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2009-02-19x86: compressed head_32 - use ENTRY,ENDPROC macrosCyrill Gorcunov
Impact: clenaup Linker script will put startup_32 at predefined address so using startup_32 will not bloat the code size. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-19x86: compressed head_64 - use ENTRY,ENDPROC macrosCyrill Gorcunov
Impact: clenaup Linker script will put startup_32 at predefined address so using ENTRY will not bloat the code size. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-19x86: pmjump - use GLOBAL,ENDPROC macrosCyrill Gorcunov
Impact: cleanup We are in setup stage so we use GLOBAL instead of ENTRY and do not increase code size. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-19x86: copy.S - use GLOBAL,ENDPROC macrosCyrill Gorcunov
Impact: cleanup Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-19x86: linkage - get rid of _X86 macrosCyrill Gorcunov
Impact: cleanup There was an attempt to bring build-time checking for missed ENTRY_X86/END_X86 and KPROBE... pairs. Using them will add messy in code. Get just rid of them. This commit could be easily restored if the need appear in future. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-19x86: asm linkage - introduce GLOBAL macroCyrill Gorcunov
If the code is time critical and this entry is called from other places we use ENTRY to have it globally defined and especially aligned. Contrary we have some snippets which are size critical. So we use plane ".globl name; name:" directive. Introduce GLOBAL macro for this. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-17x86: remove stale arch/x86/include/asm/page_64.h.rej fileIngo Molnar
Introduced by: 51c78eb: x86: create _types.h counterparts for page*.h Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-17Merge branches 'x86/acpi', 'x86/apic', 'x86/cpudetect', 'x86/headers', ↵Ingo Molnar
'x86/paravirt', 'x86/urgent' and 'x86/xen'; commit 'v2.6.29-rc5' into x86/core
2009-02-16x86: make APIC_init_uniprocessor() more like smp_prepare_cpus()Yinghai Lu
Impact: cleanup 1. move localise_nmi_watchdog() later 2. change setup_boot_APIC_clock() to setup_boot_clock() for 64-bit Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-16x86: pre init pirq_entries[]Yinghai Lu
Impact: cleanup set default value early - this allows the removal of a number of dynamic initialization codepaths, and an #ifdef. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-16x86, xen: do multicall callbacks with interrupts disabledJeremy Fitzhardinge
We can't call the callbacks after enabling interrupts, as we may get a nested multicall call, which would cause a great deal of havok. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-16x86, xen: degrade BUG to WARN when multicall failsJeremy Fitzhardinge
If one of the components of a multicall fails, WARN rather than BUG, to help with debugging. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-16x86, xen: record and display initiator of each multicall when debuggingIan Campbell
Store the caller for each multicall so we can report it on failure. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-16x86, xen: short-circuit tests for dom0Jeremy Fitzhardinge
When testing for a dom0/initial/privileged domain, make sure the predicate evaluates to a compile-time 0 if CONFIG_XEN_DOM0 isn't enabled. This will make most of the dom0 code evaporate without much more effort. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-15x86: make 32bit to call enable_IO_APIC early like 64bitYinghai Lu
Impact: cleanup So we remove some #ifdefs. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-15x86, vm86: fix preemption bugThomas Gleixner
Commit 3d2a71a596bd9c761c8487a2178e95f8a61da083 ("x86, traps: converge do_debug handlers") changed the preemption disable logic of do_debug() so vm86_handle_trap() is called with preemption disabled resulting in: BUG: sleeping function called from invalid context at include/linux/kernel.h:155 in_atomic(): 1, irqs_disabled(): 0, pid: 3005, name: dosemu.bin Pid: 3005, comm: dosemu.bin Tainted: G W 2.6.29-rc1 #51 Call Trace: [<c050d669>] copy_to_user+0x33/0x108 [<c04181f4>] save_v86_state+0x65/0x149 [<c0418531>] handle_vm86_trap+0x20/0x8f [<c064e345>] do_debug+0x15b/0x1a4 [<c064df1f>] debug_stack_correct+0x27/0x2c [<c040365b>] sysenter_do_call+0x12/0x2f BUG: scheduling while atomic: dosemu.bin/3005/0x10000001 Restore the original calling convention and reenable preemption before calling handle_vm86_trap(). Reported-by: Michal Suchanek <hramrach@centrum.cz> Cc: stable@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-15x86: fix typo in filter_cpuid_features()Yinghai Lu
Impact: fix wrong disabling of cpu features an amd system got this strange output: CPU: CPU feature monitor disabled due to lack of CPUID level 0x5 but in /proc/cpuinfo I have: cpuid level : 5 on intel system: CPU: CPU feature monitor disabled due to lack of CPUID level 0x5 CPU: CPU feature dca disabled due to lack of CPUID level 0x9 but in /proc/cpuinfo i have: cpuid level : 11 Tt turns out there is a typo, and we should use level member in df. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-14x86, olpc: fix model detection without OFWChris Ball
Impact: fix "garbled display, laptop is unusable" bug Commit e51a1ac2dfca9ad869471e88f828281db7e810c0 ("x86, olpc: fix endian bug in openfirmware workaround") breaks model comparison on OLPC; the value 0xc2 needs to be scaled up by olpc_board(). The pre-patch version was wrong, but accidentally worked anyway (big-endian 0xc2 is big enough to satisfy all other board revisions, but little endian 0xc2 is not). Signed-off-by: Chris Ball <cjb@laptop.org> Cc: Andrew Morton <akpm@linux-foundation.org> Acked-by: Andres Salomon <dilinger@queued.net> Cc: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-13Merge branch 'core/header-fixes' into x86/headersIngo Molnar
Conflicts: arch/x86/include/asm/setup.h
2009-02-13x86: fix "__udivdi3" [drivers/scsi/aha1542.ko] undefinedJames Bottomley
Commit 976e8f677e42757e5586ea04a9ac8bb8ddaa037e ("x86: asm/io.h: unify virt_to_phys/phys_to_virt") changed the return of virt_to_phys from long to phys_addr_t which is unsigned long long on a PAE platform. So, I could suggest a fix below since isa addresses may never be above 32 bits. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-13x86, UV: set full apicid in uv_hub_send_ipiDimitri Sivanich
The uv_hub_send_ipi() function needs to set the full apicid in the UVH_IPI_INT mmr. Signed-off-by: Dimitri Sivanich <sivanich@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-13xen: fix xen_flush_tlb_othersIan Campbell
The commit commit 4595f9620cda8a1e973588e743cf5f8436dd20c6 Author: Rusty Russell <rusty@rustcorp.com.au> Date: Sat Jan 10 21:58:09 2009 -0800 x86: change flush_tlb_others to take a const struct cpumask causes xen_flush_tlb_others to allocate a multicall and then issue it without initializing it in the case where the cpumask is empty, leading to: [ 8.354898] 1 multicall(s) failed: cpu 1 [ 8.354921] Pid: 2213, comm: bootclean Not tainted 2.6.29-rc3-x86_32p-xenU-tip #135 [ 8.354937] Call Trace: [ 8.354955] [<c01036e3>] xen_mc_flush+0x133/0x1b0 [ 8.354971] [<c0105d2a>] ? xen_force_evtchn_callback+0x1a/0x30 [ 8.354988] [<c0105a60>] xen_flush_tlb_others+0xb0/0xd0 [ 8.355003] [<c0126643>] flush_tlb_page+0x53/0xa0 [ 8.355018] [<c0176a80>] do_wp_page+0x2a0/0x7c0 [ 8.355034] [<c0238f0a>] ? notify_remote_via_irq+0x3a/0x70 [ 8.355049] [<c0178950>] handle_mm_fault+0x7b0/0xa50 [ 8.355065] [<c0131a3e>] ? wake_up_new_task+0x8e/0xb0 [ 8.355079] [<c01337b5>] ? do_fork+0xe5/0x320 [ 8.355095] [<c0121919>] do_page_fault+0xe9/0x240 [ 8.355109] [<c0121830>] ? do_page_fault+0x0/0x240 [ 8.355125] [<c032457a>] error_code+0x72/0x78 [ 8.355139] call 1/1: op=2863311530 arg=[aaaaaaaa] result=-38 xen_flush_tlb_others+0x41/0xd0 Since empty cpumasks are rare and undoing an xen_mc_entry() is tricky just issue such requests normally. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-13x86 headers: protect page_32.h via __ASSEMBLY__Ingo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-13x86 headers: include page_types.h in pgtable_types.hIngo Molnar
To properly pick up details like PTE_FLAGS_MASK. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-13x86 headers: include linux/types.hIngo Molnar
To properly pick up types relied on by prototypes like 'bool'. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-13x86 headers: remove duplicate pud_large() definitionIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-13Merge branch 'x86/untangle2' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen into x86/headers Conflicts: arch/x86/include/asm/page.h arch/x86/include/asm/pgtable.h arch/x86/mach-voyager/voyager_smp.c arch/x86/mm/fault.c
2009-02-13Merge branches 'x86/paravirt', 'x86/pat', 'x86/setup-v2', 'x86/subarch', ↵Ingo Molnar
'x86/uaccess' and 'x86/urgent' into x86/core
2009-02-13Merge branch 'x86/mm' into x86/coreIngo Molnar
2009-02-13Merge branches 'x86/acpi', 'x86/asm', 'x86/cpudetect', 'x86/crashdump', ↵Ingo Molnar
'x86/debug', 'x86/defconfig', 'x86/doc', 'x86/header-fixes', 'x86/headers' and 'x86/minor-fixes' into x86/core
2009-02-13Merge branch 'x86/cleanups' into x86/coreIngo Molnar
2009-02-13Merge branch 'core/percpu' into x86/coreIngo Molnar
2009-02-13Merge branch 'linus' into x86/apicIngo Molnar
Conflicts: arch/x86/kernel/acpi/boot.c arch/x86/mm/fault.c
2009-02-13x86, hpet: fix for LS21 + HPET = boot hangjohn stultz
Between 2.6.23 and 2.6.24-rc1 a change was made that broke IBM LS21 systems that had the HPET enabled in the BIOS, resulting in boot hangs for x86_64. Specifically commit b8ce33590687888ebb900d09557b8807c4539022, which merges the i386 and x86_64 HPET code. Prior to this commit, when we setup the HPET timers in x86_64, we did the following: hpet_writel(HPET_TN_ENABLE | HPET_TN_PERIODIC | HPET_TN_SETVAL | HPET_TN_32BIT, HPET_T0_CFG); However after the i386/x86_64 HPET merge, we do the following: cfg = hpet_readl(HPET_Tn_CFG(timer)); cfg |= HPET_TN_ENABLE | HPET_TN_PERIODIC | HPET_TN_SETVAL | HPET_TN_32BIT; hpet_writel(cfg, HPET_Tn_CFG(timer)); However on LS21s with HPET enabled in the BIOS, the HPET_T0_CFG register boots with Level triggered interrupts (HPET_TN_LEVEL) enabled. This causes the periodic interrupt to be not so periodic, and that results in the boot time hang I reported earlier in the delay calibration. My fix: Always disable HPET_TN_LEVEL when setting up periodic mode. Signed-off-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-12x86: CPA avoid repeated lazy mmu flushThomas Gleixner
Impact: Flush the lazy MMU only once Pending mmu updates only need to be flushed once to bring the in-memory pagetable state up to date. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-02-12x86: warn if arch_flush_lazy_mmu_cpu is called in preemptible contextThomas Gleixner
Impact: Catch cases where lazy MMU state is active in a preemtible context arch_flush_lazy_mmu_cpu() has been changed to disable preemption so the checks in enter/leave will never trigger. Put the preemtible() check into arch_flush_lazy_mmu_cpu() to catch such cases. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-02-12x86/paravirt: make arch_flush_lazy_mmu/cpu disable preemptionJeremy Fitzhardinge
Impact: avoid access to percpu vars in preempible context They are intended to be used whenever there's the possibility that there's some stale state which is going to be overwritten with a queued update, or to force a state change when we may be in lazy mode. Either way, we could end up calling it with preemption enabled, so wrap the functions in their own little preempt-disable section so they can be safely called in any context (though preemption should never be enabled if we're actually in a lazy state). (Move out of line to avoid #include dependencies.) Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-02-12x86, 32-bit: refactor find_low_pfn_range()Ingo Molnar
Impact: cleanup Make the max_low_pfn logic a bit more standard between lowmem_pfn_init() and highmem_pfn_init(). Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-12x86, 32-bit: clean up find_low_pfn_range()Ingo Molnar
Impact: cleanup Split find_low_pfn_range() into two functions: - lowmem_pfn_init() - highmem_pfn_init() The former gets called if all of RAM fits into lowmem, otherwise we call highmem_pfn_init(). Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-12x86: fix warning in find_low_pfn_range()Ingo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-12x86, defconfig: turn off CONFIG_SCSI_ISCSI_ATTRS=yIngo Molnar
It was enabled by mistake - iscsi is not included in a typical default PC, and no other architecture has it built-in (=y) either. Turn it off. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-12x86, defconfig: turn off CONFIG_ENABLE_WARN_DEPRECATEDIngo Molnar
deprecation warnings have become rather noisy lately: drivers/i2c/i2c-core.c: In function ‘i2c_new_device’: drivers/i2c/i2c-core.c:283: warning: ‘i2c_attach_client’ is deprecated (declared at include/linux/i2c.h:434) drivers/i2c/i2c-core.c: In function ‘i2c_del_adapter’: drivers/i2c/i2c-core.c:646: warning: ‘detach_client’ is deprecated (declared at include/linux/i2c.h:154) drivers/i2c/i2c-core.c: In function ‘i2c_register_driver’: drivers/i2c/i2c-core.c:713: warning: ‘detach_client’ is deprecated (declared at include/linux/i2c.h:154) drivers/i2c/i2c-core.c: In function ‘__detach_adapter’: drivers/i2c/i2c-core.c:780: warning: ‘detach_client’ is deprecated (declared at include/linux/i2c.h:154) drivers/i2c/i2c-core.c: At top level: drivers/i2c/i2c-core.c:876: warning: ‘i2c_attach_client’ is deprecated (declared at drivers/i2c/i2c-core.c:827) drivers/i2c/i2c-core.c:876: warning: ‘i2c_attach_client’ is deprecated (declared at drivers/i2c/i2c-core.c:827) drivers/i2c/i2c-core.c:904: warning: ‘i2c_detach_client’ is deprecated (declared at drivers/i2c/i2c-core.c:879) drivers/i2c/i2c-core.c:904: warning: ‘i2c_detach_client’ is deprecated (declared at drivers/i2c/i2c-core.c:879) So turn it off for now - these reminders can obscure critical warnings. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-12x86, defconfig: update the 64-bit defconfigIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-12x86, defconfig: update the 32-bit defconfigIngo Molnar
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-12x86, pat: fix warn_on_once() while mapping 0-1MB range with /dev/memSuresh Siddha
Jeff Mahoney reported: > With Suse's hwinfo tool, on -tip: > WARNING: at arch/x86/mm/pat.c:637 reserve_pfn_range+0x5b/0x26d() reserve_pfn_range() is not tracking the memory range below 1MB as non-RAM and as such is inconsistent with similar checks in reserve_memtype() and free_memtype() Rename the pagerange_is_ram() to pat_pagerange_is_ram() and add the "track legacy 1MB region as non RAM" condition. And also, fix reserve_pfn_range() to return -EINVAL, when the pfn range is RAM. This is to be consistent with this API design. Reported-and-tested-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-12x86/cpa: make sure cpa is safe to call in lazy mmu modeJeremy Fitzhardinge
Impact: fix race leading to crash under KVM and Xen The CPA code may be called while we're in lazy mmu update mode - for example, when using DEBUG_PAGE_ALLOC and doing a slab allocation in an interrupt handler which interrupted a lazy mmu update. In this case, the in-memory pagetable state may be out of date due to pending queued updates. We need to flush any pending updates before inspecting the page table. Similarly, we must explicitly flush any modifications CPA may have made (which comes down to flushing queued operations when flushing the TLB). Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: Marcelo Tosatti <mtosatti@redhat.com> Cc: Stable Kernel <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-11x86: UV: fix header struct usageRandy Dunlap
Impact: Fixes warning Fix uv.h struct usage: arch/x86/include/asm/uv/uv.h:16: warning: 'struct mm_struct' declared inside parameter list arch/x86/include/asm/uv/uv.h:16: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-02-11x86: merge sys_rt_sigreturn between 32 and 64 bitsH. Peter Anvin
Impact: cleanup With the recent changes in the 32-bit code to make system calls which use struct pt_regs take a pointer, sys_rt_sigreturn() have become identical between 32 and 64 bits, and both are empty wrappers around do_rt_sigreturn(). Remove both wrappers and rename both to sys_rt_sigreturn(). Cc: Brian Gerst <brgerst@gmail.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-02-11x86: move pte types into pgtable*.hJeremy Fitzhardinge
pgtable*.h is intended for definitions relating to actual pagetables and their entries, so move all the definitions for (pte|pmd|pud|pgd)(val)?_t to the appropriate pgtable*.h headers. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-02-11x86: define pud_flags and pud_large properly to allow non-PAE buildsJeremy Fitzhardinge
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