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[Qemu-devel] [PATCH 13/24] cirrus: wrap memory update in a transaction
From: |
Avi Kivity |
Subject: |
[Qemu-devel] [PATCH 13/24] cirrus: wrap memory update in a transaction |
Date: |
Wed, 24 Aug 2011 13:11:12 +0300 |
This prevents spurious unmapping and remapping of the vga windows,
which reduces performance.
Signed-off-by: Avi Kivity <address@hidden>
---
hw/cirrus_vga.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c
index 4d0ef0d..ec7ea82 100644
--- a/hw/cirrus_vga.c
+++ b/hw/cirrus_vga.c
@@ -2424,6 +2424,7 @@ static void cirrus_update_memory_access(CirrusVGAState *s)
{
unsigned mode;
+ memory_region_transaction_begin();
if ((s->vga.sr[0x17] & 0x44) == 0x44) {
goto generic_io;
} else if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
@@ -2443,6 +2444,7 @@ static void cirrus_update_memory_access(CirrusVGAState *s)
unmap_linear_vram(s);
}
}
+ memory_region_transaction_commit();
}
--
1.7.5.3
- Re: [Qemu-devel] [PATCH 11/24] integratorcp: convert to memory API (RAM/flash only), (continued)
[Qemu-devel] [PATCH 07/24] an5206: convert to memory API, Avi Kivity, 2011/08/24
[Qemu-devel] [PATCH 03/24] sysbus: add helpers to add and delete memory regions to the system bus, Avi Kivity, 2011/08/24
[Qemu-devel] [PATCH 13/24] cirrus: wrap memory update in a transaction,
Avi Kivity <=
[Qemu-devel] [PATCH 12/24] leon3: convert to memory API, Avi Kivity, 2011/08/24
[Qemu-devel] [PATCH 24/24] milkymist: convert to memory API, Avi Kivity, 2011/08/24
[Qemu-devel] [PATCH 15/24] Makefile.hw: allow hw/ files to include glib headers, Avi Kivity, 2011/08/24
[Qemu-devel] [PATCH 04/24] pci_host: convert conf index and data ports to memory API, Avi Kivity, 2011/08/24
[Qemu-devel] [PATCH 06/24] QEMUMachine: pass address space to machine init function, Avi Kivity, 2011/08/24