summaryrefslogtreecommitdiff
path: root/arch/x86/kernel
AgeCommit message (Collapse)Author
2009-01-27x86: move 64-bit NUMA codeBrian Gerst
Impact: Code movement, no functional change. Move the 64-bit NUMA code from setup_percpu.c to numa_64.c Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-27x86: merge setup_per_cpu_maps() into setup_per_cpu_areas()Brian Gerst
Impact: minor optimization Eliminates the need for two loops over possible cpus. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-26Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debugobjects: add and use INIT_WORK_ON_STACK rcu: remove duplicate CONFIG_RCU_CPU_STALL_DETECTOR relay: fix lock imbalance in relay_late_setup_files oprofile: fix uninitialized use of struct op_entry rcu: move Kconfig menu softlock: fix false panic which can occur if softlockup_thresh is reduced rcu: add __cpuinit to rcu_init_percpu_data()
2009-01-26Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: hrtimers: fix inconsistent lock state on resume in hres_timers_resume time-sched.c: tick_nohz_update_jiffies should be static locking, hpet: annotate false positive warning kernel/fork.c: unused variable 'ret' itimers: remove the per-cpu-ish-ness
2009-01-26Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (29 commits) xen: unitialised return value in xenbus_write_transaction x86: fix section mismatch warning x86: unmask CPUID levels on Intel CPUs, fix x86: work around PAGE_KERNEL_WC not getting WC in iomap_atomic_prot_pfn. x86: use standard PIT frequency xen: handle highmem pages correctly when shrinking a domain x86, mm: fix pte_free() xen: actually release memory when shrinking domain x86: unmask CPUID levels on Intel CPUs x86: add MSR_IA32_MISC_ENABLE bits to <asm/msr-index.h> x86: fix PTE corruption issue while mapping RAM using /dev/mem x86: mtrr fix debug boot parameter x86: fix page attribute corruption with cpa() Revert "x86: signal: change type of paramter for sys_rt_sigreturn()" x86: use early clobbers in usercopy*.c x86: remove kernel_physical_mapping_init() from init section fix: crash: IP: __bitmap_intersects+0x48/0x73 cpufreq: use work_on_cpu in acpi-cpufreq.c for drv_read and drv_write work_on_cpu: Use our own workqueue. work_on_cpu: don't try to get_online_cpus() in work_on_cpu. ...
2009-01-26x86: correct the CPUID pattern for MSR_IA32_MISC_ENABLE availabilityH. Peter Anvin
Impact: re-enable CPUID unmasking on affected processors As far as I am capable of discerning from the documentation, MSR_IA32_MISC_ENABLE should be available for all family 0xf CPUs, as well as family 6 for model >= 0xd (newer Pentium M). The documentation on this isn't ideal, so we need to be on the lookout for errors, still. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-01-26x86: fix section mismatch warningRakib Mullick
Here function vmi_activate calls a init function activate_vmi , which causes the following section mismatch warnings: LD arch/x86/kernel/built-in.o WARNING: arch/x86/kernel/built-in.o(.text+0x13ba9): Section mismatch in reference from the function vmi_activate() to the function .init.text:vmi_time_init() The function vmi_activate() references the function __init vmi_time_init(). This is often because vmi_activate lacks a __init annotation or the annotation of vmi_time_init is wrong. WARNING: arch/x86/kernel/built-in.o(.text+0x13bd1): Section mismatch in reference from the function vmi_activate() to the function .devinit.text:vmi_time_bsp_init() The function vmi_activate() references the function __devinit vmi_time_bsp_init(). This is often because vmi_activate lacks a __devinit annotation or the annotation of vmi_time_bsp_init is wrong. WARNING: arch/x86/kernel/built-in.o(.text+0x13bdb): Section mismatch in reference from the function vmi_activate() to the function .devinit.text:vmi_time_ap_init() The function vmi_activate() references the function __devinit vmi_time_ap_init(). This is often because vmi_activate lacks a __devinit annotation or the annotation of vmi_time_ap_init is wrong. Fix it by marking vmi_activate() as __init too. Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-26x86: improve early fault/irq printoutIngo Molnar
Impact: add a stack dump to early IRQs/faults Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-26x86, debug: remove early_printk() #ifdefs from head_32.SIngo Molnar
Impact: cleanup Remove such constructs: #ifdef CONFIG_EARLY_PRINTK call early_printk #else call printk #endif Not only are they ugly, they are also pointless: a call to printk() maps to early_printk during early bootup anyway, if CONFIG_EARLY_PRINTK is enabled. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-26x86: unmask CPUID levels on Intel CPUs, fixIngo Molnar
Impact: fix boot hang on pre-model-15 Intel CPUs rdmsrl_safe() does not work in very early bootup code yet, because we dont have the pagefault handler installed yet so exception section does not get parsed. rdmsr_safe() will just crash and hang the bootup. So limit the MSR_IA32_MISC_ENABLE MSR read to those CPU types that support it. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-23x86: filter CPU features dependent on unavailable CPUID levelsH. Peter Anvin
Impact: Fixes potential crashes on misconfigured systems. Some CPU features require specific CPUID levels to be available in order to function, as they contain information about the operation of a specific feature. However, some BIOSes and virtualization software provide the ability to mask CPUID levels in order to support legacy operating systems. We try to enable such CPUID levels when we know how to do it, but for the remaining cases, filter out such CPU features when there is no way for us to support them. Do this in one place, in the CPUID code, with a table-driven approach. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-01-23x86: handle PAT more like other CPU featuresH. Peter Anvin
Impact: Cleanup When PAT was originally introduced, it was handled specially for a few reasons: - PAT bugs are hard to track down, so we wanted to maintain a whitelist of CPUs. - The i386 and x86-64 CPUID code was not yet unified. Both of these are now obsolete, so handle PAT like any other features, including ordinary feature blacklisting due to known bugs. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-01-23x86: signal: use {get|put}_user_try and catchHiroshi Shimamoto
Impact: use new framework Use {get|put}_user_try, catch, and _ex in arch/x86/kernel/signal.c. Note: this patch contains "WARNING: line over 80 characters", because when introducing new block I insert an indent to avoid mistakes by edit. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-01-23x86: remove include of apic.h from hardirq_64.hBrian Gerst
Impact: cleanup APIC definitions aren't needed here. Remove the include and fix up the fallout. tj: added include to mce_intel_64.c. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-23x86: remove idle_timestamp from 32bit irq_cpustat_tBrian Gerst
Impact: bogus irq_cpustat field removed idle_timestamp is left over from the removed irqbalance code. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-22x86/pvops: remove pte_flags pvopJeremy Fitzhardinge
pte_flags() was introduced as a new pvop in order to extract just the flags portion of a pte, which is a potentially cheaper operation than extracting the page number as well. It turns out this operation is not needed, because simply using a mask to extract the flags from a pte is sufficient for all current users. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-22x86, ds, bts: cleanup/fix DS configurationMarkus Metzger
Cleanup the cpuid check for DS configuration. This also fixes a Corei7 CPUID enumeration bug. Signed-off-by: Markus Metzger <markus.t.metzger@intel.com> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-22debugobjects: add and use INIT_WORK_ON_STACKThomas Gleixner
Impact: Fix debugobjects warning debugobject enabled kernels spit out a warning in hpet code due to a workqueue which is initialized on stack. Add INIT_WORK_ON_STACK() which calls init_timer_on_stack() and use it in hpet. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-01-22x86: unmask CPUID levels on Intel CPUsH. Peter Anvin
Impact: Fixes crashes with misconfigured BIOSes on XSAVE hardware Avuton Olrich reported early boot crashes with v2.6.28 and bisected it down to dc1e35c6e95e8923cf1d3510438b63c600fee1e2 ("x86, xsave: enable xsave/xrstor on cpus with xsave support"). If the CPUID limit bit in MSR_IA32_MISC_ENABLE is set, clear it to make all CPUID information available. This is required for some features to work, in particular XSAVE. Reported-and-bisected-by: Avuton Olrich <avuton@gmail.com> Tested-by: Avuton Olrich <avuton@gmail.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2009-01-21x86: make UV support configurableNick Piggin
Make X86 SGI Ultraviolet support configurable. Saves about 13K of text size on my modest config. text data bss dec hex filename 6770537 1158680 694356 8623573 8395d5 vmlinux 6757492 1157664 694228 8609384 835e68 vmlinux.nouv Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-21x86: mtrr fix debug boot parameterThomas Renninger
while looking at: http://bugzilla.kernel.org/show_bug.cgi?id=11541 I realized that the mtrr.show param cannot work, because the code is processed much too early. This patch: - Declares mtrr.show as early_param - Stays consistent with the previous param (which I doubt that it ever worked), so mtrr.show=1 would still work - Declares mtrr_show as initdata Signed-off-by: Thomas Renninger <trenn@suse.de> Acked-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-21Merge branch 'x86/mm' into core/percpuIngo Molnar
Conflicts: arch/x86/mm/fault.c
2009-01-21x86, mm: move tlb.c to arch/x86/mm/Ingo Molnar
Impact: cleanup Now that it's unified, move the (SMP) TLB flushing code from arch/x86/kernel/ to arch/x86/mm/, where it belongs logically. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-21Merge branch 'cpus4096' into core/percpuIngo Molnar
Conflicts: arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c arch/x86/kernel/tlb_32.c Merge it here because both the cpumask changes and the ongoing percpu work is touching the TLB code. The percpu changes take precedence, as they eliminate tlb_32.c altogether. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-21Revert "x86: signal: change type of paramter for sys_rt_sigreturn()"Ingo Molnar
This reverts commit 4217458dafaa57d8e26a46f5d05ab8c53cf64191. Justin Madru bisected this commit, it was causing weird Firefox crashes. The reason is that GCC mis-optimizes (re-uses) the on-stack parameters of the calling frame, which corrupts the syscall return pt_regs state and thus corrupts user-space register state. So we go back to the slightly less clean but more optimization-safe method of getting to pt_regs. Also add a comment to explain this. Resolves: http://bugzilla.kernel.org/show_bug.cgi?id=12505 Reported-and-bisected-by: Justin Madru <jdm64@gawab.com> Tested-by: Justin Madru <jdm64@gawab.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-21x86: rename tlb_64.c to tlb.cTejun Heo
Impact: file rename tlb_64.c is now the tlb code for both 32 and 64. Rename it to tlb.c. Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-21x86: make x86_32 use tlb_64.cTejun Heo
Impact: less contention when issuing invalidate IPI, cleanup Make x86_32 use the same tlb code as 64bit. The 64bit code uses multiple IPI vectors for tlb shootdown to reduce contention. This patch makes x86_32 allocate the same 8 IPIs as x86_64 and share the code paths. Note that the usage of asmlinkage is inconsistent for x86_32 and 64 and calls for further cleanup. This has been noted with a FIXME comment in tlb_64.c. Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-21x86: prepare for tlb mergeTejun Heo
Impact: clean up, ipi vector number reordering for x86_32 Make the following changes to prepare for tlb merge. * reorder x86_32 ip vectors * adjust tlb_32.c and tlb_64.c such that their logics coincide exactly - on spurious invalidate ipi, tlb_32 acks the irq - tlb_64 now has proper memory barriers around clearing flush_cpumask (no change in generated code) * unexport flush_tlb_page from tlb_32.c, there's no user * use unsigned int for cpu id * drop unnecessary includes from tlb_64.c Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-21x86: uv cleanupTejun Heo
Impact: cleanup Make the following uv related cleanups. * collect visible uv related definitions and interfaces into uv/uv.h and use it. this cleans up the messy situation where on 64bit, uv is defined properly, on 32bit generic it's dummy and on the rest undefined. after this clean up, uv is defined on 64 and dummy on 32. * update uv_flush_tlb_others() such that it takes cpumask of to-be-flushed cpus as argument, instead of that minus self, and returns yet-to-be-flushed cpumask, instead of modifying the passed in parameter. this interface change will ease dummy implementation of uv_flush_tlb_others() and makes uv tlb flush related stuff defined in tlb_uv proper. Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-21x86: merge irq_regs.hBrian Gerst
Impact: cleanup, better irq_regs code generation for x86_64 Make 64-bit use the same optimizations as 32-bit. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-21x86: set %fs to __KERNEL_PERCPU unconditionally for x86_32Brian Gerst
Impact: cleanup %fs is currently set to __KERNEL_DS at boot, and conditionally switched to __KERNEL_PERCPU for secondary cpus. Instead, initialize GDT_ENTRY_PERCPU to the same attributes as GDT_ENTRY_KERNEL_DS and set %fs to __KERNEL_PERCPU unconditionally. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-21x86: clean up gdt_page definitionBrian Gerst
Impact: cleanup && more compact percpu area layout with future changes Move 64-bit GDT to page-aligned section and clean up comment formatting. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-20x86: remove byte locksJiri Kosina
Impact: cleanup Remove byte locks implementation, which was introduced by Jeremy in 8efcbab6 ("paravirt: introduce a "lock-byte" spinlock implementation"), but turned out to be dead code that is not used by any in-kernel virtualization guest (Xen uses its own variant of spinlocks implementation and KVM is not planning to move to byte locks). Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-20Merge commit 'v2.6.29-rc2' into x86/mmIngo Molnar
2009-01-20x86, cpumask: fix tlb flush raceIngo Molnar
Impact: fix bootup crash The cpumask is now passed in as a reference to mm->cpu_vm_mask, not on the stack - hence it is not constant anymore during the TLB flush. That way it could race and some static sanity checks would trigger: [ 238.154287] ------------[ cut here ]------------ [ 238.156039] kernel BUG at arch/x86/kernel/tlb_32.c:130! [ 238.156039] invalid opcode: 0000 [#1] SMP [ 238.156039] last sysfs file: /sys/class/net/eth2/address [ 238.156039] Modules linked in: [ 238.156039] [ 238.156039] Pid: 6493, comm: ifup-eth Not tainted (2.6.29-rc2-tip #1) P4DC6 [ 238.156039] EIP: 0060:[<c0118f87>] EFLAGS: 00010202 CPU: 2 [ 238.156039] EIP is at native_flush_tlb_others+0x35/0x158 [ 238.156039] EAX: c0ef972c EBX: f6143301 ECX: 00000000 EDX: 00000000 [ 238.156039] ESI: f61433a8 EDI: f6143200 EBP: f34f3e00 ESP: f34f3df0 [ 238.156039] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 [ 238.156039] Process ifup-eth (pid: 6493, ti=f34f2000 task=f399ab00 task.ti=f34f2000) [ 238.156039] Stack: [ 238.156039] ffffffff f61433a8 ffffffff f6143200 f34f3e18 c0118e9c 00000000 f6143200 [ 238.156039] f61433a8 f5bec738 f34f3e28 c0119435 c2b5b830 f6143200 f34f3e34 c01c2dc3 [ 238.156039] bffd9000 f34f3e60 c01c3051 00000000 ffffffff f34f3e4c 00000000 00000071 [ 238.156039] Call Trace: [ 238.156039] [<c0118e9c>] ? flush_tlb_others+0x52/0x5b [ 238.156039] [<c0119435>] ? flush_tlb_mm+0x7f/0x8b [ 238.156039] [<c01c2dc3>] ? tlb_finish_mmu+0x2d/0x55 [ 238.156039] [<c01c3051>] ? exit_mmap+0x124/0x170 [ 238.156039] [<c013e965>] ? mmput+0x40/0xf5 [ 238.156039] [<c01e4788>] ? flush_old_exec+0x640/0x94b [ 238.156039] [<c01ddb4e>] ? fsnotify_access+0x37/0x39 [ 238.156039] [<c01e3435>] ? kernel_read+0x39/0x4b [ 238.156039] [<c021bc8a>] ? load_elf_binary+0x4a1/0x11bb [ 238.156039] [<c01c0af9>] ? might_fault+0x51/0x9c [ 238.156039] [<c010a2cc>] ? paravirt_read_tsc+0x20/0x4f [ 238.156039] [<c010a406>] ? native_sched_clock+0x5d/0x60 [ 238.156039] [<c01e2fda>] ? search_binary_handler+0xab/0x2c4 [ 238.156039] [<c021b7e9>] ? load_elf_binary+0x0/0x11bb [ 238.156039] [<c04ae9a5>] ? _raw_read_unlock+0x21/0x46 [ 238.156039] [<c021b7e9>] ? load_elf_binary+0x0/0x11bb [ 238.156039] [<c01e2fe1>] ? search_binary_handler+0xb2/0x2c4 [ 238.156039] [<c01e4076>] ? do_execve+0x21c/0x2ee [ 238.156039] [<c01029b7>] ? sys_execve+0x51/0x8c [ 238.156039] [<c0103eaf>] ? sysenter_do_call+0x12/0x43 Fix it by not assuming that the cpumask is constant. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-20Merge branch 'tj-percpu' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc into core/percpu
2009-01-20x86: remove pda.hBrian Gerst
Impact: cleanup Signed-off-by: Brian Gerst <brgerst@gmail.com>
2009-01-20x86: move stack_canary into irq_stackBrian Gerst
Impact: x86_64 percpu area layout change, irq_stack now at the beginning Now that the PDA is empty except for the stack canary, it can be removed. The irqstack is moved to the start of the per-cpu section. If the stack protector is enabled, the canary overlaps the bottom 48 bytes of the irqstack. tj: * updated subject * dropped asm relocation of irq_stack_ptr * updated comments a bit * rebased on top of stack canary changes Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-20x86: rework __per_cpu_load adjustmentsBrian Gerst
Impact: cleanup Use cpu_number to determine if the adjustment is necessary. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-20x86: remove pda_init()Brian Gerst
Impact: cleanup Copy the code to cpu_init() to satisfy the requirement that the cpu be reinitialized. Remove all other calls, since the segments are already initialized in head_64.S. Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-20x86: cleanup stack protectorTejun Heo
Impact: cleanup Make the following cleanups. * remove duplicate comment from boot_init_stack_canary() which fits better in the other place - cpu_idle(). * move stack_canary offset check from __switch_to() to boot_init_stack_canary(). Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-20fix: crash: IP: __bitmap_intersects+0x48/0x73Ingo Molnar
-tip testing found this crash: > [ 35.258515] calling acpi_cpufreq_init+0x0/0x127 @ 1 > [ 35.264127] BUG: unable to handle kernel NULL pointer dereference at (null) > [ 35.267554] IP: [<ffffffff80478092>] __bitmap_intersects+0x48/0x73 > [ 35.267554] PGD 0 > [ 35.267554] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c is still broken: there's no allocation of the variable mask, so we pass in an uninitialized cmd.mask field to drv_read(), which then passes it to the scheduler which then crashes ... Switch it over to the much simpler constant-cpumask-pointers approach. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-19cpufreq: use work_on_cpu in acpi-cpufreq.c for drv_read and drv_writeMike Travis
Impact: use new work_on_cpu function to reduce stack usage Replace the saving of current->cpus_allowed and set_cpus_allowed_ptr() with a work_on_cpu function for drv_read() and drv_write(). Basically converts do_drv_{read,write} into "work_on_cpu" functions that are now called by drv_read and drv_write. Note: This patch basically reverts 50c668d6 which reverted 7503bfba, now that the work_on_cpu() function is more stable. Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Tested-by: Dieter Ries <clip2@gmx.de> Tested-by: Maciej Rutecki <maciej.rutecki@gmail.com> Cc: Dave Jones <davej@redhat.com> Cc: <cpufreq@vger.kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-19x86: fully honor "nolapic", fixIngo Molnar
Impact: build fix Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-18x86: Remove never-called arch_setup_msi_irq()Michael Ellerman
Since commit 75c46fa, "x64, x2apic/intr-remap: MSI and MSI-X support for interrupt remapping infrastructure", x86 has had an implementation of arch_setup_msi_irqs(). That implementation does not call arch_setup_msi_irq(), instead it calls setup_irq(). No other x86 code calls arch_setup_msi_irq(). That leaves only arch_setup_msi_irqs() in drivers/pci/msi.c, but that routine is overridden by the x86 version of arch_setup_msi_irqs(). So arch_setup_msi_irq() is dead code, remove it. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-01-18x86: fix section mismatch warnings in kernel/setup_percpu.cLeonardo Potenza
The function setup_cpu_local_masks() has been marked __init, in order to remove the following section mismatch messages: WARNING: vmlinux.o(.text+0x3c2c7): Section mismatch in reference from the function setup_cpu_local_masks() to the function .init.text:alloc_bootmem_cpumask_var() The function setup_cpu_local_masks() references the function __init alloc_bootmem_cpumask_var(). This is often because setup_cpu_local_masks lacks a __init annotation or the annotation of alloc_bootmem_cpumask_var is wrong. WARNING: vmlinux.o(.text+0x3c2d3): Section mismatch in reference from the function setup_cpu_local_masks() to the function .init.text:alloc_bootmem_cpumask_var() The function setup_cpu_local_masks() references the function __init alloc_bootmem_cpumask_var(). This is often because setup_cpu_local_masks lacks a __init annotation or the annotation of alloc_bootmem_cpumask_var is wrong. WARNING: vmlinux.o(.text+0x3c2df): Section mismatch in reference from the function setup_cpu_local_masks() to the function .init.text:alloc_bootmem_cpumask_var() The function setup_cpu_local_masks() references the function __init alloc_bootmem_cpumask_var(). This is often because setup_cpu_local_masks lacks a __init annotation or the annotation of alloc_bootmem_cpumask_var is wrong. WARNING: vmlinux.o(.text+0x3c2eb): Section mismatch in reference from the function setup_cpu_local_masks() to the function .init.text:alloc_bootmem_cpumask_var() The function setup_cpu_local_masks() references the function __init alloc_bootmem_cpumask_var(). This is often because setup_cpu_local_masks lacks a __init annotation or the annotation of alloc_bootmem_cpumask_var is wrong. Signed-off-by: Leonardo Potenza <lpotenza@inwind.it> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-18x86: put trigger in to detect mismatched apic versionsMike Travis
Impact: add debug warning Fire off one message if two apic's discovered with different apic versions. (this code is only called during CPU init) The goal of this is to pave the way of the removal of the apic_version[] array. We dont expect any apic version incompatibilities in the x86 landscape of systems [if so we dont handle them very well and probably never will handle deep apic version assymetries well], but it's prudent to have a debug check for one kernel cycle nevertheless. Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-18Merge branch 'core/percpu' into stackprotectorIngo Molnar
Conflicts: arch/x86/include/asm/pda.h arch/x86/include/asm/system.h Also, moved include/asm-x86/stackprotector.h to arch/x86/include/asm. Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-19x86-64: Move isidle from PDA to per-cpu.Brian Gerst
tj: s/isidle/is_idle/ Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2009-01-19x86-64: Move nodenumber from PDA to per-cpu.Brian Gerst
tj: * s/nodenumber/node_number/ * removed now unused pda variable from pda_init() Signed-off-by: Brian Gerst <brgerst@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
generated by cgit (git 2.34.1) at 2025-09-17 05:03:05 +0000