAndreas Herrmann
Impact: cleanup Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16x86, mm: limit MAXMEM on 64-bitIngo Molnar
on 64-bit x86 the physical memory limit is controlled by the sparsemem bits - which are 44 bits right now. But MAXMEM (the max pfn number e820 parsing will allow to enter our sizing routines) is set to 0x00003fffffffffff, i.e. 46 bits - that's too large because it overlaps into the vmalloc range. So couple MAXMEM to MAX_PHYSMEM_BITS, and add a comment that the maximum of MAX_PHYSMEM_BITS is 45 bits. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16x86, 32-bit: improve lazy TLB handling codeJan Beulich
Impact: micro-optimize the 32-bit TLB flush code Use the faster x86_{read,write}_percpu() accessors here. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16allow bug table entries to use relative pointers (and use it on x86-64)Jan Beulich
Impact: reduce bug table size This allows reducing the bug table size by half. Perhaps there are other 64-bit architectures that could also make use of this. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16x86: consolidate __swp_XXX() macrosJan Beulich
Impact: cleanup, code robustization The __swp_...() macros silently relied upon which bits are used for _PAGE_FILE and _PAGE_PROTNONE. After having changed _PAGE_PROTNONE in our Xen kernel to no longer overlap _PAGE_PAT, live locks and crashes were reported that could have been avoided if these macros properly used the symbolic constants. Since, as pointed out earlier, for Xen Dom0 support mainline likewise will need to eliminate the conflict between _PAGE_PAT and _PAGE_PROTNONE, this patch does all the necessary adjustments, plus it introduces a mechanism to check consistency between MAX_SWAPFILES_SHIFT and the actual encoding macros. This also fixes a latent bug in that x86-64 used a 6-bit mask in __swp_type(), and if MAX_SWAPFILES_SHIFT was increased beyond 5 in (the seemingly unrelated) linux/swap.h, this would have resulted in a collision with _PAGE_FILE. Non-PAE 32-bit code gets similarly adjusted for its pte_to_pgoff() and pgoff_to_pte() calculations. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16x86: convert rdtscll() to use __native_read_tscKen Chen
Impact: micro-optimization Is there any reason why x86 rdtscll have to use the out of line function instead of inline __native_read_tsc()? native_read_tsc and __native_read_tsc is essentially the same functions. Patch to let x86 rdtscll() to use the inline version of read_tsc. Signed-off-by: Ken Chen <kenchen@google.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-14x86 Fix VMI crash on boot in 2.6.28-rc8Zachary Amsden
VMI initialiation can relocate the fixmap, causing early_ioremap to malfunction if it is initialized before the relocation. To fix this, VMI activation is split into two phases; the detection, which must happen before setting up ioremap, and the activation, which must happen after parsing early boot parameters. This fixes a crash on boot when VMI is enabled under VMware. Signed-off-by: Zachary Amsden <zach@vmware.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-12x86: hardirq: introduce inc_irq_stat()Hiroshi Shimamoto
Impact: cleanup Introduce inc_irq_stat() macro and unify irq_stat accounting code. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>