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kvm: svm: Prefer vcpu->cpu to raw_smp_processor_id()

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The current logical processor id is cached in vcpu->cpu. Use it
instead of raw_smp_processor_id() when a kvm_vcpu struct is available.

Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Oliver Upton <oupton@google.com>
Message-Id: <20200603235623.245638-2-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jim Mattson 2020-06-03 16:56:18 -07:00 committed by Paolo Bonzini
parent a8d908b587
commit 73cd6e5f7f
1 changed files with 3 additions and 6 deletions
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9
arch/x86/kvm/svm/svm.c
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@ -2992,21 +2992,18 @@ static int handle_exit(struct kvm_vcpu *vcpu, fastpath_t exit_fastpath)
static void reload_tss(struct kvm_vcpu *vcpu) static void reload_tss(struct kvm_vcpu *vcpu)
{ {
int cpu = raw_smp_processor_id(); struct svm_cpu_data *sd = per_cpu(svm_data, vcpu->cpu);
struct svm_cpu_data *sd = per_cpu(svm_data, cpu);
sd->tss_desc->type = 9; /* available 32/64-bit TSS */ sd->tss_desc->type = 9; /* available 32/64-bit TSS */
load_TR_desc(); load_TR_desc();
} }
static void pre_svm_run(struct vcpu_svm *svm) static void pre_svm_run(struct vcpu_svm *svm)
{ {
int cpu = raw_smp_processor_id(); struct svm_cpu_data *sd = per_cpu(svm_data, svm->vcpu.cpu);
struct svm_cpu_data *sd = per_cpu(svm_data, cpu);
if (sev_guest(svm->vcpu.kvm)) if (sev_guest(svm->vcpu.kvm))
return pre_sev_run(svm, cpu); return pre_sev_run(svm, svm->vcpu.cpu);
/* FIXME: handle wraparound of asid_generation */ /* FIXME: handle wraparound of asid_generation */
if (svm->asid_generation != sd->asid_generation) if (svm->asid_generation != sd->asid_generation)