From: Paolo Bonzini <pbonzini@redhat.com>
To: Wanpeng Li <kernellwp@gmail.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Subject: Re: [PATCH 2/3] KVM: X86: Implement PV sched yield hypercall
Date: Mon, 27 May 2019 13:53:58 +0200 [thread overview]
Message-ID: <0b8525d8-e26b-e4df-508d-b6a4d9c06a76@redhat.com> (raw)
In-Reply-To: <1558953255-9432-3-git-send-email-wanpengli@tencent.com>
On 27/05/19 12:34, Wanpeng Li wrote:
> + rcu_read_lock();
> + map = rcu_dereference(kvm->arch.apic_map);
> + target = map->phys_map[dest_id]->vcpu;
> + rcu_read_unlock();
> +
> + kvm_vcpu_yield_to(target);
This needs to check that map->phys_map[dest_id] is not NULL.
Paolo
next prev parent reply other threads:[~2019-05-27 11:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-27 10:34 [PATCH 0/3] KVM: Yield to IPI target if necessary Wanpeng Li
2019-05-27 10:34 ` [PATCH 1/3] KVM: X86: Implement PV sched yield in linux guest Wanpeng Li
2019-05-27 10:34 ` [PATCH 2/3] KVM: X86: Implement PV sched yield hypercall Wanpeng Li
2019-05-27 11:53 ` Paolo Bonzini [this message]
2019-05-28 0:54 ` Wanpeng Li
2019-05-27 10:34 ` [PATCH 3/3] KVM: X86: Expose PV_SCHED_YIELD CPUID feature bit to guest Wanpeng Li
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