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Andi Kleen c33d4568ac [PATCH] x86-64: Fix up handling of non canonical user RIPs 
EM64T CPUs have somewhat weird error reporting for non canonical RIPs in
SYSRET.

We can't handle any exceptions there because the exception handler would
end up running on the user stack which is unsafe.

To avoid problems any code that might end up with a user touched pt_regs
should return using int_ret_from_syscall.  int_ret_from_syscall ends up
using IRET, which allows safe exceptions.

Cc: Ernie Petrides <petrides@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-12 22:56:29 -08:00
..
alpha [PATCH] alpha: fix IRQ handling lockup 2006-03-09 19:47:37 -08:00
arm [ARM] iwmmxt thread state alignment 2006-03-12 22:36:06 +00:00
arm26
cris [PATCH] fallout from ptrace consolidation patch: cris/arch-v10 2006-02-07 20:57:19 -05:00
frv [PATCH] FRV: Use virtual interrupt disablement 2006-02-14 16:09:35 -08:00
h8300 [PATCH] add missing pm_power_off's 2006-03-06 18:40:44 -08:00
i386 [PATCH] i386: port ATI timer fix from x86_64 to i386 II 2006-03-08 18:10:31 -08:00
ia64 [IA64] Fix race in the accessed/dirty bit handlers 2006-03-08 16:07:55 -08:00
m32r [PATCH] m32r: fix and update for gcc-4.0 2006-02-24 14:31:36 -08:00
m68k [PATCH] m68k: pm_power_off() breakage 2006-02-18 16:30:20 -05:00
m68knommu [PATCH] hrtimer: round up relative start time on low-res arches 2006-02-14 16:09:35 -08:00
mips [MIPS] Always pass -msoft-float. 2006-03-09 18:05:10 +00:00
parisc [PATCH] hrtimer: round up relative start time on low-res arches 2006-02-14 16:09:35 -08:00
powerpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge 2006-03-08 18:11:00 -08:00
ppc powerpc: Fix various syscall/signal/swapcontext bugs 2006-03-08 13:24:22 +11:00
s390 [PATCH] s390: Increase spinlock retry code performance 2006-03-09 19:47:38 -08:00
sh [PATCH] arch/sh/Kconfig: don't source non-existing Kconfig files 2006-03-09 19:47:37 -08:00
sh64 [PATCH] drive_info removal outside of arch/i386 2006-02-07 20:56:47 -05:00
sparc [SPARC]: sys_newfstatat --> sys_fstatat64 2006-02-12 23:30:11 -08:00
sparc64 [SPARC64]: Mark __ex_table section correctly. 2006-03-04 23:23:56 -08:00
um [PATCH] uml: tidying COW code 2006-02-24 14:31:37 -08:00
v850 [PATCH] add missing pm_power_off's 2006-03-06 18:40:44 -08:00
x86_64 [PATCH] x86-64: Fix up handling of non canonical user RIPs 2006-03-12 22:56:29 -08:00
xtensa [PATCH] xtensa must set RWSEM_GENERIC_SPINLOCK=y 2006-03-09 19:47:37 -08:00