38 lines
1.3 KiB
Diff
38 lines
1.3 KiB
Diff
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From 91c827f000a94908b043b5de68eb0cd4fb6ff83d Mon Sep 17 00:00:00 2001
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From: Michael S. Tsirkin <mst@redhat.com>
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Date: Wed, 24 Feb 2010 21:09:58 +0200
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Subject: [PATCH] vhost: fix used logging size math
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Must include used header as well, not only ring
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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---
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hw/vhost.c | 4 +++-
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1 files changed, 3 insertions(+), 1 deletions(-)
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diff --git a/hw/vhost.c b/hw/vhost.c
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index 48034ba..7391bd1 100644
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--- a/hw/vhost.c
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+++ b/hw/vhost.c
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@@ -62,7 +62,8 @@ static int vhost_client_sync_dirty_bitmap(struct CPUPhysMemoryClient *client,
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}
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for (i = 0; i < dev->nvqs; ++i) {
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struct vhost_virtqueue *vq = dev->vqs + i;
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- unsigned size = sizeof(struct vring_used_elem) * vq->num;
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+ unsigned size = offsetof(struct vring_used, ring) +
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+ sizeof(struct vring_used_elem) * vq->num;
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vhost_dev_sync_region(dev, start_addr, end_addr, vq->used_phys,
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range_get_last(vq->used_phys, size));
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}
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@@ -230,6 +231,7 @@ static uint64_t vhost_get_log_size(struct vhost_dev *dev)
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for (i = 0; i < dev->nvqs; ++i) {
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struct vhost_virtqueue *vq = dev->vqs + i;
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uint64_t last = vq->used_phys +
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+ offsetof(struct vring_used, ring) +
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sizeof(struct vring_used_elem) * vq->num - 1;
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log_size = MAX(log_size, last / VHOST_LOG_CHUNK + 1);
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}
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--
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1.6.6.1
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