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| author | Anton Blanchard <anton@samba.org> | 2013-09-23 04:04:39 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-10-11 07:48:28 +0200 |
| commit | 926f160f460170b0361f600f365369685ad74009 (patch) | |
| tree | 04537aba608b597cbf3af3d8a774b4c09bd52924 /arch/powerpc/include/asm/io.h | |
| parent | powerpc: PTRACE_PEEKUSR/PTRACE_POKEUSER of FPR registers in little endian builds (diff) | |
| download | linux-926f160f460170b0361f600f365369685ad74009.tar.xz linux-926f160f460170b0361f600f365369685ad74009.zip | |
powerpc: Little endian builds double word swap VSX state during context save/restore
The elements within VSX loads and stores are big endian ordered
regardless of endianness. Our VSX context save/restore code uses
lxvd2x and stxvd2x which is a 2x doubleword operation. This means
the two doublewords will be swapped and we have to perform another
swap to undo it.
We need to do this on save and restore.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/io.h')
0 files changed, 0 insertions, 0 deletions