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From: Paolo Bonzini <pbonzini@redhat.com>
To: "Roman Kagan" <rkagan@virtuozzo.com>,
	kvm@vger.kernel.org, "Radim Krčmář" <rkrcmar@redhat.com>
Cc: "Denis V. Lunev" <den@openvz.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	David Hildenbrand <david@redhat.com>
Subject: Re: [PATCH v5 2/2] kvm: x86: hyperv: guest->host event signaling via eventfd
Date: Tue, 12 Dec 2017 17:22:20 +0100	[thread overview]
Message-ID: <938118d0-9296-0c0c-3251-275778c71c05@redhat.com> (raw)
In-Reply-To: <20171212160742.793-3-rkagan@virtuozzo.com>

On 12/12/2017 17:07, Roman Kagan wrote:
> +		idx = srcu_read_lock(&vcpu->kvm->srcu);
> +		ret = kvm_vcpu_read_guest(vcpu, gpa, &param, sizeof(param));
> +		srcu_read_unlock(&vcpu->kvm->srcu, idx);
> +

The lock/unlock is not needed (vcpu_enter_guest -> vmx_handle_exit ->
handle_vmcall -> kvm_emulate_hypercall -> kvm_hv_hypercall ->
kvm_hvcall_signal_event).  I'll drop it.

Thanks,

  reply	other threads:[~2017-12-12 16:22 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-12 16:07 [PATCH v5 0/2] kvm: x86: hyperv: guest->host event signaling via eventfd Roman Kagan
2017-12-12 16:07 ` [PATCH v5 1/2] kvm: x86: factor out kvm.arch.hyperv (de)init Roman Kagan
2017-12-12 16:07 ` [PATCH v5 2/2] kvm: x86: hyperv: guest->host event signaling via eventfd Roman Kagan
2017-12-12 16:22   ` Paolo Bonzini [this message]
2017-12-12 16:29     ` David Hildenbrand
2017-12-12 18:18       ` Roman Kagan
2017-12-12 18:20         ` David Hildenbrand
2017-12-13  8:41           ` Roman Kagan
2017-12-13  9:35             ` David Hildenbrand
2017-12-13 10:00               ` Roman Kagan
2017-12-12 17:03     ` Roman Kagan
2017-12-13  9:51   ` David Hildenbrand
2017-12-13 11:04     ` Roman Kagan
2017-12-13 11:14       ` David Hildenbrand
2017-12-13 12:16         ` Roman Kagan
2017-12-13  9:55   ` David Hildenbrand
2017-12-13 11:44     ` Roman Kagan
2017-12-13 11:46       ` David Hildenbrand
2017-12-13 11:51         ` David Hildenbrand
2017-12-13 11:57           ` David Hildenbrand
2017-12-13 12:58             ` Roman Kagan

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