diff options
author | Paul Mackerras <paulus@samba.org> | 2006-12-20 13:57:06 +1100 |
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committer | Paul Mackerras <paulus@samba.org> | 2006-12-20 16:37:49 +1100 |
commit | 1c9bb1a01ac1bc92a0d98cf3e40a7922ee684dc0 (patch) | |
tree | 4072b12f9507045ed75595727998a00f17cdacc8 /mm | |
parent | bb63ab13515951f4d09b16c9e8bd6e50b0f20d1e (diff) |
[POWERPC] Fix register save area alignment for swapcontext syscall
For 32-bit processes, the getcontext side of the swapcontext system
call (i.e. the saving of the context when the first argument is
non-NULL) has to set the ctx->uc_mcontext.uc_regs pointer to the place
where it saves the registers. Which it does, but it doesn't ensure
that the pointer is 16-byte aligned. 16-byte alignment is needed
because the Altivec/VMX registers are saved in there, and they need to
be on a 16-byte boundary.
This fixes it by ensuring the appropriate alignment of the pointer.
This issue was pointed out by Jakub Jelinek.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions