From: aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Wed, 1 Oct 2008 21:46:23 +0000 (+0000)
Subject: qemu: improve scsi dma speed by increasing the dma buffer size
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=f0f72ffe64d5ff1cfd625dae76e46342e1e5258e;p=qmiga%2Fqemu.git

qemu: improve scsi dma speed by increasing the dma buffer size

taken from Xen 17267:f4a92f0db20f, original patch by Samuel Thibault.

Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5385 c046a42c-6fe2-441c-8c8c-71466251a162
---

diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index 16b32153b5..7e5204866b 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -34,7 +34,7 @@ do { fprintf(stderr, "scsi-disk: " fmt , ##args); } while (0)
 #define SENSE_HARDWARE_ERROR  4
 #define SENSE_ILLEGAL_REQUEST 5
 
-#define SCSI_DMA_BUF_SIZE    65536
+#define SCSI_DMA_BUF_SIZE    131072
 
 typedef struct SCSIRequest {
     SCSIDeviceState *dev;