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[Qemu-devel] [PATCH] virtio-vga: adapt to page-per-vq=off
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PATCH] virtio-vga: adapt to page-per-vq=off |
Date: |
Thu, 8 Sep 2016 09:16:52 +0200 |
Signed-off-by: Gerd Hoffmann <address@hidden>
---
hw/display/virtio-vga.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/hw/display/virtio-vga.c b/hw/display/virtio-vga.c
index 5b510a1..f77b401 100644
--- a/hw/display/virtio-vga.c
+++ b/hw/display/virtio-vga.c
@@ -122,6 +122,17 @@ static void virtio_vga_realize(VirtIOPCIProxy *vpci_dev,
Error **errp)
*/
vpci_dev->modern_mem_bar = 2;
vpci_dev->msix_bar = 4;
+
+ if (!(vpci_dev->flags & VIRTIO_PCI_FLAG_PAGE_PER_VQ)) {
+ /*
+ * with page-per-vq=off there is no padding space we can use
+ * for the stdvga registers. Make the common and isr regions
+ * smaller then.
+ */
+ vpci_dev->common.size /= 2;
+ vpci_dev->isr.size /= 2;
+ }
+
offset = memory_region_size(&vpci_dev->modern_bar);
offset -= vpci_dev->notify.size;
vpci_dev->notify.offset = offset;
--
1.8.3.1
- [Qemu-devel] [PATCH] virtio-vga: adapt to page-per-vq=off,
Gerd Hoffmann <=