From 636f4dddfe48ccabaf5198bba440354d6a268d62 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Date: Fri, 9 Oct 2015 17:17:22 +0200 Subject: vhost: document log resizing MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Marc-André Lureau Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Tested-by: Thibaut Collet --- hw/virtio/vhost.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index f14a5c5..f5ecaf0 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -350,6 +350,8 @@ static inline void vhost_dev_log_resize(struct vhost_dev* dev, uint64_t size) uint64_t log_base = (uintptr_t)log->log; int r; + /* inform backend of log switching, this must be done before + releasing the current log, to ensure no logging is lost */ r = dev->vhost_ops->vhost_call(dev, VHOST_SET_LOG_BASE, &log_base); assert(r >= 0); vhost_log_put(dev, true); -- cgit v1.1