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| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-10-27 13:37:40 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-10-27 13:37:40 -0300 |
| commit | badc0e42604c4465facd81d2323e98b3b1eb9188 (patch) | |
| tree | e61811e7ddf70517f4b546d522ba3b630b38f50f /arch/x86/kernel/alternative.c | |
| parent | f19866e5cb04f8f007cb422132ea4611cdacc8e3 (diff) | |
Linux-libre 4.2.4-gnupck-4.2.4-gnu
Diffstat (limited to 'arch/x86/kernel/alternative.c')
| -rw-r--r-- | arch/x86/kernel/alternative.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index c42827eb8..25f909362 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -338,10 +338,15 @@ done: static void __init_or_module optimize_nops(struct alt_instr *a, u8 *instr) { + unsigned long flags; + if (instr[0] != 0x90) return; + local_irq_save(flags); add_nops(instr + (a->instrlen - a->padlen), a->padlen); + sync_core(); + local_irq_restore(flags); DUMP_BYTES(instr, a->instrlen, "%p: [%d:%d) optimized NOPs: ", instr, a->instrlen - a->padlen, a->padlen); |