diff options
| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2012-04-09 17:40:00 +0200 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2012-04-17 01:36:15 +0200 |
| commit | 49597d8116ad70aabb598e606b218ddd9315b0af (patch) | |
| tree | a48b792af42f74867bb929716f84d62145847602 | |
| parent | KVM: x86 emulator: add support for vector alignment (diff) | |
| download | linux-49597d8116ad70aabb598e606b218ddd9315b0af.tar.xz linux-49597d8116ad70aabb598e606b218ddd9315b0af.zip | |
KVM: x86: emulate movdqa
An Ubuntu 9.10 Karmic Koala guest is unable to boot or install due to
missing movdqa emulation:
kvm_exit: reason EXCEPTION_NMI rip 0x7fef3e025a7b info 7fef3e799000 80000b0e
kvm_page_fault: address 7fef3e799000 error_code f
kvm_emulate_insn: 0:7fef3e025a7b: 66 0f 7f 07 (prot64)
movdqa %xmm0,(%rdi)
[avi: mark it explicitly aligned]
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| -rw-r--r-- | arch/x86/kvm/emulate.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 6302e5c74341..b160fb1fc68b 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -2818,7 +2818,7 @@ static int em_rdpmc(struct x86_emulate_ctxt *ctxt) static int em_mov(struct x86_emulate_ctxt *ctxt) { - ctxt->dst.val = ctxt->src.val; + memcpy(ctxt->dst.valptr, ctxt->src.valptr, ctxt->op_bytes); return X86EMUL_CONTINUE; } @@ -2898,12 +2898,6 @@ static int em_mov_sreg_rm(struct x86_emulate_ctxt *ctxt) return load_segment_descriptor(ctxt, sel, ctxt->modrm_reg); } -static int em_movdqu(struct x86_emulate_ctxt *ctxt) -{ - memcpy(&ctxt->dst.vec_val, &ctxt->src.vec_val, ctxt->op_bytes); - return X86EMUL_CONTINUE; -} - static int em_invlpg(struct x86_emulate_ctxt *ctxt) { int rc; @@ -3443,7 +3437,7 @@ static struct opcode group11[] = { }; static struct gprefix pfx_0f_6f_0f_7f = { - N, N, N, I(Sse | Unaligned, em_movdqu), + N, I(Sse | Aligned, em_mov), N, I(Sse | Unaligned, em_mov), }; static struct opcode opcode_table[256] = { |