[PATCH 14/39] powerpc: Alignment handler shouldn't access VSX registers with TS_FPR

[Anton Blanchard]

The TS_FPR macro selects the FPR component of a VSX register (the
high doubleword). emulate_vsx is using this macro to get the
address of the associated VSX register. This happens to work on big
endian, but fails on little endian.

Replace it with an explicit array access.

Signed-off-by: Anton Blanchard <an...@samba.org>
---
 arch/powerpc/kernel/align.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 25d8d8b..3049bd0 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -650,7 +650,7 @@ static int emulate_vsx(unsigned char __user *addr, unsigned 
int reg,
        flush_vsx_to_thread(current);
 
        if (reg < 32)
-               ptr = (char *) &current->thread.TS_FPR(reg);
+               ptr = (char *) &current->thread.fpr[reg][0];
        else
                ptr = (char *) &current->thread.vr[reg - 32];
 
-- 
1.8.1.2

_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev