Roland McGrath 84c6f6046c x86_64: make ptrace always sign-extend orig_ax to 64 bits ...

This makes 64-bit ptrace calls setting the 64-bit orig_ax field for a
32-bit task sign-extend the low 32 bits up to 64.  This matches what a
64-bit debugger expects when tracing a 32-bit task.

This follows on my "x86_64 ia32 syscall restart fix".  This didn't
matter until that was fixed.

The debugger ignores or zeros the high half of every register slot it
sets (including the orig_rax pseudo-register) uniformly.  It expects
that the setting of the low 32 bits always has the same meaning as a
32-bit debugger setting those same 32 bits with native 32-bit
facilities.

This never arose before because the syscall restart check never
matched any -ERESTART* values due to lack of sign extension.  Before
that fix, even 32-bit ptrace setting orig_eax to -1 failed to trigger
the restart check anyway.  So this was never noticed as a regression
of 64-bit debuggers vs 32-bit debuggers on the same 64-bit kernel.

Signed-off-by: Roland McGrath <roland@redhat.com>
[ Changed to just do the sign-extension unconditionally on x86-64,
  since orig_ax is always just a small integer and doesn't need
  the full 64-bit range ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2008-03-07 19:05:58 -08:00

..

acpi

PCI: don't load acpi_php when acpi is disabled

2008-02-21 15:34:37 -08:00

cpu

[CPUFREQ] Remove debugging message from e_powersaver

2008-03-05 14:45:31 -05:00

.gitignore

.gitignore update for x86 arch

2007-10-17 21:19:04 +02:00

alternative.c

x86: fix up alternatives with lockdep enabled

2008-01-30 13:33:24 +01:00

aperture_64.c

x86: change aper valid checking sequence

2008-01-30 13:33:39 +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

x86: coding style cleanup for kernel/bootflag.c

2008-01-30 13:32:31 +01:00

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

kmap leak fix for x86_32 kdump

2007-10-19 11:53:33 -07:00

crash_dump_64.c

…

crash.c

x86: disable hpet legacy replacement for kdump

2007-12-03 17:17:10 +01:00

doublefault_32.c

x86: unify tss_struct

2008-01-30 13:31:31 +01:00

ds.c

x86: fix small sparse warning

2008-01-31 22:05:47 +01:00

e820_32.c

x86_32: trim memory by updating e820

2008-01-30 13:33:32 +01:00

e820_64.c

x86_64: make bootmap_start page align v6

2008-02-01 17:49:41 +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

x86: EFI runtime service support

2008-01-30 13:31:19 +01:00

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

x86: convert cpu_to_apicid to be a per cpu variable

2007-10-19 20:35:03 +02:00

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: don't make swapper_pg_pmd global

2008-02-26 12:55:58 +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

x86: unexport __{read,write}_lock_failed

2008-01-30 13:30:29 +01:00

i387.c

x86: fix merge mistake in i387.c

2008-03-07 16:39:14 +01:00

i8237.c

Driver core: change sysdev classes to use dynamic kobject names

2008-01-24 20:40:40 -08:00

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

arch/x86/kernel/io_apic_{64,32}.c: use time_before

2008-01-30 13:32:19 +01:00

io_apic_64.c

arch/x86/kernel/io_apic_{64,32}.c: use time_before

2008-01-30 13:32:19 +01:00

io_delay.c

x86: unexport io_delay_type

2008-02-19 16:18:29 +01:00

ioport.c

x86: refactor ioport unification

2008-01-30 13:33:10 +01:00

irq_32.c

x86: remove all definitions with fastcall

2008-01-30 13:31:17 +01:00

irq_64.c

x86: rename the struct pt_regs members for 32/64-bit consistency

2008-01-30 13:30:56 +01:00

k8.c

…

kdebugfs.c

x86 boot : export boot_params via debugfs for debugging

2008-01-30 13:32:51 +01:00

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: fix the configuration dependencies

2008-02-07 08:42:25 -08:00

Makefile

x86: exclude vsyscall files from stackprotect

2008-02-19 16:18:32 +01:00

mca_32.c

…

mfgpt_32.c

x86: GEODE: MFGPT: fix typo in printk in mfgpt_timer_setup

2008-02-09 23:24:08 +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

x86: move patching code to arch-specific file.

2008-01-30 13:32:10 +01:00

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

i386: Clean up duplicate includes in arch/i386/kernel/

2007-10-17 20:15:51 +02:00

pci-dma_64.c

x86: pci-dma_64.c: cleanups

2008-01-30 13:30:31 +01:00

pci-gart_64.c

x86: fix gart_iommu_init()

2008-02-14 23:30:20 +01:00

pci-nommu_64.c

x86 gart: rename iommu.h to gart.h

2007-10-30 00:22:22 +01:00

pci-swiotlb_64.c

x86: nuke a ton of unused exports

2008-01-30 13:30:28 +01:00

pcspeaker.c

…

pmtimer_64.c

x86: move pmtmr related declarations

2008-01-30 13:30:18 +01:00

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_64: make ptrace always sign-extend orig_ax to 64 bits

2008-03-07 19:05:58 -08:00

quirks.c

Use proper abstractions in quirk_intel_irqbalance

2008-02-11 08:15:03 -08:00

reboot_fixups_32.c

x86: add the RDC machine specific reboot fixup

2008-01-30 13:33:36 +01:00

reboot.c

x86: re-add reboot fixups

2008-03-07 16:39:14 +01:00

relocate_kernel_32.S

…

relocate_kernel_64.S

…

rtc.c

x86: fix sched_clock()

2008-01-30 13:32:40 +01:00

scx200_32.c

x86: fix sparse warning in kernel/scx200_32.c

2008-01-31 22:05:45 +01:00

setup64.c

x86: export __supported_pte_mask

2008-01-30 13:33:24 +01:00

setup_32.c

remove mca-pentium

2008-02-19 16:18:28 +01:00

setup_64.c

x86: fix boot failure on 486 due to TSC breakage

2008-02-26 12:56:04 +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: clear DF before calling signal handler

2008-03-07 16:39:14 +01:00

smp_32.c

x86: voluntary leave_mm before entering ACPI C3

2008-01-30 13:32:01 +01:00

smp_64.c

x86: voluntary leave_mm before entering ACPI C3

2008-01-30 13:32:01 +01:00

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

x86: change write_gdt_entry signature.

2008-01-30 13:31:13 +01:00

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: fix typo in step.c

2008-03-07 16:39:14 +01:00

summit_32.c

spelling fixes: arch/i386/

2007-10-20 01:13:56 +02:00

sys_i386_32.c

remove include/asm-*/ipc.h

2007-10-17 08:42:55 -07:00

sys_x86_64.c

x86: PIE executable randomization, checkpatch fixes

2008-01-30 13:31:07 +01:00

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

x86: Create clflush() inline, remove hardcoded wbinvd

2007-10-17 20:16:12 +02:00

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

x86: rename the struct pt_regs members for 32/64-bit consistency

2008-01-30 13:30:56 +01:00

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

x86: x86 user_regset TLS

2008-01-30 13:31:52 +01:00

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

arch/x86/: spelling fixes

2008-01-30 13:31:42 +01:00

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

x86: clean up arch/x86/kernel/vsmp_64.c

2008-01-30 13:30:24 +01:00

vsyscall_64.c

x86: restore vsyscall64 prochandler

2008-02-29 18:55:39 +01:00

x8664_ksyms_64.c

x86: export cpu_gdt_descr

2008-01-30 13:31:10 +01:00