xtensa: save and restore scompare1 SR on kernel entry

Although scompare1 may be saved/restored by xchal_ncp_{load,store}
macros, explicit save/restore of registers manipulated by the kernel
itself is considered more correct.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/xtensa/kernel/asm-offsets.c b/arch/xtensa/kernel/asm-offsets.c
index 7dc3f9157185..845475afc683 100644
--- a/arch/xtensa/kernel/asm-offsets.c
+++ b/arch/xtensa/kernel/asm-offsets.c
@@ -41,6 +41,7 @@ int main(void)
         DEFINE(PT_SAR, offsetof (struct pt_regs, sar));
         DEFINE(PT_ICOUNTLEVEL, offsetof (struct pt_regs, icountlevel));
         DEFINE(PT_SYSCALL, offsetof (struct pt_regs, syscall));
+        DEFINE(PT_SCOMPARE1, offsetof(struct pt_regs, scompare1));
         DEFINE(PT_AREG, offsetof (struct pt_regs, areg[0]));
         DEFINE(PT_AREG0, offsetof (struct pt_regs, areg[0]));
         DEFINE(PT_AREG1, offsetof (struct pt_regs, areg[1]));