linux-kernel - [PATCH RFC v7 08/14] fixup! vhost: use batched get_vq

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200610113515.1497099-9-mst@redhat.com>
Date:   Wed, 10 Jun 2020 07:36:16 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, Jason Wang <jasowang@...hat.com>,
        eperezma@...hat.com
Subject: [PATCH RFC v7 08/14] fixup! vhost: use batched get_vq_desc version

---
 drivers/vhost/vhost.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 7a587b13095c..03e6bca02288 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -2205,10 +2205,6 @@ static int fetch_buf(struct vhost_virtqueue *vq)
 	last_avail_idx = vq->last_avail_idx;
 
 	if (unlikely(vq->avail_idx == vq->last_avail_idx)) {
-		/* If we already have work to do, don't bother re-checking. */
-		if (likely(vq->ndescs))
-			return 1;
-
 		if (unlikely(vhost_get_avail_idx(vq, &avail_idx))) {
 			vq_err(vq, "Failed to access avail idx at %p\n",
 				&vq->avail->idx);
-- 
MST