Hi
On Mon, Apr 10, 2017 at 8:58 AM Gerd Hoffmann <email address hidden> wrote:
> Cc: <email address hidden> > Signed-off-by: Gerd Hoffmann <email address hidden> > --- > hw/display/qxl.h | 1 + > hw/display/qxl.c | 22 ++++++++++++++++++++++ > 2 files changed, 23 insertions(+) > > diff --git a/hw/display/qxl.h b/hw/display/qxl.h > index d2d49dd..77e5a36 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; > diff --git a/hw/display/qxl.c b/hw/display/qxl.c > index c31b293..74ebeb9 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 +640,27 @@ 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); > + } >
Should the blocker be removed on reset?
Looks and works ok otherwise
> + } > + } > trace_qxl_ring_command_get(qxl->id, > qxl_mode_to_string(qxl->mode)); > return true; > default: > -- > 2.9.3 > > -- Marc-André Lureau
Hi
On Mon, Apr 10, 2017 at 8:58 AM Gerd Hoffmann <email address hidden> wrote:
> Cc: <email address hidden> +++++++ +++++++ + migration. h" get_command( QXLInstance *sin, primary. commands+ +; command( qxl, ext); command( qxl, "cmd", ext); /cgit.freedeskt op.org/ spice/win32/ qxl-wddm- dod/commit/ ?id=f6e099db39e 7d0787f294d5fd0 dce328b5210faa vram_size) )) { migration_ blocker) { &qxl->migration _blocker, add_blocker( qxl->migration_ blocker,
> Signed-off-by: Gerd Hoffmann <email address hidden>
> ---
> hw/display/qxl.h | 1 +
> hw/display/qxl.c | 22 +++++++
> 2 files changed, 23 insertions(+)
>
> diff --git a/hw/display/qxl.h b/hw/display/qxl.h
> index d2d49dd..77e5a36 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;
> diff --git a/hw/display/qxl.c b/hw/display/qxl.c
> index c31b293..74ebeb9 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/
> #include "trace.h"
>
> #include "qxl.h"
> @@ -639,6 +640,27 @@ static int interface_
> struct QXLCommandExt *ext)
> qxl->guest_
> qxl_track_
> qxl_log_
> + {
> + /*
> + * 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:/
> + */
> + 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.
> + if (!qxl->
> + Error *local_err = NULL;
> + error_setg(
> + "qxl: guest bug: command not in ram bar");
> + migrate_
> &local_err);
> + }
>
Should the blocker be removed on reset?
Looks and works ok otherwise
> + } ring_command_ get(qxl- >id, to_string( qxl->mode) );
> + }
> trace_qxl_
> qxl_mode_
> return true;
> default:
> --
> 2.9.3
>
> --
Marc-André Lureau