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[Qemu-devel] [PATCH v2 11/22] cirrus: wrap memory update in a transactio
From: |
Avi Kivity |
Subject: |
[Qemu-devel] [PATCH v2 11/22] cirrus: wrap memory update in a transaction |
Date: |
Wed, 24 Aug 2011 16:40:48 +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 v2 08/22] sysbus: add sysbus_add_memory_overlap(), (continued)
- [Qemu-devel] [PATCH v2 10/22] leon3: convert to memory API, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 22/22] milkymist: convert to memory API, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 20/22] milkymist-minimac2: convert to memory API, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 09/22] integratorcp: convert to memory API (RAM/flash only), Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 03/22] pci_host: convert conf index and data ports to memory API, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 06/22] armv7m: convert to memory API, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 07/22] axis_dev88: convert to memory API (RAM only), Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 19/22] mcf5208: convert to memory API, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 11/22] cirrus: wrap memory update in a transaction,
Avi Kivity <=
- [Qemu-devel] [PATCH v2 16/22] g364fb: convert to memory API, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 17/22] lm32_boards: convert to memory API, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 13/22] Makefile.hw: allow hw/ files to include glib headers, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 05/22] an5206: convert to memory API, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 04/22] ReadWriteHandler: remove, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 12/22] piix_pci: wrap memory update in a transaction, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 14/22] pflash_cfi01/pflash_cfi02: convert to memory API, Avi Kivity, 2011/08/24
- [Qemu-devel] [PATCH v2 18/22] mainstone: convert to memory API, Avi Kivity, 2011/08/24