From: Paolo Bonzini <pbonzini@redhat.com>
To: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Jason Wang <jasowang@redhat.com>,
gleb@kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, mst@redhat.com
Subject: Re: [PATCH V6 6/6] kvm: add fast mmio capabilitiy
Date: Tue, 15 Sep 2015 18:47:21 +0200 [thread overview]
Message-ID: <55F84B99.7020903@redhat.com> (raw)
In-Reply-To: <20150915184444.6cc6e648.cornelia.huck@de.ibm.com>
On 15/09/2015 18:44, Cornelia Huck wrote:
>> > Can you explain why? If there is any non-zero valid length, "wildcard
>> > length" (represented by zero) would also make sense.
> What is a wildcard match supposed to mean in this case? The datamatch
> field contains the queue index for the device specified in the address
> field. The hypercall interface associated with the eventfd always has
> device + queue index in its parameters; there is no interface for
> "notify device with all its queues".
Ah, I see. Because all valid virtio-ccw ioeventfds are datamatch, no
valid virtio-ccw ioeventfd is wildcard-length.
Paolo
next prev parent reply other threads:[~2015-09-15 16:47 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-15 6:41 [PATCH V6 0/6] Fast mmio eventfd fixes Jason Wang
2015-09-15 6:41 ` [PATCH V6 1/6] kvm: don't try to register to KVM_FAST_MMIO_BUS for non mmio eventfd Jason Wang
2015-09-15 7:05 ` Cornelia Huck
2015-09-15 6:41 ` [PATCH V6 2/6] kvm: factor out core eventfd assign/deassign logic Jason Wang
2015-09-15 7:07 ` Cornelia Huck
2015-09-15 6:41 ` [PATCH V6 3/6] kvm: fix double free for fast mmio eventfd Jason Wang
2015-09-15 7:13 ` Cornelia Huck
2015-09-15 6:41 ` [PATCH V6 4/6] kvm: fix zero length mmio searching Jason Wang
2015-09-15 7:52 ` Cornelia Huck
2015-09-15 6:41 ` [PATCH V6 5/6] kvm: add tracepoint for fast mmio Jason Wang
2015-09-15 6:41 ` [PATCH V6 6/6] kvm: add fast mmio capabilitiy Jason Wang
2015-09-15 15:07 ` Paolo Bonzini
2015-09-15 16:13 ` Cornelia Huck
2015-09-15 16:29 ` Paolo Bonzini
2015-09-15 16:44 ` Cornelia Huck
2015-09-15 16:47 ` Paolo Bonzini [this message]
2015-09-15 15:08 ` [PATCH V6 0/6] Fast mmio eventfd fixes Paolo Bonzini
2015-09-15 19:26 ` Michael S. Tsirkin
2015-09-16 8:11 ` Paolo Bonzini
2015-11-08 17:11 ` Michael S. Tsirkin
2015-11-09 4:35 ` Jason Wang
2015-11-09 20:19 ` Michael S. Tsirkin
2015-11-10 6:25 ` Jason Wang
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