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From 4a19f6aff24c38ede727026ee6695e561aef1366 Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Thu, 12 Sep 2013 09:12:56 +0200
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Subject: [PATCH 01/11] qxl: fix local renderer
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RH-Author: Gerd Hoffmann <kraxel@redhat.com>
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Message-id: <1378977176-19133-2-git-send-email-kraxel@redhat.com>
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Patchwork-id: 54333
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O-Subject: [RHEL-7 qemu-kvm PATCH 1/1] qxl: fix local renderer
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Bugzilla: 1005036
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Markus Armbruster <armbru@redhat.com>
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RH-Acked-by: Hans de Goede <hdegoede@redhat.com>
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The local spice renderer assumes the primary surface is located at the
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start of the "ram" bar. This used to be a requirement in qxl hardware
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revision 1. In revision 2+ this is relaxed. Nevertheless guest drivers
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continued to use the traditional location, for historical and backward
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compatibility reasons. The qxl kms driver doesn't though as it depends
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on qxl revision 4+ anyway.
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Result is that local rendering is hosed for recent linux guests, you'll
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get pixel garbage with non-spice ui (gtk, sdl, vnc) and when doing
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screendumps. Fix that by doing a proper mapping of the guest-specified
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memory location.
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https://bugzilla.redhat.com/show_bug.cgi?id=948717
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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(cherry picked from commit c58c7b959b93b864a27fd6b3646ee1465ab8832b)
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---
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hw/display/qxl-render.c | 15 ++++++++++-----
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1 file changed, 10 insertions(+), 5 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/display/qxl-render.c | 15 ++++++++++-----
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1 files changed, 10 insertions(+), 5 deletions(-)
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diff --git a/hw/display/qxl-render.c b/hw/display/qxl-render.c
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index f511a62..f654476 100644
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--- a/hw/display/qxl-render.c
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+++ b/hw/display/qxl-render.c
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@@ -31,10 +31,6 @@ static void qxl_blit(PCIQXLDevice *qxl, QXLRect *rect)
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if (is_buffer_shared(surface)) {
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return;
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}
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- if (!qxl->guest_primary.data) {
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- trace_qxl_render_blit_guest_primary_initialized();
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- qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
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- }
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trace_qxl_render_blit(qxl->guest_primary.qxl_stride,
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rect->left, rect->right, rect->top, rect->bottom);
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src = qxl->guest_primary.data;
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@@ -104,7 +100,12 @@ static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
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if (qxl->guest_primary.resized) {
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qxl->guest_primary.resized = 0;
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- qxl->guest_primary.data = memory_region_get_ram_ptr(&qxl->vga.vram);
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+ qxl->guest_primary.data = qxl_phys2virt(qxl,
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+ qxl->guest_primary.surface.mem,
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+ MEMSLOT_GROUP_GUEST);
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+ if (!qxl->guest_primary.data) {
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+ return;
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+ }
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qxl_set_rect_to_surface(qxl, &qxl->dirty[0]);
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qxl->num_dirty_rects = 1;
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trace_qxl_render_guest_primary_resized(
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@@ -128,6 +129,10 @@ static void qxl_render_update_area_unlocked(PCIQXLDevice *qxl)
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}
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dpy_gfx_replace_surface(vga->con, surface);
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}
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+
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+ if (!qxl->guest_primary.data) {
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+ return;
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+ }
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for (i = 0; i < qxl->num_dirty_rects; i++) {
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if (qemu_spice_rect_is_empty(qxl->dirty+i)) {
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break;
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--
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1.7.1
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