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[Qemu-devel] [PATCH 09/11] xen: only track the linear framebuffer
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PATCH 09/11] xen: only track the linear framebuffer |
Date: |
Sun, 19 Jun 2011 05:39:48 +0200 |
From: Stefano Stabellini <address@hidden>
Xen can only do dirty bit tracking for one memory region, so we should
explicitly avoid trying to track anything but the vga vram region.
Signed-off-by: Stefano Stabellini <address@hidden>
Signed-off-by: Alexander Graf <address@hidden>
---
xen-all.c | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/xen-all.c b/xen-all.c
index 75a82c2..fe75ddd 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -215,6 +215,7 @@ static int xen_add_to_physmap(XenIOState *state,
int rc = 0;
XenPhysmap *physmap = NULL;
target_phys_addr_t pfn, start_gpfn;
+ RAMBlock *block;
if (get_physmapping(state, start_addr, size)) {
return 0;
@@ -223,6 +224,19 @@ static int xen_add_to_physmap(XenIOState *state,
return -1;
}
+ /* Xen can only handle a single dirty log region for now and we want
+ * the linear framebuffer to be that region.
+ * Avoid tracking any regions that is not videoram and avoid tracking
+ * the legacy vga region. */
+ QLIST_FOREACH(block, &ram_list.blocks, next) {
+ if (!strcmp(block->idstr, "vga.vram") && block->offset == phys_offset
+ && start_addr > 0xbffff) {
+ goto go_physmap;
+ }
+ }
+ return -1;
+
+go_physmap:
DPRINTF("mapping vram to %llx - %llx, from %llx\n",
start_addr, start_addr + size, phys_offset);
--
1.6.0.2
- [Qemu-devel] [PULL] Xen Patch Queue, Alexander Graf, 2011/06/20
- [Qemu-devel] [PATCH 09/11] xen: only track the linear framebuffer,
Alexander Graf <=
- [Qemu-devel] [PATCH 11/11] xen: Add the Xen platform pci device, Alexander Graf, 2011/06/20
- [Qemu-devel] [PATCH 10/11] xen: fix interrupt routing, Alexander Graf, 2011/06/20
- [Qemu-devel] [PATCH 02/11] xen: Introduce VGA sync dirty bitmap support, Alexander Graf, 2011/06/20
- [Qemu-devel] [PATCH 07/11] xen: mapcache performance improvements, Alexander Graf, 2011/06/20
- [Qemu-devel] [PATCH 01/11] xen: Add xc_domain_add_to_physmap to xen_interface., Alexander Graf, 2011/06/20
- [Qemu-devel] [PATCH 08/11] cirrus_vga: reset lfb_addr after a pci config write if the BAR is unmapped, Alexander Graf, 2011/06/20
- [Qemu-devel] [PATCH 06/11] exec.c: refactor cpu_physical_memory_map, Alexander Graf, 2011/06/20