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1b1d925818
linux/arch/x86/kernel
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Jan Beulich 1b1d925818 x86-64: Modify copy_user_generic() alternatives mechanism 
In order to avoid unnecessary chains of branches, rather than
implementing copy_user_generic() as a function consisting of
just a single (possibly patched) branch, instead properly deal
with patching call instructions in the alternative instructions
framework, and move the patching into the callers.

As a follow-on, one could also introduce something like
__EXPORT_SYMBOL_ALT() to avoid patching call sites in modules.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <4B2BB8180200007800026AE7@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-12-30 11:57:31 +01:00
..
acpi ACPI: processor: unify arch_acpi_processor_cleanup_pdc 2009-12-22 03:24:14 -05:00
apic Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-19 09:48:14 -08:00
cpu Merge branch 'misc-2.6.33' into release 2009-12-24 01:19:00 -05:00
.gitignore
alternative.c x86-64: Modify copy_user_generic() alternatives mechanism 2009-12-30 11:57:31 +01:00
amd_iommu_init.c Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-11 20:47:59 -08:00
amd_iommu.c iommu-helper: use bitmap library 2009-12-16 07:20:18 -08:00
aperture_64.c x86: Gart: fix breakage due to IOMMU initialization cleanup 2009-12-14 08:57:40 +01:00
apm_32.c x86: Remove BKL from apm_32 2009-10-14 17:04:48 +02:00
asm-offsets_32.c lguest: optimize by coding restore_flags and irq_enable in assembler. 2009-06-12 22:27:03 +09:30
asm-offsets_64.c tracing: Define NR_syscalls for x86_64 2009-08-26 21:29:58 +02:00
asm-offsets.c
audit_64.c
bios_uv.c x86: uv: update XPC to handle updated BIOS interface 2009-12-16 07:20:14 -08:00
bootflag.c
check.c
cpuid.c x86, msr/cpuid: Register enough minors for the MSR and CPUID drivers 2009-12-15 15:13:07 -08:00
crash_dump_32.c x86: crash_dump: Fix non-pae kdump kernel memory accesses 2009-10-26 12:38:59 +01:00
crash_dump_64.c
crash.c x86: Use x86_platform for iommu_shutdown 2009-11-08 13:12:26 +01:00
doublefault_32.c x86: Use get_desc_base() 2009-07-19 18:27:51 +02:00
ds_selftest.c
ds_selftest.h
ds.c percpu: make percpu symbols in x86 unique 2009-10-29 22:34:14 +09:00
dumpstack_32.c perf events, x86/stacktrace: Make stack walking optional 2009-12-17 09:56:19 +01:00
dumpstack_64.c perf events, x86/stacktrace: Make stack walking optional 2009-12-17 09:56:19 +01:00
dumpstack.c perf events, x86/stacktrace: Fix performance/softlockup by providing a special frame pointer-only stack walker 2009-12-17 10:42:52 +01:00
dumpstack.h perf events, x86/stacktrace: Make stack walking optional 2009-12-17 09:56:19 +01:00
e820.c x86: Increase MAX_EARLY_RES; insufficient on 32-bit NUMA 2009-12-16 16:46:23 -08:00
early_printk.c x86: earlyprintk: Fix regression to handle serial,ttySn as 1 arg 2009-10-01 10:34:16 +02:00
early-quirks.c
efi_32.c
efi_64.c x86: Make 64-bit efi_ioremap use ioremap on MMIO regions 2009-08-03 13:34:25 -07:00
efi_stub_32.S
efi_stub_64.S
efi.c x86: Make EFI RTC function depend on 32bit again 2009-10-27 12:35:48 +01:00
entry_32.S x86, 32-bit: Use same regs as 64-bit for kernel_thread_helper 2009-12-10 15:55:36 -08:00
entry_64.S Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-16 12:02:37 -08:00
ftrace.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 13:27:33 -08:00
head32.c x86: Use find_e820() instead of hard coded trampoline address 2009-12-11 09:28:22 +01:00
head64.c x86: Use find_e820() instead of hard coded trampoline address 2009-12-11 09:28:22 +01:00
head_32.S x86-32: Use symbolic constants, safer CPUID when enabling EFER.NX 2009-11-16 13:44:56 -08:00
head_64.S Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 13:27:33 -08:00
head.c
hpet.c x86: hpet: Make WARN_ON understandable 2009-11-27 20:37:41 +01:00
hw_breakpoint.c hw-breakpoints: Use overflow handler instead of the event callback 2009-12-06 08:27:18 +01:00
i386_ksyms_32.c x86: Don't generate cmpxchg8b_emu if CONFIG_X86_CMPXCHG64=y 2009-10-01 08:42:24 +02:00
i387.c
i8237.c
i8253.c x86: Do not unregister PIT clocksource on PIT oneshot setup/shutdown 2009-08-21 21:13:37 +02:00
i8259.c
init_task.c Use new __init_task_data macro in arch init_task.c files. 2009-09-21 06:27:08 +02:00
io_delay.c
ioport.c x86-64, paravirt: Call set_iopl_mask() on 64 bits 2009-12-09 16:54:08 -08:00
irq_32.c x86: Unify fixup_irqs() for 32-bit and 64-bit kernels 2009-11-02 15:56:34 +01:00
irq_64.c x86: Unify fixup_irqs() for 32-bit and 64-bit kernels 2009-11-02 15:56:34 +01:00
irq.c genirq: Convert irq_desc.lock to raw_spinlock 2009-12-14 23:55:33 +01:00
irqinit.c x86: UV RTC: Rename generic_interrupt to x86_platform_ipi 2009-10-14 18:27:11 +02:00
k8.c
kdebugfs.c
kgdb.c kgdb,x86: do not set kgdb_single_step on x86 2009-12-11 08:43:18 -06:00
kprobes.c Merge branch 'for-next' into for-linus 2009-12-07 18:36:35 +01:00
kvm.c KVM guest: do not batch pte updates from interrupt context 2009-09-10 18:10:50 +03:00
kvmclock.c Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-18 14:05:47 -07:00
ldt.c cpumask: use mm_cpumask() wrapper: x86 2009-09-24 09:34:52 +09:30
machine_kexec_32.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 13:27:33 -08:00
machine_kexec_64.c hw-breakpoints: cleanup HW Breakpoint registers before kexec 2009-06-02 22:47:00 +02:00
Makefile cs5535: drop the Geode-specific MFGPT/GPIO code 2009-12-15 08:53:28 -08:00
mca_32.c
microcode_amd.c arch/x86/kernel/microcode*: Use pr_fmt() and remove duplicated KERN_ERR prefix 2009-12-09 08:25:57 +01:00
microcode_core.c Revert "x86, ucode-amd: Ensure ucode update on suspend/resume after CPU off/online cycle" 2009-12-23 15:04:53 -08:00
microcode_intel.c arch/x86/kernel/microcode*: Use pr_fmt() and remove duplicated KERN_ERR prefix 2009-12-09 08:25:57 +01:00
mmconf-fam10h_64.c
module.c module: cleanup FIXME comments about trimming exception table entries. 2009-06-12 21:47:05 +09:30
mpparse.c x86: Use find_e820() instead of hard coded trampoline address 2009-12-11 09:28:22 +01:00
mrst.c x86: Add Moorestown early detection 2009-08-31 11:09:40 +02:00
msr.c x86, msr/cpuid: Register enough minors for the MSR and CPUID drivers 2009-12-15 15:13:07 -08:00
olpc.c cs5535: move VSA2 checks into linux/cs5535.h 2009-12-15 08:53:28 -08:00
paravirt_patch_32.c
paravirt_patch_64.c
paravirt-spinlocks.c locking: Convert __raw_spin* functions to arch_spin* 2009-12-14 23:55:32 +01:00
paravirt.c Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-18 14:05:47 -07:00
pci-calgary_64.c iommu-helper: use bitmap library 2009-12-16 07:20:18 -08:00
pci-dma.c x86: Split swiotlb initialization into two stages 2009-12-15 13:01:57 +01:00
pci-gart_64.c iommu-helper: use bitmap library 2009-12-16 07:20:18 -08:00
pci-nommu.c x86: Kill bad_dma_address variable 2009-11-17 07:53:21 +01:00
pci-swiotlb.c x86: Split swiotlb initialization into two stages 2009-12-15 13:01:57 +01:00
pcspeaker.c
pmtimer_64.c
probe_roms_32.c
process_32.c Merge branch 'x86/asm' into x86/urgent 2009-12-15 20:33:28 +01:00
process_64.c Merge branch 'x86/asm' into x86/urgent 2009-12-15 20:33:28 +01:00
process.c Merge branch 'x86/asm' into x86/urgent 2009-12-15 20:33:28 +01:00
ptrace.c x86/ptrace: make genregs[32]_get/set more robust 2009-12-17 07:04:56 -08:00
pvclock.c x86: Fix warning in pvclock.c 2009-07-14 16:25:05 +02:00
quirks.c x86: AMD Northbridge: Verify NB's node is online 2009-11-16 15:43:05 +01:00
reboot_fixups_32.c cs5535: move the DIVIL MSR definition into linux/cs5535.h 2009-12-15 08:53:28 -08:00
reboot.c Merge branch 'linus' into x86/urgent 2009-12-07 13:14:18 +01:00
relocate_kernel_32.S
relocate_kernel_64.S
rtc.c Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-18 14:05:47 -07:00
scx200_32.c
setup_percpu.c x86: setup_percpu.c: Use pr_<level> and add pr_fmt(fmt) 2009-12-10 08:57:50 +01:00
setup.c x86: Use find_e820() instead of hard coded trampoline address 2009-12-11 09:28:22 +01:00
sfi.c SFI: remove unneeded includes 2009-09-15 15:08:40 -04:00
signal.c x86: Merge sys_sigaltstack 2009-12-09 16:28:59 -08:00
smp.c Revert "x86, timers: Check for pending timers after (device) interrupts" 2009-10-09 15:58:20 +02:00
smpboot.c x86: Limit the number of processor bootup messages 2009-12-11 15:16:00 -08:00
stacktrace.c perf events, x86/stacktrace: Make stack walking optional 2009-12-17 09:56:19 +01:00
step.c x86: Use get_desc_base() 2009-07-19 18:27:51 +02:00
sys_i386_32.c Unify sys_mmap* 2009-12-11 06:44:29 -05:00
sys_x86_64.c Unify sys_mmap* 2009-12-11 06:44:29 -05:00
syscall_64.c
syscall_table_32.S Unify sys_mmap* 2009-12-11 06:44:29 -05:00
tboot.c x86, intel_txt: clean up the impact on generic code, unbreak non-x86 2009-09-01 18:25:07 -07:00
tce_64.c
test_nx.c
test_rodata.c
time.c x86: fix kernel panic on 32 bits when profiling 2009-10-12 11:53:51 -07:00
tlb_uv.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 13:27:33 -08:00
tls.c
tls.h
topology.c
trampoline_32.S x86: cpuinit-annotate SMP boot trampolines properly 2009-09-20 20:23:37 +02:00
trampoline_64.S x86: Fix Suspend to RAM freeze on Acer Aspire 1511Lmi laptop 2009-10-12 18:06:48 +02:00
trampoline.c x86: Use find_e820() instead of hard coded trampoline address 2009-12-11 09:28:22 +01:00
traps.c Merge commit 'perf/core' into perf/hw-breakpoint 2009-10-18 01:12:33 +02:00
tsc_sync.c locking: Convert __raw_spin* functions to arch_spin* 2009-12-14 23:55:32 +01:00
tsc.c x86: Reenable TSC sync check at boot, even with NONSTOP_TSC 2009-12-17 14:44:35 -08:00
uv_irq.c x86, irq: Allow 0xff for /proc/irq/[n]/smp_affinity on an 8-cpu system 2009-12-17 22:03:06 -08:00
uv_sysfs.c
uv_time.c x86: UV RTC: Always enable RTC clocksource 2009-11-23 19:41:30 +01:00
verify_cpu_64.S
visws_quirks.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 13:27:33 -08:00
vm86_32.c x86, 32-bit: Convert sys_vm86 & sys_vm86old 2009-12-09 16:29:23 -08:00
vmi_32.c x86, vmi: Mark VMI deprecated and schedule it for removal 2009-10-08 22:27:55 +02:00
vmiclock_32.c x86: vmiclock: Fix printk format 2009-11-18 12:31:06 +01:00
vmlinux.lds.S x86: Regex support and known-movable symbols for relocs, fix _end 2009-12-14 13:55:20 -08:00
vsmp_64.c
vsyscall_64.c Merge branch 'timers-for-linus-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 19:28:09 -08:00
x86_init.c Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-08 13:27:33 -08:00
x8664_ksyms_64.c x86-64: Modify copy_user_generic() alternatives mechanism 2009-12-30 11:57:31 +01:00
xsave.c