Paul Mackerras ae62fbb5f1 [POWERPC] Fix subtle FP state corruption bug in signal return on SMP ... This fixes a bug which can cause corruption of the floating-point state on return from a signal handler. If we have a signal handler that has used the floating-point registers, and it happens to context-switch to another task while copying the interrupted floating-point state from the user stack into the thread struct (e.g. because of a page fault, or because it gets preempted), the context switch code will think that the FP registers contain valid FP state that needs to be copied into the thread_struct, and will thus overwrite the values that the signal return code has put into the thread_struct. This can occur because we clear the MSR bits that indicate the presence of valid FP state after copying the state into the thread_struct. To fix this we just move the clearing of the MSR bits to before the copy. A similar potential problem also occurs with the Altivec state, and this fixes that in the same way. Signed-off-by: Paul Mackerras <paulus@samba.org>		2007-06-26 14:49:11 +10:00
..
vdso32	[POWERPC] Fix VDSO gettimeofday() when called with NULL struct timeval	2007-06-26 14:41:19 +10:00
vdso64	[POWERPC] Fix VDSO gettimeofday() when called with NULL struct timeval	2007-06-26 14:41:19 +10:00
align.c	[POWERPC] Alignment exception uses __get/put_user_inatomic	2007-04-13 04:09:38 +10:00
asm-offsets.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	2007-05-09 12:56:01 -07:00
audit.c	[PATCH] audit signal recipients	2007-05-11 05:38:25 -04:00
binfmt_elf32.c
btext.c	[POWERPC] Rename get_property to of_get_property: arch/powerpc	2007-04-13 03:55:19 +10:00
compat_audit.c	[PATCH] add SIGNAL syscall class (v3)	2007-05-11 05:38:25 -04:00
cpu_setup_6xx.S
cpu_setup_pa6t.S	[POWERPC] pasemi: Enable one more hid bit	2007-04-24 21:31:49 +10:00
cpu_setup_ppc970.S
cputable.c	[POWERPC] Add missing pmc_type fields in cpu_table	2007-05-22 20:20:56 +10:00
crash_dump.c
crash.c
dma_64.c
entry_32.S	[POWERPC] Fix COMMON symbol warnings	2007-05-17 21:10:15 +10:00
entry_64.S
firmware.c
fpu.S
head_4xx.S
head_8xx.S
head_32.S
head_44x.S	[POWERPC] Early serial debug support for PPC44x	2007-05-08 14:47:33 +10:00
head_64.S	[POWERPC] Save trap number in bad_stack	2007-04-24 22:06:59 +10:00
head_booke.h
head_fsl_booke.S
ibmebus.c	[POWERPC] ibmebus: change probe/remove interface from using loc-code to DT path	2007-04-13 06:12:42 +10:00
idle_6xx.S
idle_power4.S	[POWERPC] powermac: Support G5 CPU hotplug	2007-05-07 20:31:13 +10:00
idle.c	[POWERPC] powermac: Suspend to disk on G5	2007-05-07 20:31:14 +10:00
init_task.c
io.c
iomap.c
iommu.c	Revert "[POWERPC] DMA 4GB boundary protection"	2007-04-26 19:48:15 +10:00
irq.c	[POWERPC] Compare irq numbers with NO_IRQ not IRQ_NONE	2007-06-02 21:01:56 +10:00
kprobes.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc	2007-05-08 11:50:19 -07:00
l2cr_6xx.S
legacy_serial.c	Merge branch 'linux-2.6'	2007-05-08 13:37:51 +10:00
lparcfg.c	[POWERPC] Replace if-then-else with a switch statement	2007-04-27 21:13:21 +10:00
lparmap.c	[POWERPC] iSeries: suppress build warning in lparmap.c	2007-05-09 16:34:59 +10:00
machine_kexec_32.c
machine_kexec_64.c	[POWERPC] Rename get_property to of_get_property: arch/powerpc	2007-04-13 03:55:19 +10:00
machine_kexec.c
Makefile	[POWERPC] PowerPC MSI infrastructure	2007-05-08 13:40:31 +10:00
misc_32.S	[POWERPC] Remove _get_SP	2007-03-22 22:52:58 +11:00
misc_64.S
misc.S
module_32.c
module_64.c
msi.c	[POWERPC] PowerPC MSI infrastructure	2007-05-08 13:40:31 +10:00
nvram_64.c
of_device.c	[POWERPC] Export of_device_get_modalias	2007-05-07 20:31:15 +10:00
of_platform.c	[POWERPC] Fix pci_setup_phb_io_dynamic for pci_iomap	2007-06-07 11:44:40 +10:00
paca.c
pci_32.c	[POWERPC] Fix STRICT_MM_TYPECHECKS	2007-05-02 20:04:30 +10:00
pci_64.c	[POWERPC] Fix IO space on PCI buses created from of_platform	2007-05-17 21:11:14 +10:00
pci_dn.c	[POWERPC] Rename get_property to of_get_property: arch/powerpc	2007-04-13 03:55:19 +10:00
pmc.c	[POWERPC] Fix typo: MMCR0_PMA0 != MMCR0_PMAO	2007-05-22 20:20:56 +10:00
ppc32.h
ppc_ksyms.c	[POWERPC] Remove duplicate export of __div64_32.	2007-05-02 20:04:32 +10:00
proc_ppc64.c
process.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
prom_init.c	[POWERPC] Tell Phyp we support MSI	2007-05-08 13:40:31 +10:00
prom_parse.c	[POWERPC] Don't complain if size-cells == 0 in prom_parse()	2007-05-12 11:32:48 +10:00
prom.c	[POWERPC] Update documentation for of_find_node_by_type()	2007-06-02 21:01:55 +10:00
ptrace32.c
ptrace-common.h
ptrace.c	[POWERPC] Fix ppc32 single-stepping out of syscalls	2007-06-02 21:01:55 +10:00
rtas_flash.c
rtas_pci.c	[POWERPC] Rename get_property to of_get_property: arch/powerpc	2007-04-13 03:55:19 +10:00
rtas-proc.c	[POWERPC] Fix ppc_rtas_progress_show()	2007-05-17 21:11:15 +10:00
rtas-rtc.c
rtas.c	[POWERPC] Remove old interface find_path_device	2007-04-24 22:08:59 +10:00
semaphore.c
setup_32.c	[POWERPC] Fix breakage caused by 72486f1f8f	2007-04-13 03:55:16 +10:00
setup_64.c	[PATCH] x86: Allow percpu variables to be page-aligned	2007-05-02 19:27:12 +02:00
setup-common.c	[POWERPC] Check cache coherency of kernel vs firmware	2007-05-12 11:32:50 +10:00
setup.h
signal_32.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
signal_64.c	[POWERPC] Fix subtle FP state corruption bug in signal return on SMP	2007-06-26 14:49:11 +10:00
smp-tbsync.c
smp.c	[POWERPC] Fix smp_call_function to be preempt-safe	2007-05-22 20:20:56 +10:00
suspend.c	[PATCH] x86: Move swsusp __pa() dependent code to arch portion	2007-05-02 19:27:07 +02:00
swsusp_32.S
swsusp_64.c	[POWERPC] powermac: Suspend to disk on G5	2007-05-07 20:31:14 +10:00
swsusp_asm64.S	[POWERPC] powermac: Suspend to disk on G5	2007-05-07 20:31:14 +10:00
swsusp.c	powerpc: fixup hard_irq_disable semantics	2007-05-11 08:29:34 -07:00
sys_ppc32.c	[POWERPC] Clean up unused ROUND_UP, NAME_OFFSET macros in arch/powerpc	2007-04-13 04:00:41 +10:00
syscalls.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
sysfs.c	Add suspend-related notifications for CPU hotplug	2007-05-09 12:30:56 -07:00
systbl.S
tau_6xx.c
time.c	[POWERPC] Simplify smp_space_timers	2007-05-12 11:32:47 +10:00
traps.c	move die notifier handling to common code	2007-05-08 11:15:04 -07:00
udbg_16550.c	[POWERPC] Early serial debug support for PPC44x	2007-05-08 14:47:33 +10:00
udbg.c	[POWERPC] Fix console output getting dropped on platforms without udbg_putc	2007-06-14 11:56:17 +10:00
vdso.c	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
vecemu.c
vector.S
vio.c	Merge branch 'linux-2.6'	2007-05-08 13:37:51 +10:00
vmlinux.lds.S	[POWERPC] Fix powerpc vmlinux.lds.S	2007-05-22 20:20:56 +10:00