PWN-Hunter/android_kernel_xiaomi_sdm845
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microblaze: Save kernel mode in delay slot

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This change save one instruction if kernel comes from kernel
space.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek 2010-06-22 18:02:06 +02:00
parent e7741075b3
commit da23355280
1 changed files with 1 additions and 2 deletions
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3
arch/microblaze/kernel/entry.S
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@ -282,9 +282,8 @@
tophys(r1,r1); \
addik r1, r1, -STATE_SAVE_SIZE; /* Make room on the stack. */\
SAVE_REGS \
swi r1, r1, PTO+PT_MODE; \
brid 2f; \
nop; /* Fill delay slot */ \
swi r1, r1, PTO+PT_MODE; \
1: /* User-mode state save. */ \
lwi r1, r0, TOPHYS(PER_CPU(CURRENT_SAVE)); /* get saved current */\
tophys(r1,r1); \