[Xen-changelog] [qemu-upstream-unstable] qxl: fix local renderer

[patchbot@xxxxxxx]

commit dc0973b5883df7d822b285119691ade8c84dda9c
Author:     Gerd Hoffmann <kraxel@xxxxxxxxxx>
AuthorDate: Thu Sep 5 21:57:19 2013 +0200
Commit:     Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
CommitDate: Tue Sep 24 22:46:18 2013 -0500

    qxl: fix local renderer
    
    The local spice renderer assumes the primary surface is located at the
    start of the "ram" bar.  This used to be a requirement in qxl hardware
    revision 1.  In revision 2+ this is relaxed.  Nevertheless guest drivers
    continued to use the traditional location, for historical and backward
    compatibility reasons.  The qxl kms driver doesn't though as it depends
    on qxl revision 4+ anyway.
    
    Result is that local rendering is hosed for recent linux guests, you'll
    get pixel garbage with non-spice ui (gtk, sdl, vnc) and when doing
    screendumps.  Fix that by doing a proper mapping of the guest-specified
    memory location.
    
    https://bugzilla.redhat.com/show_bug.cgi?id=948717
    
    Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
    (cherry picked from commit c58c7b959b93b864a27fd6b3646ee1465ab8832b)
    
    Signed-off-by: Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
---
 hw/display/qxl-render.c |   15 ++++++++++-----
 1 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/hw/display/qxl-render.c b/hw/display/qxl-render.c
index 269b1a7..d34b0c4 100644
--- a/hw/display/qxl-render.c
+++ b/hw/display/qxl-render.c
@@ -31,10 +31,6 @@ static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect)
     if (is_buffer_shared(surface)) {
         return;
     }
-    if (!qxl->guest_primary.data) {
-        trace_qxl_render_blit_guest_primary_initialized();
-        qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
-    }
     trace_qxl_render_blit(qxl->guest_primary.qxl_stride,
             rect->left, rect->right, rect->top, rect->bottom);
     src = qxl->guest_primary.data;
@@ -104,7 +100,12 @@ static void qxl_render_update_area_unlocked(PCIQXLDevice 
*qxl)
 
     if (qxl->guest_primary.resized) {
         qxl->guest_primary.resized = 0;
-        qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
+        qxl->guest_primary.data = qxl_phys2virt(qxl,
+                                                qxl->guest_primary.surface.mem,
+                                                MEMSLOT_GROUP_GUEST);
+        if (!qxl->guest_primary.data) {
+            return;
+        }
         qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
         qxl->num_dirty_rects = 1;
         trace_qxl_render_guest_primary_resized(
@@ -128,6 +129,10 @@ static void qxl_render_update_area_unlocked(PCIQXLDevice 
*qxl)
         }
         dpy_gfx_replace_surface(vga->con, surface);
     }
+
+    if (!qxl->guest_primary.data) {
+        return;
+    }
     for (i = 0; i < qxl->num_dirty_rects; i++) {
         if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
             break;
--
generated by git-patchbot for /home/xen/git/qemu-upstream-unstable.git

_______________________________________________
Xen-changelog mailing list
Xen-changelog@xxxxxxxxxxxxx
http://lists.xensource.com/xen-changelog