From: Keqian Zhu <zhukeqian1@huawei.com>
To: <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<kvmarm@lists.cs.columbia.edu>, <kvm@vger.kernel.org>
Cc: Marc Zyngier <maz@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, James Morse <james.morse@arm.com>,
"Suzuki K Poulose" <suzuki.poulose@arm.com>,
Steven Price <steven.price@arm.com>, <wanghaibin.wang@huawei.com>,
Keqian Zhu <zhukeqian1@huawei.com>
Subject: [PATCH 3/3] KVM: arm64: Use kvm_write_guest_lock when init stolen time
Date: Mon, 17 Aug 2020 11:37:29 +0800 [thread overview]
Message-ID: <20200817033729.10848-4-zhukeqian1@huawei.com> (raw)
In-Reply-To: <20200817033729.10848-1-zhukeqian1@huawei.com>
There is a lock version kvm_write_guest. Use it to simplify code.
Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
---
arch/arm64/kvm/pvtime.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/arch/arm64/kvm/pvtime.c b/arch/arm64/kvm/pvtime.c
index f7b52ce..2b24e7f 100644
--- a/arch/arm64/kvm/pvtime.c
+++ b/arch/arm64/kvm/pvtime.c
@@ -55,7 +55,6 @@ 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;
@@ -66,10 +65,7 @@ gpa_t kvm_init_stolen_time(struct kvm_vcpu *vcpu)
*/
vcpu->arch.steal.steal = 0;
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;
}
--
1.8.3.1
next prev parent reply other threads:[~2020-08-17 3:38 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-17 3:37 [PATCH 0/3] KVM: arm64: Some fixes and code adjustments for pvtime ST Keqian Zhu
2020-08-17 3:37 ` [PATCH 1/3] KVM: arm64: Some fixes of PV-time interface document Keqian Zhu
2020-08-17 8:47 ` Andrew Jones
2020-08-17 9:02 ` zhukeqian
2020-08-17 9:39 ` Steven Price
2020-08-17 3:37 ` [PATCH 2/3] KVM: uapi: Remove KVM_DEV_TYPE_ARM_PV_TIME in kvm_device_type Keqian Zhu
2020-08-17 7:39 ` Marc Zyngier
2020-08-17 8:43 ` zhukeqian
2020-08-17 9:49 ` Steven Price
2020-08-17 10:56 ` zhukeqian
2020-08-17 3:37 ` Keqian Zhu [this message]
2020-08-17 8:52 ` [PATCH 3/3] KVM: arm64: Use kvm_write_guest_lock when init stolen time Andrew Jones
2020-08-17 9:53 ` Steven Price
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