diff options
| author | Avi Kivity <avi@qumranet.com> | 2007-06-05 16:15:51 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 12:05:46 +0300 |
| commit | 72d6e5a08a8ba2105b3f36e32285e8fbfbed1f71 (patch) | |
| tree | 6d20932e350683760d79f2c6cca6ef3bfafbce96 | |
| parent | d3bef15f84f91c73a5515ad4c6a1749f8f63afcf (diff) | |
| download | linux-72d6e5a08a8ba2105b3f36e32285e8fbfbed1f71.tar.gz | |
KVM: Emulate hlt on real mode for Intel
This has two use cases: the bios can't boot from disk, and guest smp bootstrap. Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | drivers/kvm/kvm.h | 1 | ||||
| -rw-r--r-- | drivers/kvm/vmx.c | 7 | ||||
| -rw-r--r-- | drivers/kvm/x86_emulate.c | 6 |
3 files changed, 12 insertions, 2 deletions
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h index ac358b8d3de8..d49b16cae27a 100644 --- a/drivers/kvm/kvm.h +++ b/drivers/kvm/kvm.h @@ -347,6 +347,7 @@ struct kvm_vcpu { u32 ar; } tr, es, ds, fs, gs; } rmode; + int halt_request; /* real mode on Intel only */ int cpuid_nent; struct kvm_cpuid_entry cpuid_entries[KVM_MAX_CPUID_ENTRIES]; diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index 90abd3c58c65..a1f51b9d482d 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -1608,8 +1608,13 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) if (vcpu->rmode.active && handle_rmode_exception(vcpu, intr_info & INTR_INFO_VECTOR_MASK, - error_code)) + error_code)) { + if (vcpu->halt_request) { + vcpu->halt_request = 0; + return kvm_emulate_halt(vcpu); + } return 1; + } if ((intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK)) == (INTR_TYPE_EXCEPTION | 1)) { kvm_run->exit_reason = KVM_EXIT_DEBUG; diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index 6123c0292b22..a4a84817b274 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -143,7 +143,8 @@ static u8 opcode_table[256] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xF0 - 0xF7 */ 0, 0, 0, 0, - 0, 0, ByteOp | DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM, + ImplicitOps, 0, + ByteOp | DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM, /* 0xF8 - 0xFF */ 0, 0, 0, 0, 0, 0, ByteOp | DstMem | SrcNone | ModRM, DstMem | SrcNone | ModRM @@ -1149,6 +1150,9 @@ special_insn: case 0xae ... 0xaf: /* scas */ DPRINTF("Urk! I don't handle SCAS.\n"); goto cannot_emulate; + case 0xf4: /* hlt */ + ctxt->vcpu->halt_request = 1; + goto done; } goto writeback; |