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| author | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-06-25 11:54:31 -0500 |
|---|---|---|
| committer | Adhemerval Zanella <azanella@linux.vnet.ibm.com> | 2014-07-07 15:41:27 -0500 |
| commit | 87868c2418fb74357757e3b739ce5b76b17a8929 (patch) | |
| tree | 9ec2b1d9a4c0cf6af2a4306e09a11fc992bea94c /ChangeLog | |
| parent | 07aedd78b095093e866efd4809a80090e2b91a0b (diff) | |
| download | glibc-87868c2418fb74357757e3b739ce5b76b17a8929.tar.gz glibc-87868c2418fb74357757e3b739ce5b76b17a8929.tar.xz glibc-87868c2418fb74357757e3b739ce5b76b17a8929.zip | |
PowerPC: Align power7 memcpy using VSX to quadword
This patch changes power7 memcpy to use VSX instructions only when memory is aligned to quardword. It is to avoid unaligned kernel traps on non-cacheable memory (for instance, memory-mapped I/O).
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 1c1d24b76f..0fb34048c3 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,9 @@ 2014-07-07 Adhemerval Zanella <azanella@linux.vnet.ibm.com> + * sysdeps/powerpc/powerpc64/power7/memcpy.S: Align VSX copies to 16B + to avoid alignment traps in non-cacheable memory. + * sysdeps/powerpc/powerpc32/power7/memcpy.S: Likewise. + * sysdeps/powerpc/powerpc32/power4/multiarch/Makefile: Add memmove multiarch objects. * sysdeps/powerpc/powerpc32/power4/multiarch/memmove-power7.c: New |