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4ba51fd75c
android_kernel_xiaomi_sm8350/arch/x86/kernel
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Roland McGrath 4ba51fd75c x86 ptrace: avoid unnecessary wrmsr 
This avoids using wrmsr on MSR_IA32_DEBUGCTLMSR when it's not needed.
No wrmsr ever needs to be done if noone has ever used block stepping.

Without this change, using ptrace on 2.6.25 on an x86 KVM guest
will tickle KVM's missing support for the MSR and crash the guest
kernel.  Though host KVM is the buggy one, this makes for a regression
in the guest behavior from 2.6.24->2.6.25 that we can easily avoid.

I also corrected some bad whitespace.

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-03 15:42:43 -07:00
..
acpi PCI: don't load acpi_php when acpi is disabled 2008-02-21 15:34:37 -08:00
cpu x86, cpufreq: fix Speedfreq-SMI call that clobbers ECX 2008-03-26 22:23:40 +01:00
.gitignore
alternative.c x86: fix up alternatives with lockdep enabled 2008-01-30 13:33:24 +01:00
aperture_64.c x86: fix long standing bug with usb after hibernation with 4GB ram 2008-03-21 17:06:15 +01:00
apic_32.c x86: don't disable the APIC if it hasn't been mapped yet 2008-01-30 13:33:17 +01:00
apic_64.c x86: change bios_cpu_apicid to percpu data variable fixup 2008-01-30 13:33:21 +01:00
apm_32.c x86: isolate PIC/PIT in/out calls 2008-01-30 13:33:14 +01:00
asm-offsets_32.c lguest: fix build breakage 2008-02-26 12:55:49 +01:00
asm-offsets_64.c x86: add asm_offset PARAVIRT constants 2008-01-30 13:33:19 +01:00
asm-offsets.c
audit_64.c
bootflag.c
bugs_64.c x86, 32-bit: trim memory not covered by wb mtrrs 2008-01-30 13:33:18 +01:00
cpuid.c x86: cpuid, msr: use inode mutex instead of big kernel lock 2008-02-04 16:47:59 +01:00
crash_dump_32.c
crash_dump_64.c
crash.c
doublefault_32.c
ds.c x86: fix small sparse warning 2008-01-31 22:05:47 +01:00
e820_32.c x86: trim mtrr don't close gap for resource allocation. 2008-03-21 17:06:15 +01:00
e820_64.c x86: trim mtrr don't close gap for resource allocation. 2008-03-21 17:06:15 +01:00
early_printk.c x86: make early_console static in early_printk.c 2008-02-01 17:49:42 +01:00
early-quirks.c x86: fix section mismatch warning in early-quirks.c 2008-01-30 13:33:37 +01:00
efi_32.c x86: sparse error in efi_32.c 2008-02-19 16:18:28 +01:00
efi_64.c x86: EFI runtime code mapping enhancement 2008-02-13 16:20:35 +01:00
efi_stub_32.S
efi_stub_64.S
efi.c x86: sparse warning in efi.c 2008-02-19 16:18:28 +01:00
entry_32.S x86: don't make irq_return global 2008-02-19 16:18:29 +01:00
entry_64.S x86: fix execve with -fstack-protect 2008-02-26 12:55:57 +01:00
genapic_64.c x86: cleanup x86_cpu_to_apicid references 2008-01-30 13:33:11 +01:00
genapic_flat_64.c
geode_32.c x86: GEODE: MFGPT: Use "just-in-time" detection for the MFGPT timers 2008-02-09 23:24:08 +01:00
head64.c x86: zap invalid and unused pmds in early boot 2008-02-18 20:54:14 +01:00
head_32.S x86: fix fault_msg nul termination 2008-03-21 17:06:15 +01:00
head_64.S x86: rename KERNEL_TEXT_SIZE => KERNEL_IMAGE_SIZE 2008-02-26 12:55:56 +01:00
hpet.c x86: hpet fix docbook comment 2008-02-26 12:55:50 +01:00
i386_ksyms_32.c
i387.c x86: fix merge mistake in i387.c 2008-03-07 16:39:14 +01:00
i8237.c
i8253.c x86: pit_clockevent can be static 2008-02-13 16:20:35 +01:00
i8259_32.c x86: i8259A: remove redundant irq_descinitialization 2008-02-19 16:18:34 +01:00
i8259_64.c x86: provide a native_init_IRQ function on 64-bit 2008-01-30 13:33:19 +01:00
init_task.c x86: delay the export removal of init_mm 2008-02-29 18:55:42 +01:00
io_apic_32.c
io_apic_64.c
io_delay.c x86: add dmi quirk for io_delay 2008-03-26 22:23:40 +01:00
ioport.c x86: refactor ioport unification 2008-01-30 13:33:10 +01:00
irq_32.c
irq_64.c
k8.c
kdebugfs.c
kprobes.c x86, kprobes: remove sparse warnings from x86 2008-02-19 16:18:28 +01:00
ldt.c x86: cleanup - eliminate numbers in LDT allocation code 2008-02-04 16:48:03 +01:00
machine_kexec_32.c vmcoreinfo: fix the configuration dependencies 2008-02-07 08:42:25 -08:00
machine_kexec_64.c vmcoreinfo: add the symbol "phys_base" 2008-04-02 15:28:19 -07:00
Makefile x86: exclude vsyscall files from stackprotect 2008-02-19 16:18:32 +01:00
mca_32.c
mfgpt_32.c x86: GEODE: add missing module.h include 2008-03-26 22:23:40 +01:00
microcode.c x86: fix section mismatch warnings when referencing notifiers 2008-02-01 17:49:42 +01:00
module_32.c
module_64.c
mpparse_32.c Introduce flags for reserve_bootmem() 2008-02-07 08:42:25 -08:00
mpparse_64.c x86: fix section mismatch warning in acpi/boot.c 2008-01-30 13:33:37 +01:00
msr.c x86: cpuid, msr: use inode mutex instead of big kernel lock 2008-02-04 16:47:59 +01:00
nmi_32.c x86: fix compile warning building without CONFIG_SYSCTL 2008-02-19 16:18:29 +01:00
nmi_64.c x86: fix compile warning building without CONFIG_SYSCTL 2008-02-19 16:18:29 +01:00
numaq_32.c x86: convert TSC disabling to generic cpuid disable bitmap 2008-01-30 13:33:20 +01:00
paravirt_patch_32.c
paravirt_patch_64.c x86: add stringify header 2008-01-30 13:33:19 +01:00
paravirt.c x86: fill in missing pv_mmu_ops entries for PAGETABLE_LEVELS >= 3 2008-01-30 13:33:20 +01:00
pci-calgary_64.c iommu sg: x86: convert calgary IOMMU to use the IOMMU helper 2008-02-05 09:44:11 -08:00
pci-dma_32.c
pci-dma_64.c x86: revert: reserve dma32 early for gart 2008-03-22 19:25:41 +01:00
pci-gart_64.c x86: fix gart_iommu_init() 2008-02-14 23:30:20 +01:00
pci-nommu_64.c
pci-swiotlb_64.c
pcspeaker.c
pmtimer_64.c
process_32.c x86: disable BTS ptrace extensions for now 2008-02-29 18:55:42 +01:00
process_64.c x86: disable BTS ptrace extensions for now 2008-02-29 18:55:42 +01:00
ptrace.c x86: ptrace.c: fix defined-but-unused warnings 2008-03-27 16:08:44 +01:00
quirks.c x86: hpet clock enable quirk on nVidia nForce 430 2008-03-21 17:06:15 +01:00
reboot_fixups_32.c x86: add the RDC machine specific reboot fixup 2008-01-30 13:33:36 +01:00
reboot.c x86: fix reboot problem with Dell Optiplex 745, 0KW626 board 2008-03-21 17:06:15 +01:00
relocate_kernel_32.S
relocate_kernel_64.S
rtc.c
scx200_32.c x86: fix sparse warning in kernel/scx200_32.c 2008-01-31 22:05:45 +01:00
setup64.c x86: tight online check in setup_per_cpu_areas 2008-03-21 17:06:15 +01:00
setup_32.c x86: fix trim mtrr not to setup_memory two times 2008-03-26 22:23:41 +01:00
setup_64.c x86: fix memoryless node oops during boot 2008-03-26 22:23:40 +01:00
sigframe_32.h
signal_32.c x86: clear DF before calling signal handler 2008-03-07 16:39:14 +01:00
signal_64.c x86: ia32 syscall restart fix 2008-03-11 17:11:54 +01:00
smp_32.c
smp_64.c
smpboot_32.c calibrate_delay() must be __cpuinit 2008-02-06 10:41:08 -08:00
smpboot_64.c x86: make c_idle.work have a static address. 2008-02-26 12:56:02 +01:00
smpcommon_32.c
srat_32.c Merge branches 'release', 'bugzilla-6217', 'bugzilla-6629', 'bugzilla-6933', 'bugzilla-7186', 'bugzilla-8269', 'bugzilla-8570', 'bugzilla-9139', 'bugzilla-9277', 'bugzilla-9341', 'bugzilla-9444', 'bugzilla-9614', 'bugzilla-9643' and 'bugzilla-9644' into release 2008-02-07 03:09:43 -05:00
stacktrace.c x86: don't save unreliable stack trace entries 2008-02-26 12:55:58 +01:00
step.c x86 ptrace: avoid unnecessary wrmsr 2008-04-03 15:42:43 -07:00
summit_32.c
sys_i386_32.c
sys_x86_64.c
syscall_64.c
syscall_table_32.S timerfd: wire the new timerfd API to the x86 family 2008-02-05 09:44:07 -08:00
tce_64.c
test_nx.c x86: mark the .rodata section also NX 2008-02-06 22:39:45 +01:00
test_rodata.c x86: include proper prototypes for rodata_test 2008-02-14 23:30:20 +01:00
time_32.c
time_64.c time: fix typo in comments 2008-02-08 09:22:29 -08:00
tls.c x86: tls prevent_tail_call 2008-02-29 18:55:39 +01:00
tls.h
topology.c x86: fix section mismatch warning in topology.c:arch_register_cpu 2008-02-19 16:18:30 +01:00
trampoline_32.S x86: remove misleading comments in trampoline_*.S 2008-02-04 16:48:01 +01:00
trampoline_64.S x86: remove misleading comments in trampoline_*.S 2008-02-04 16:48:01 +01:00
traps_32.c x86: fix sparse error in traps_32.c 2008-02-06 22:39:44 +01:00
traps_64.c x86: fix "BUG: sleeping function called from invalid context" in print_vma_addr() 2008-02-14 23:30:19 +01:00
tsc_32.c x86: notsc is ignored on common configurations 2008-02-26 12:55:54 +01:00
tsc_64.c x86: export check_tsc_unstable 2008-01-30 13:33:24 +01:00
tsc_sync.c x86: add warning to check_tsc_warp() 2008-01-30 13:33:24 +01:00
verify_cpu_64.S
vm86_32.c
vmi_32.c x86: VMI fix 2008-02-04 16:47:54 +01:00
vmiclock_32.c x86: isolate PIC/PIT in/out calls 2008-01-30 13:33:14 +01:00
vmlinux_32.lds.S x86: lds - Use PAGE_SIZE instead of numeric constant 2008-02-19 16:18:33 +01:00
vmlinux_64.lds.S x86: lds - Use THREAD_SIZE instead of numeric constant 2008-02-19 16:18:34 +01:00
vmlinux.lds.S
vsmp_64.c
vsyscall_64.c x86: restore vsyscall64 prochandler 2008-02-29 18:55:39 +01:00
x8664_ksyms_64.c