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Commit 26456dcf authored by Michael Neuling's avatar Michael Neuling Committed by Benjamin Herrenschmidt
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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: default avatarMichael Neuling <mikey@neuling.org>
CC: stable@kernel.org (2.6.27 & .28 please)
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 0047656e

arch/powerpc/kernel/align.c

+6 −1
Original line number Diff line number Diff line
@@ -646,11 +646,16 @@ static int emulate_vsx(unsigned char __user *addr, unsigned int reg, 
		       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 {