linux/arch/powerpc
Paul E. McKenney 17cb5c2fef powerpc: Restore registers on error exit from csum_partial_copy_generic()
commit 8f21bd0090 upstream.

The csum_partial_copy_generic() function saves the PowerPC non-volatile
r14, r15, and r16 registers for the main checksum-and-copy loop.
Unfortunately, it fails to restore them upon error exit from this loop,
which results in silent corruption of these registers in the presumably
rare event of an access exception within that loop.

This commit therefore restores these register on error exit from the loop.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-13 16:08:31 -07:00
..
boot MMC highlights for 3.10: 2013-05-04 13:45:17 -07:00
configs USB: remove remaining instances of USB_SUSPEND 2013-05-15 13:44:44 -04:00
crypto powerpc: Fix compile of sha1-powerpc-asm.S on 32-bit 2013-03-05 16:56:26 +11:00
include powerpc: Work around gcc miscompilation of __pa() on 64-bit 2013-09-07 22:09:57 -07:00
kernel powerpc/sysfs: Disable writing to PURR in guest mode 2013-10-13 16:08:31 -07:00
kvm KVM: PPC: Book3S: Fix compile error in XICS emulation 2013-09-26 17:18:03 -07:00
lib powerpc: Restore registers on error exit from csum_partial_copy_generic() 2013-10-13 16:08:31 -07:00
math-emu
mm powerpc: VPHN topology change updates all siblings 2013-08-11 18:35:20 -07:00
net filter: bpf_jit_comp: refactor and unify BPF JIT image dump output 2013-03-21 17:25:56 -04:00
oprofile Merge branch 'merge' into next 2013-01-29 11:33:37 +11:00
perf powerpc/perf: Fix handling of FAB events 2013-10-13 16:08:31 -07:00
platforms powerpc: Default arch idle could cede processor on pseries 2013-09-26 17:18:01 -07:00
sysdev powerpc/pci: Fix boot panic on mpc83xx (regression) 2013-06-24 16:54:09 -05:00
xmon Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
Kconfig powerpc: Work around gcc miscompilation of __pa() on 64-bit 2013-09-07 22:09:57 -07:00
Kconfig.debug powerpc: Add an in memory udbg console 2013-05-08 06:36:49 +10:00
Makefile powerpc: Avoid load of static chain register when calling nested functions through a pointer on 64bit 2013-01-10 17:01:27 +11:00
relocs_check.pl