From: Roman Kagan <rkagan@virtuozzo.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Thomas Avery <tavery321@gmail.com>
Subject: Re: [PATCH] KVM: hyperv: idr_find needs RCU protection
Date: Tue, 8 May 2018 20:35:51 +0300 [thread overview]
Message-ID: <20180508173550.GD2184@rkaganb.sw.ru> (raw)
In-Reply-To: <1525713900-26152-1-git-send-email-pbonzini@redhat.com>
On Mon, May 07, 2018 at 07:25:00PM +0200, Paolo Bonzini wrote:
> Even though the eventfd is released after the KVM SRCU grace period
> elapses, the conn_to_evt data structure itself is not; it uses RCU
> internally, instead. Fix the read-side critical section to happen
> under rcu_read_lock/unlock; the result is still protected by
> vcpu->kvm->srcu.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> arch/x86/kvm/hyperv.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
prev parent reply other threads:[~2018-05-08 17:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-07 17:25 Paolo Bonzini
2018-05-08 17:35 ` Roman Kagan [this message]
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