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| author | Laurent Vivier <Laurent.Vivier@bull.net> | 2007-09-18 11:27:37 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-01-30 17:52:47 +0200 |
| commit | 3427318fd2244737a466a06a93c5fe579852f871 (patch) | |
| tree | 7c6760dbbdd067498c470e6e4f711e5baeef491c /drivers/kvm/vmx.c | |
| parent | 1be3aa47182e94944e57b176a5c4ee4e74f1ce33 (diff) | |
| download | lwn-3427318fd2244737a466a06a93c5fe579852f871.tar.gz lwn-3427318fd2244737a466a06a93c5fe579852f871.zip | |
KVM: Call x86_decode_insn() only when needed
Move emulate_ctxt to kvm_vcpu to keep emulate context when we exit from kvm
module. Call x86_decode_insn() only when needed. Modify x86_emulate_insn() to
not modify the context if it must be re-entered.
Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/vmx.c')
| -rw-r--r-- | drivers/kvm/vmx.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index 47c827d3007c..91768d5dbfb9 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -1750,7 +1750,7 @@ static int handle_rmode_exception(struct kvm_vcpu *vcpu, * 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) + if (emulate_instruction(vcpu, NULL, 0, 0, 0) == EMULATE_DONE) return 1; return 0; } @@ -1787,7 +1787,7 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) } if (is_invalid_opcode(intr_info)) { - er = emulate_instruction(vcpu, kvm_run, 0, 0); + er = emulate_instruction(vcpu, kvm_run, 0, 0, 0); if (er != EMULATE_DONE) vmx_inject_ud(vcpu); @@ -1812,7 +1812,7 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) return 1; } - er = emulate_instruction(vcpu, kvm_run, cr2, error_code); + er = emulate_instruction(vcpu, kvm_run, cr2, error_code, 0); mutex_unlock(&vcpu->kvm->lock); switch (er) { @@ -1873,7 +1873,8 @@ static int handle_io(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) string = (exit_qualification & 16) != 0; if (string) { - if (emulate_instruction(vcpu, kvm_run, 0, 0) == EMULATE_DO_MMIO) + if (emulate_instruction(vcpu, + kvm_run, 0, 0, 0) == EMULATE_DO_MMIO) return 0; return 1; } |