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Date: Sun, 17 Jun 2007 12:44:05 +0300 From: Avi Kivity <avi@...ranet.com> To: kvm-devel@...ts.sourceforge.net Cc: linux-kernel@...r.kernel.org, Nitin A Kamble <nitin.a.kamble@...el.com>, Avi Kivity <avi@...ranet.com> Subject: [PATCH 24/58] KVM: VMX: Handle #SS faults from real mode From: Nitin A Kamble <nitin.a.kamble@...el.com> 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@...el.com> Signed-off-by: Avi Kivity <avi@...ranet.com> --- 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 c4c5535..a05bfa0 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; -- 1.5.0.6 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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