commit 26456dcfb8d8e43b1b64b2a14710694cf7a72f05
author Michael Neuling <mikey@neuling.org> Thu Feb 12 19:08:58 2009 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> Fri Feb 13 16:37:45 2009 +1100
tree 2a655c7515a5c27ea20a51a206e4d3b8df0edcba
parent 0047656e2a97d4452dd7df9e52591a7afe21a263

powerpc/vsx: Fix VSX alignment handler for regs 32-63

Fix the VSX alignment handler for VSX registers > 32.  32-63 are stored
in the VMX part of the thread_struct not the FPR part.

Signed-off-by: Michael Neuling <mikey@neuling.org>
CC: stable@kernel.org (2.6.27 & .28 please)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/kernel/align.c

diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index 5af4e9b..ada0692 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -646,11 +646,16 @@
 		       unsigned int areg, struct pt_regs *regs,
 		       unsigned int flags, unsigned int length)
 {
-	char *ptr = (char *) &current->thread.TS_FPR(reg);
+	char *ptr;
 	int ret = 0;
 
 	flush_vsx_to_thread(current);
 
+	if (reg < 32)
+		ptr = (char *) &current->thread.TS_FPR(reg);
+	else
+		ptr = (char *) &current->thread.vr[reg - 32];
+
 	if (flags & ST)
 		ret = __copy_to_user(addr, ptr, length);
         else {