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KVM: arm64: Use kvm_write_guest_lock when init stolen time 

There is a lock version kvm_write_guest. Use it to simplify code.

Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Link: https://lore.kernel.org/r/20200817110728.12196-3-zhukeqian1@huawei.com
This commit is contained in:
Keqian Zhu 2020-08-17 19:07:28 +08:00 committed by Marc Zyngier
parent 9455854321
commit 652d0b701d
1 changed files with 1 additions and 5 deletions
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6
arch/arm64/kvm/pvtime.c
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@ -53,7 +53,6 @@ gpa_t kvm_init_stolen_time(struct kvm_vcpu *vcpu)
struct pvclock_vcpu_stolen_time init_values = {};
struct kvm *kvm = vcpu->kvm;
u64 base = vcpu->arch.steal.base;
int idx;
if (base == GPA_INVALID)
return base;
@ -63,10 +62,7 @@ gpa_t kvm_init_stolen_time(struct kvm_vcpu *vcpu)
* the feature enabled.
*/
vcpu->arch.steal.last_steal = current->sched_info.run_delay;
idx = srcu_read_lock(&kvm->srcu);
kvm_write_guest(kvm, base, &init_values, sizeof(init_values));
srcu_read_unlock(&kvm->srcu, idx);
kvm_write_guest_lock(kvm, base, &init_values, sizeof(init_values));
return base;
}