Hi,
This patch fixes the bug if single-stepping over the affected
instruction in the debugger, but not if the testcase is run
standalone. For that, Wind River has another patch I hope they will
send as a followup to this patch submission.
Signed-off-by: Joseph Myers <joseph@xxxxxxxxxxxxxxxx>
Patch applied, thanks!
Here's the follow up patch to Joseph's VIS emulation fix. The pdist
testcase runs successfully as a standalone with this patch.
Best regards,
Hong
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>
---
arch/sparc64/kernel/visemul.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/sparc64/kernel/visemul.c b/arch/sparc64/kernel/visemul.c
index 4e285f9..a4428fd 100644
--- a/arch/sparc64/kernel/visemul.c
+++ b/arch/sparc64/kernel/visemul.c
@@ -802,16 +802,18 @@ int vis_emul(struct pt_regs *regs, unsigned int insn)
BUG_ON(regs->tstate & TSTATE_PRIV);
if (test_thread_flag(TIF_32BIT))
pc = (u32)pc;
if (get_user(insn, (u32 __user *) pc))
return -EFAULT;
+ save_and_clear_fpu();
+
opf = (insn & VIS_OPF_MASK) >> VIS_OPF_SHIFT;
switch (opf) {
default:
return -EINVAL;
/* Pixel Formatting Instructions. */
case FPACK16_OPF:
case FPACK32_OPF:
--
1.5.5.1
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