From 991eebf9f8e523e7ff1e4d31ac80641582b2e57a Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Thu, 11 Apr 2013 12:10:51 +0300 Subject: KVM: VMX: do not try to reexecute failed instruction while emulating invalid guest state During invalid guest state emulation vcpu cannot enter guest mode to try to reexecute instruction that emulator failed to emulate, so emulation will happen again and again. Prevent that by telling the emulator that instruction reexecution should not be attempted. Signed-off-by: Gleb Natapov --- arch/x86/include/asm/kvm_host.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/x86/include/asm') diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index b2c7263c93b6..82f1dc67782f 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -795,6 +795,7 @@ enum emulation_result { #define EMULTYPE_TRAP_UD (1 << 1) #define EMULTYPE_SKIP (1 << 2) #define EMULTYPE_RETRY (1 << 3) +#define EMULTYPE_NO_REEXECUTE (1 << 4) int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2, int emulation_type, void *insn, int insn_len); -- cgit v1.2.3-55-g7522