powerpc: fix VSX alignment handler for regs 32-63

PATCH New Michael Neuling 1 participant 1 message Feb 13, 2009 PowerPC

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Michael Neuling

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2009-02-13 05:08 UTC #0 lore raw

PATCH 1/1 powerpc: 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 <[email protected]>

---
 arch/powerpc/kernel/align.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

arch/powerpc/kernel/align.c +6 -1

Index: linux-2.6-ozlabs/arch/powerpc/kernel/align.c
===================================================================
@@ -646,11 +646,16 @@ static int emulate_vsx(unsigned char __u
 		       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 {