[patch 12/83] sparc64: Sync FPU state in VIS emulation handler.

[Greg KH]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Hong H. Pham <hong.pham@xxxxxxxxxxxxx>

[ Upstream commit 410d2c8187ed969238ba98008c1d57307a56cfd8 ]

Copy the FPU state to the task's thread_info->fpregs for the VIS emulation
functions to access.

Signed-off-by: Hong H. Pham <hong.pham@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 arch/sparc64/kernel/visemul.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/arch/sparc64/kernel/visemul.c
+++ b/arch/sparc64/kernel/visemul.c
@@ -807,6 +807,8 @@ int vis_emul(struct pt_regs *regs, unsig
 	if (get_user(insn, (u32 __user *) pc))
 		return -EFAULT;
 
+	save_and_clear_fpu();
+
 	opf = (insn & VIS_OPF_MASK) >> VIS_OPF_SHIFT;
 	switch (opf) {
 	default:

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