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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-11 20:11:44 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-11 20:11:44 +0300 |
| commit | d32917eedc3b8a21f40206c8dd655beae5be8795 (patch) | |
| tree | 86459c0380724624b28cfd12121ce6696751dd9a /arch/x86/kvm | |
| parent | c5114626f33b62fa7595e57d87f33d9d1f8298a2 (diff) | |
| parent | 44ca941a677323b28366835428ec289a55f764d8 (diff) | |
| download | linux-d32917eedc3b8a21f40206c8dd655beae5be8795.tar.xz | |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"Two small x86 patches, improving "make kvmconfig" and fixing an
objtool warning for CONFIG_PROFILE_ALL_BRANCHES"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvmconfig: add more virtio drivers
x86/kvm: Add stack frame dependency to fastop() inline asm
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 0f6294376fbd..a2f24af3c999 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -5110,13 +5110,17 @@ static void fetch_possible_mmx_operand(struct x86_emulate_ctxt *ctxt, static int fastop(struct x86_emulate_ctxt *ctxt, void (*fop)(struct fastop *)) { + register void *__sp asm(_ASM_SP); ulong flags = (ctxt->eflags & EFLAGS_MASK) | X86_EFLAGS_IF; + if (!(ctxt->d & ByteOp)) fop += __ffs(ctxt->dst.bytes) * FASTOP_SIZE; + asm("push %[flags]; popf; call *%[fastop]; pushf; pop %[flags]\n" : "+a"(ctxt->dst.val), "+d"(ctxt->src.val), [flags]"+D"(flags), - [fastop]"+S"(fop) + [fastop]"+S"(fop), "+r"(__sp) : "c"(ctxt->src2.val)); + ctxt->eflags = (ctxt->eflags & ~EFLAGS_MASK) | (flags & EFLAGS_MASK); if (!fop) /* exception is returned in fop variable */ return emulate_de(ctxt); |