aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorPeter Maydell <peter.maydell@linaro.org>2017-04-11 10:03:51 +0100
committerPeter Maydell <peter.maydell@linaro.org>2017-04-11 10:03:51 +0100
commit17fa24b79ceaa8258e415822cf2e2cb23cf3facb (patch)
tree6977d943899f3f100015250ec5ba08f0e1531e40
parentc322fdd41ad5b313dab0b674154a22b3c665acce (diff)
parent86dbcdd9c7590d06db89ca256c5eaf0b4aba8858 (diff)
Merge remote-tracking branch 'remotes/kraxel/tags/pull-fixes-20170411-1' into staging
qxl: bugfixes. # gpg: Signature made Tue 11 Apr 2017 08:00:00 BST # gpg: using RSA key 0x4CB6D8EED3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * remotes/kraxel/tags/pull-fixes-20170411-1: qxl: add migration blocker to avoid pre-save assert qxl: switch display on entering VGA Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--hw/display/qxl.c32
-rw-r--r--hw/display/qxl.h1
2 files changed, 33 insertions, 0 deletions
diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index 0d02f0efe6..9feae78e4e 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -26,6 +26,7 @@
#include "qemu/queue.h"
#include "qemu/atomic.h"
#include "sysemu/sysemu.h"
+#include "migration/migration.h"
#include "trace.h"
#include "qxl.h"
@@ -639,6 +640,30 @@ static int interface_get_command(QXLInstance *sin, struct QXLCommandExt *ext)
qxl->guest_primary.commands++;
qxl_track_command(qxl, ext);
qxl_log_command(qxl, "cmd", ext);
+ {
+ /*
+ * Windows 8 drivers place qxl commands in the vram
+ * (instead of the ram) bar. We can't live migrate such a
+ * guest, so add a migration blocker in case we detect
+ * this, to avoid triggering the assert in pre_save().
+ *
+ * https://cgit.freedesktop.org/spice/win32/qxl-wddm-dod/commit/?id=f6e099db39e7d0787f294d5fd0dce328b5210faa
+ */
+ void *msg = qxl_phys2virt(qxl, ext->cmd.data, ext->group_id);
+ if (msg != NULL && (
+ msg < (void *)qxl->vga.vram_ptr ||
+ msg > ((void *)qxl->vga.vram_ptr + qxl->vga.vram_size))) {
+ if (!qxl->migration_blocker) {
+ Error *local_err = NULL;
+ error_setg(&qxl->migration_blocker,
+ "qxl: guest bug: command not in ram bar");
+ migrate_add_blocker(qxl->migration_blocker, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ }
+ }
+ }
+ }
trace_qxl_ring_command_get(qxl->id, qxl_mode_to_string(qxl->mode));
return true;
default:
@@ -1146,6 +1171,7 @@ static void qxl_enter_vga_mode(PCIQXLDevice *d)
update_displaychangelistener(&d->ssd.dcl, GUI_REFRESH_INTERVAL_DEFAULT);
qemu_spice_create_host_primary(&d->ssd);
d->mode = QXL_MODE_VGA;
+ qemu_spice_display_switch(&d->ssd, d->ssd.ds);
vga_dirty_log_start(&d->vga);
graphic_hw_update(d->vga.con);
}
@@ -1235,6 +1261,12 @@ static void qxl_hard_reset(PCIQXLDevice *d, int loadvm)
qemu_spice_create_host_memslot(&d->ssd);
qxl_soft_reset(d);
+ if (d->migration_blocker) {
+ migrate_del_blocker(d->migration_blocker);
+ error_free(d->migration_blocker);
+ d->migration_blocker = NULL;
+ }
+
if (startstop) {
qemu_spice_display_start();
}
diff --git a/hw/display/qxl.h b/hw/display/qxl.h
index d2d49dd933..77e5a36dc5 100644
--- a/hw/display/qxl.h
+++ b/hw/display/qxl.h
@@ -40,6 +40,7 @@ typedef struct PCIQXLDevice {
uint32_t cmdlog;
uint32_t guest_bug;
+ Error *migration_blocker;
enum qxl_mode mode;
uint32_t cmdflags;