From 4a19f6aff24c38ede727026ee6695e561aef1366 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann <kraxel@redhat.com> Date: Thu, 12 Sep 2013 09:12:56 +0200 Subject: [PATCH 01/11] qxl: fix local renderer RH-Author: Gerd Hoffmann <kraxel@redhat.com> Message-id: <1378977176-19133-2-git-send-email-kraxel@redhat.com> Patchwork-id: 54333 O-Subject: [RHEL-7 qemu-kvm PATCH 1/1] qxl: fix local renderer Bugzilla: 1005036 RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com> RH-Acked-by: Markus Armbruster <armbru@redhat.com> RH-Acked-by: Hans de Goede <hdegoede@redhat.com> 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@redhat.com> (cherry picked from commit c58c7b959b93b864a27fd6b3646ee1465ab8832b) --- hw/display/qxl-render.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com> --- 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 f511a62..f654476 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; -- 1.7.1