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| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-08-07 11:49:39 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-09-10 10:45:43 +0300 |
| commit | 3d62d9aa9868865217ce3a1b70d6039a98b50820 (patch) | |
| tree | 5270dbea731c7a011028b7df3ef83b330022787d /arch/x86/kvm | |
| parent | 34f80cfad59ee587e374cbaf5f2a31d9f5015404 (diff) | |
| download | linux-3d62d9aa9868865217ce3a1b70d6039a98b50820.tar.gz linux-3d62d9aa9868865217ce3a1b70d6039a98b50820.tar.bz2 linux-3d62d9aa9868865217ce3a1b70d6039a98b50820.zip | |
KVM: SVM: clean up nested_svm_exit_handled_msr
This patch changes nested svm to call nested_svm_exit_handled_msr
directly and not through nested_svm_do.
[alex: fix oops due to nested kmap_atomics]
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/svm.c | 38 |
1 files changed, 21 insertions, 17 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 5e55a1bdd13d..e85d79142ffc 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1483,18 +1483,21 @@ static int nested_svm_do(struct vcpu_svm *svm, return retval; } -static int nested_svm_exit_handled_msr(struct vcpu_svm *svm, - void *arg1, void *arg2, - void *opaque) +static bool nested_svm_exit_handled_msr(struct vcpu_svm *svm) { - struct vmcb *nested_vmcb = (struct vmcb *)arg1; - u8 *msrpm = (u8 *)arg2; - u32 t0, t1; - u32 msr = svm->vcpu.arch.regs[VCPU_REGS_RCX]; u32 param = svm->vmcb->control.exit_info_1 & 1; + u32 msr = svm->vcpu.arch.regs[VCPU_REGS_RCX]; + bool ret = false; + u32 t0, t1; + u8 *msrpm; - if (!(nested_vmcb->control.intercept & (1ULL << INTERCEPT_MSR_PROT))) - return 0; + if (!(svm->nested.intercept & (1ULL << INTERCEPT_MSR_PROT))) + return false; + + msrpm = nested_svm_map(svm, svm->nested.vmcb_msrpm, KM_USER0); + + if (!msrpm) + goto out; switch (msr) { case 0 ... 0x1fff: @@ -1512,13 +1515,16 @@ static int nested_svm_exit_handled_msr(struct vcpu_svm *svm, t0 %= 8; break; default: - return 1; - break; + ret = true; + goto out; } - if (msrpm[t1] & ((1 << param) << t0)) - return 1; - return 0; + ret = msrpm[t1] & ((1 << param) << t0); + +out: + nested_svm_unmap(msrpm, KM_USER0); + + return ret; } static int nested_svm_exit_handled(struct vcpu_svm *svm, bool kvm_override) @@ -1548,9 +1554,7 @@ static int nested_svm_exit_handled(struct vcpu_svm *svm, bool kvm_override) switch (exit_code) { case SVM_EXIT_MSR: - if (nested_svm_do(svm, svm->nested.vmcb, svm->nested.vmcb_msrpm, - NULL, nested_svm_exit_handled_msr)) - vmexit = true; + vmexit = nested_svm_exit_handled_msr(svm); break; case SVM_EXIT_READ_CR0 ... SVM_EXIT_READ_CR8: { u32 cr_bits = 1 << (exit_code - SVM_EXIT_READ_CR0); |