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From 9394cbaab7701fe421d5c0168854d39d6a8ecfc2 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 7 Sep 2010 16:45:27 +0200
Subject: [PATCH 39/39] qxl: fix release ring overrun
---
hw/qxl.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/hw/qxl.c b/hw/qxl.c
index 4a15200..8448893 100644
--- a/hw/qxl.c
+++ b/hw/qxl.c
@@ -377,10 +377,10 @@ static inline void qxl_push_free_res(PCIQXLDevice *d)
QXLReleaseRing *ring = &d->ram->release_ring;
uint64_t *item;
-#define QXL_FREE_BUNCH_SIZE 10
+#define QXL_FREE_BUNCH_SIZE 32
- if (SPICE_RING_IS_EMPTY(ring) || (d->num_free_res == QXL_FREE_BUNCH_SIZE &&
- ring->prod - ring->cons + 1 != ring->num_items)) {
+ if (SPICE_RING_IS_EMPTY(ring) || (d->num_free_res >= QXL_FREE_BUNCH_SIZE &&
+ ring->prod - ring->cons + 2 != ring->num_items)) {
int notify;
SPICE_RING_PUSH(ring, notify);
--
1.7.2.3