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| author | Nitin A Kamble <nitin.a.kamble@intel.com> | 2007-05-17 15:50:34 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 12:05:41 +0300 |
| commit | b3f37707b05e9ce82d5bec660e9d0b15452ee9a0 (patch) | |
| tree | a4d210f6449be292cfd9171c3e3e972ff2773234 | |
| parent | cd2276a795b013d1416c96b38eec90a66cdd10c4 (diff) | |
| download | linux-3.10-b3f37707b05e9ce82d5bec660e9d0b15452ee9a0.tar.gz linux-3.10-b3f37707b05e9ce82d5bec660e9d0b15452ee9a0.tar.bz2 linux-3.10-b3f37707b05e9ce82d5bec660e9d0b15452ee9a0.zip | |
KVM: VMX: Handle #SS faults from real mode
Instructions with address size override prefix opcode 0x67
Cause the #SS fault with 0 error code in VM86 mode. Forward
them to the emulator.
Signed-Off-By: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | drivers/kvm/vmx.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index c4c553588a2..a05bfa08587 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -1488,7 +1488,11 @@ static int handle_rmode_exception(struct kvm_vcpu *vcpu, if (!vcpu->rmode.active) return 0; - if (vec == GP_VECTOR && err_code == 0) + /* + * Instruction with address size override prefix opcode 0x67 + * Cause the #SS fault with 0 error code in VM86 mode. + */ + if (((vec == GP_VECTOR) || (vec == SS_VECTOR)) && err_code == 0) if (emulate_instruction(vcpu, NULL, 0, 0) == EMULATE_DONE) return 1; return 0; |