47 lines
1.7 KiB
Diff
47 lines
1.7 KiB
Diff
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From de25a5f05b76ca99299e09dabe04e7d59b9bed79 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Mon, 12 Jul 2021 10:22:32 -0400
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Subject: [PATCH 12/43] vhost-user: Fix backends without multiqueue support
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RH-Author: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Bugzilla: 1957194
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dev->max_queues was never initialised for backends that don't support
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VHOST_USER_PROTOCOL_F_MQ, so it would use 0 as the maximum number of
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queues to check against and consequently fail for any such backend.
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Set it to 1 if the backend doesn't have multiqueue support.
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Fixes: c90bd505a3e8210c23d69fecab9ee6f56ec4a161
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Message-Id: <20210705171429.29286-1-kwolf@redhat.com>
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Reviewed-by: Cornelia Huck <cohuck@redhat.com>
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Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit 84affad1fd4c5251d7cccf4df43b29e9157983a9)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/virtio/vhost-user.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
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index ee57abe045..53f50adcba 100644
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--- a/hw/virtio/vhost-user.c
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+++ b/hw/virtio/vhost-user.c
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@@ -1908,7 +1908,10 @@ static int vhost_user_backend_init(struct vhost_dev *dev, void *opaque)
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if (err < 0) {
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return err;
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}
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+ } else {
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+ dev->max_queues = 1;
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}
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+
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if (dev->num_queues && dev->max_queues < dev->num_queues) {
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error_report("The maximum number of queues supported by the "
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"backend is %" PRIu64, dev->max_queues);
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--
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2.27.0
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