* [PULL 0/6] Vga 20210723 patches
@ 2021-07-23 5:54 Gerd Hoffmann
2021-07-23 5:54 ` [PULL 1/6] hw/display/virtio-gpu: Fix memory leak (CID 1453811) Gerd Hoffmann
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: Gerd Hoffmann @ 2021-07-23 5:54 UTC (permalink / raw)
To: qemu-devel; +Cc: Paolo Bonzini, Gerd Hoffmann, Michael S. Tsirkin
The following changes since commit e77c8b8b8e933414ef07dbed04e02973fccffeb0:
Update version for v6.1.0-rc0 release (2021-07-21 17:10:15 +0100)
are available in the Git repository at:
git://git.kraxel.org/qemu tags/vga-20210723-pull-request
for you to fetch changes up to 8a13b9bc0f283caff4333c75bc396a963f47ce5c:
hw/display: fix virgl reset regression (2021-07-22 15:46:54 +0200)
----------------------------------------------------------------
vga: fixes for qxl and virtio-gpu
----------------------------------------------------------------
Gerd Hoffmann (2):
qxl: remove assert in qxl_pre_save.
Revert "qxl: add migration blocker to avoid pre-save assert"
Marc-André Lureau (3):
hw/display: fail early when multiple virgl devices are requested
vl: add virtio-vga-gl to the default_list
hw/display: fix virgl reset regression
Philippe Mathieu-Daudé (1):
hw/display/virtio-gpu: Fix memory leak (CID 1453811)
hw/display/qxl.h | 1 -
include/hw/virtio/virtio-gpu.h | 1 +
hw/display/qxl.c | 35 +++-------------------------------
hw/display/virtio-gpu-gl.c | 27 +++++++++++++++-----------
hw/display/virtio-gpu-virgl.c | 8 ++++++--
hw/display/virtio-gpu.c | 26 ++++++++++---------------
softmmu/vl.c | 1 +
7 files changed, 37 insertions(+), 62 deletions(-)
--
2.31.1
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PULL 1/6] hw/display/virtio-gpu: Fix memory leak (CID 1453811)
2021-07-23 5:54 [PULL 0/6] Vga 20210723 patches Gerd Hoffmann
@ 2021-07-23 5:54 ` Gerd Hoffmann
2021-07-23 5:54 ` [PULL 2/6] qxl: remove assert in qxl_pre_save Gerd Hoffmann
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Gerd Hoffmann @ 2021-07-23 5:54 UTC (permalink / raw)
To: qemu-devel
Cc: Paolo Bonzini, Philippe Mathieu-Daudé,
Gerd Hoffmann, Michael S. Tsirkin
From: Philippe Mathieu-Daudé <philmd@redhat.com>
To avoid leaking memory on the error path, reorder the
code as:
- check the parameters first
- check resource already existing
- finally allocate memory
Reported-by: Coverity (CID 1453811: RESOURCE_LEAK)
Fixes: e0933d91b1c ("virtio-gpu: Add virtio_gpu_resource_create_blob")
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210531101928.1662732-1-philmd@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/display/virtio-gpu.c | 26 ++++++++++----------------
1 file changed, 10 insertions(+), 16 deletions(-)
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 6b7f643951fe..990e71fd4062 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -340,37 +340,31 @@ static void virtio_gpu_resource_create_blob(VirtIOGPU *g,
return;
}
- res = virtio_gpu_find_resource(g, cblob.resource_id);
- if (res) {
- qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n",
- __func__, cblob.resource_id);
- cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
- return;
- }
-
- res = g_new0(struct virtio_gpu_simple_resource, 1);
- res->resource_id = cblob.resource_id;
- res->blob_size = cblob.size;
-
if (cblob.blob_mem != VIRTIO_GPU_BLOB_MEM_GUEST &&
cblob.blob_flags != VIRTIO_GPU_BLOB_FLAG_USE_SHAREABLE) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid memory type\n",
__func__);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
- g_free(res);
return;
}
- if (res->iov) {
- cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
+ if (virtio_gpu_find_resource(g, cblob.resource_id)) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n",
+ __func__, cblob.resource_id);
+ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
+ res = g_new0(struct virtio_gpu_simple_resource, 1);
+ res->resource_id = cblob.resource_id;
+ res->blob_size = cblob.size;
+
ret = virtio_gpu_create_mapping_iov(g, cblob.nr_entries, sizeof(cblob),
cmd, &res->addrs, &res->iov,
&res->iov_cnt);
- if (ret != 0) {
+ if (ret != 0 || res->iov) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
+ g_free(res);
return;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PULL 2/6] qxl: remove assert in qxl_pre_save.
2021-07-23 5:54 [PULL 0/6] Vga 20210723 patches Gerd Hoffmann
2021-07-23 5:54 ` [PULL 1/6] hw/display/virtio-gpu: Fix memory leak (CID 1453811) Gerd Hoffmann
@ 2021-07-23 5:54 ` Gerd Hoffmann
2021-07-23 5:54 ` [PULL 3/6] Revert "qxl: add migration blocker to avoid pre-save assert" Gerd Hoffmann
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Gerd Hoffmann @ 2021-07-23 5:54 UTC (permalink / raw)
To: qemu-devel
Cc: Paolo Bonzini, Gerd Hoffmann, Marc-André Lureau, Michael S. Tsirkin
Since commit 551dbd0846d2 ("migration: check pre_save return in
vmstate_save_state") the pre_save hook can fail. So lets finally
use that to drop the guest-triggerable assert in qxl_pre_save().
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210721093347.338536-2-kraxel@redhat.com>
---
hw/display/qxl.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index 84f99088e0a0..3867b94fe236 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -2283,7 +2283,9 @@ static int qxl_pre_save(void *opaque)
} else {
d->last_release_offset = (uint8_t *)d->last_release - ram_start;
}
- assert(d->last_release_offset < d->vga.vram_size);
+ if (d->last_release_offset < d->vga.vram_size) {
+ return 1;
+ }
return 0;
}
--
2.31.1
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PULL 3/6] Revert "qxl: add migration blocker to avoid pre-save assert"
2021-07-23 5:54 [PULL 0/6] Vga 20210723 patches Gerd Hoffmann
2021-07-23 5:54 ` [PULL 1/6] hw/display/virtio-gpu: Fix memory leak (CID 1453811) Gerd Hoffmann
2021-07-23 5:54 ` [PULL 2/6] qxl: remove assert in qxl_pre_save Gerd Hoffmann
@ 2021-07-23 5:54 ` Gerd Hoffmann
2021-07-23 5:54 ` [PULL 4/6] hw/display: fail early when multiple virgl devices are requested Gerd Hoffmann
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Gerd Hoffmann @ 2021-07-23 5:54 UTC (permalink / raw)
To: qemu-devel
Cc: Paolo Bonzini, Gerd Hoffmann, Marc-André Lureau, Michael S. Tsirkin
This reverts commit 86dbcdd9c7590d06db89ca256c5eaf0b4aba8858.
The pre-save assert is gone now, so the migration blocker
is not needed any more.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210721093347.338536-3-kraxel@redhat.com>
---
hw/display/qxl.h | 1 -
hw/display/qxl.c | 31 -------------------------------
2 files changed, 32 deletions(-)
diff --git a/hw/display/qxl.h b/hw/display/qxl.h
index 379d3304abc1..30d21f4d0bdc 100644
--- a/hw/display/qxl.h
+++ b/hw/display/qxl.h
@@ -39,7 +39,6 @@ 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 3867b94fe236..43482d4364ba 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -30,7 +30,6 @@
#include "qemu/module.h"
#include "hw/qdev-properties.h"
#include "sysemu/runstate.h"
-#include "migration/blocker.h"
#include "migration/vmstate.h"
#include "trace.h"
@@ -666,30 +665,6 @@ 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:
@@ -1283,12 +1258,6 @@ 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();
}
--
2.31.1
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PULL 4/6] hw/display: fail early when multiple virgl devices are requested
2021-07-23 5:54 [PULL 0/6] Vga 20210723 patches Gerd Hoffmann
` (2 preceding siblings ...)
2021-07-23 5:54 ` [PULL 3/6] Revert "qxl: add migration blocker to avoid pre-save assert" Gerd Hoffmann
@ 2021-07-23 5:54 ` Gerd Hoffmann
2021-07-23 5:54 ` [PULL 5/6] vl: add virtio-vga-gl to the default_list Gerd Hoffmann
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Gerd Hoffmann @ 2021-07-23 5:54 UTC (permalink / raw)
To: qemu-devel
Cc: Paolo Bonzini, Mark Cave-Ayland, Gerd Hoffmann,
Marc-André Lureau, Michael S. Tsirkin
From: Marc-André Lureau <marcandre.lureau@redhat.com>
This avoids failing to initialize virgl and crashing later on, and clear
the user expectations.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20210705104218.1161101-1-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
hw/display/virtio-gpu-gl.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c
index 7ab93bf8c829..b1035e119c3b 100644
--- a/hw/display/virtio-gpu-gl.c
+++ b/hw/display/virtio-gpu-gl.c
@@ -113,6 +113,11 @@ static void virtio_gpu_gl_device_realize(DeviceState *qdev, Error **errp)
return;
#endif
+ if (!object_resolve_path_type("", TYPE_VIRTIO_GPU_GL, NULL)) {
+ error_setg(errp, "at most one %s device is permitted", TYPE_VIRTIO_GPU_GL);
+ return;
+ }
+
if (!display_opengl) {
error_setg(errp, "opengl is not available");
return;
--
2.31.1
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PULL 5/6] vl: add virtio-vga-gl to the default_list
2021-07-23 5:54 [PULL 0/6] Vga 20210723 patches Gerd Hoffmann
` (3 preceding siblings ...)
2021-07-23 5:54 ` [PULL 4/6] hw/display: fail early when multiple virgl devices are requested Gerd Hoffmann
@ 2021-07-23 5:54 ` Gerd Hoffmann
2021-07-23 5:54 ` [PULL 6/6] hw/display: fix virgl reset regression Gerd Hoffmann
2021-07-23 14:26 ` [PULL 0/6] Vga 20210723 patches Peter Maydell
6 siblings, 0 replies; 8+ messages in thread
From: Gerd Hoffmann @ 2021-07-23 5:54 UTC (permalink / raw)
To: qemu-devel
Cc: Paolo Bonzini, Gerd Hoffmann, Marc-André Lureau, Michael S. Tsirkin
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Do not instantiate an extra default VGA device if -device virtio-vga-gl
is provided.
Related to commit b36eb8860f8f4a9c6f131c3fd380116a3017e022 ("virtio-gpu:
add virtio-vga-gl")
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210701062421.721414-1-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
softmmu/vl.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/softmmu/vl.c b/softmmu/vl.c
index 4df149610185..a6c17fa39c38 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -202,6 +202,7 @@ static struct {
{ .driver = "virtio-vga", .flag = &default_vga },
{ .driver = "ati-vga", .flag = &default_vga },
{ .driver = "vhost-user-vga", .flag = &default_vga },
+ { .driver = "virtio-vga-gl", .flag = &default_vga },
};
static QemuOptsList qemu_rtc_opts = {
--
2.31.1
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [PULL 6/6] hw/display: fix virgl reset regression
2021-07-23 5:54 [PULL 0/6] Vga 20210723 patches Gerd Hoffmann
` (4 preceding siblings ...)
2021-07-23 5:54 ` [PULL 5/6] vl: add virtio-vga-gl to the default_list Gerd Hoffmann
@ 2021-07-23 5:54 ` Gerd Hoffmann
2021-07-23 14:26 ` [PULL 0/6] Vga 20210723 patches Peter Maydell
6 siblings, 0 replies; 8+ messages in thread
From: Gerd Hoffmann @ 2021-07-23 5:54 UTC (permalink / raw)
To: qemu-devel
Cc: Paolo Bonzini, Gerd Hoffmann, Marc-André Lureau, Michael S. Tsirkin
From: Marc-André Lureau <marcandre.lureau@redhat.com>
Before commit 49afbca3b00e8e517d54964229a794b51768deaf ("virtio-gpu: drop
use_virgl_renderer"), use_virgl_renderer was preventing calling GL
functions from non-GL context threads. The innocuously looking
g->parent_obj.use_virgl_renderer = false;
was set the first time virtio_gpu_gl_reset() was called, during
pc_machine_reset() in the main thread. Further virtio_gpu_gl_reset()
calls in IO threads, without associated GL context, were thus skipping
GL calls and avoided warnings or crashes (see also
https://gitlab.freedesktop.org/virgl/virglrenderer/-/issues/226).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210702123221.942432-1-marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
include/hw/virtio/virtio-gpu.h | 1 +
hw/display/virtio-gpu-gl.c | 22 +++++++++++-----------
hw/display/virtio-gpu-virgl.c | 8 ++++++--
3 files changed, 18 insertions(+), 13 deletions(-)
diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index bcf54d970f24..24c6628944ea 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -279,6 +279,7 @@ int virtio_gpu_update_dmabuf(VirtIOGPU *g,
void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd);
void virtio_gpu_virgl_fence_poll(VirtIOGPU *g);
+void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g);
void virtio_gpu_virgl_reset(VirtIOGPU *g);
int virtio_gpu_virgl_init(VirtIOGPU *g);
int virtio_gpu_virgl_get_num_capsets(VirtIOGPU *g);
diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c
index b1035e119c3b..6cc4313b1af2 100644
--- a/hw/display/virtio-gpu-gl.c
+++ b/hw/display/virtio-gpu-gl.c
@@ -51,12 +51,7 @@ static void virtio_gpu_gl_update_cursor_data(VirtIOGPU *g,
static void virtio_gpu_gl_flushed(VirtIOGPUBase *b)
{
VirtIOGPU *g = VIRTIO_GPU(b);
- VirtIOGPUGL *gl = VIRTIO_GPU_GL(b);
- if (gl->renderer_reset) {
- gl->renderer_reset = false;
- virtio_gpu_virgl_reset(g);
- }
virtio_gpu_process_cmdq(g);
}
@@ -74,6 +69,10 @@ static void virtio_gpu_gl_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
virtio_gpu_virgl_init(g);
gl->renderer_inited = true;
}
+ if (gl->renderer_reset) {
+ gl->renderer_reset = false;
+ virtio_gpu_virgl_reset(g);
+ }
cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
while (cmd) {
@@ -95,12 +94,13 @@ static void virtio_gpu_gl_reset(VirtIODevice *vdev)
virtio_gpu_reset(vdev);
- if (gl->renderer_inited) {
- if (g->parent_obj.renderer_blocked) {
- gl->renderer_reset = true;
- } else {
- virtio_gpu_virgl_reset(g);
- }
+ /*
+ * GL functions must be called with the associated GL context in main
+ * thread, and when the renderer is unblocked.
+ */
+ if (gl->renderer_inited && !gl->renderer_reset) {
+ virtio_gpu_virgl_reset_scanout(g);
+ gl->renderer_reset = true;
}
}
diff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c
index 092c6dc380d9..18d054922fea 100644
--- a/hw/display/virtio-gpu-virgl.c
+++ b/hw/display/virtio-gpu-virgl.c
@@ -588,17 +588,21 @@ void virtio_gpu_virgl_fence_poll(VirtIOGPU *g)
virtio_gpu_fence_poll(g);
}
-void virtio_gpu_virgl_reset(VirtIOGPU *g)
+void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g)
{
int i;
- virgl_renderer_reset();
for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
dpy_gfx_replace_surface(g->parent_obj.scanout[i].con, NULL);
dpy_gl_scanout_disable(g->parent_obj.scanout[i].con);
}
}
+void virtio_gpu_virgl_reset(VirtIOGPU *g)
+{
+ virgl_renderer_reset();
+}
+
int virtio_gpu_virgl_init(VirtIOGPU *g)
{
int ret;
--
2.31.1
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PULL 0/6] Vga 20210723 patches
2021-07-23 5:54 [PULL 0/6] Vga 20210723 patches Gerd Hoffmann
` (5 preceding siblings ...)
2021-07-23 5:54 ` [PULL 6/6] hw/display: fix virgl reset regression Gerd Hoffmann
@ 2021-07-23 14:26 ` Peter Maydell
6 siblings, 0 replies; 8+ messages in thread
From: Peter Maydell @ 2021-07-23 14:26 UTC (permalink / raw)
To: Gerd Hoffmann; +Cc: Paolo Bonzini, QEMU Developers, Michael S. Tsirkin
On Fri, 23 Jul 2021 at 06:57, Gerd Hoffmann <kraxel@redhat.com> wrote:
>
> The following changes since commit e77c8b8b8e933414ef07dbed04e02973fccffeb0:
>
> Update version for v6.1.0-rc0 release (2021-07-21 17:10:15 +0100)
>
> are available in the Git repository at:
>
> git://git.kraxel.org/qemu tags/vga-20210723-pull-request
>
> for you to fetch changes up to 8a13b9bc0f283caff4333c75bc396a963f47ce5c:
>
> hw/display: fix virgl reset regression (2021-07-22 15:46:54 +0200)
>
> ----------------------------------------------------------------
> vga: fixes for qxl and virtio-gpu
>
Applied, thanks.
Please update the changelog at https://wiki.qemu.org/ChangeLog/6.1
for any user-visible changes.
-- PMM
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2021-07-23 14:28 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-23 5:54 [PULL 0/6] Vga 20210723 patches Gerd Hoffmann
2021-07-23 5:54 ` [PULL 1/6] hw/display/virtio-gpu: Fix memory leak (CID 1453811) Gerd Hoffmann
2021-07-23 5:54 ` [PULL 2/6] qxl: remove assert in qxl_pre_save Gerd Hoffmann
2021-07-23 5:54 ` [PULL 3/6] Revert "qxl: add migration blocker to avoid pre-save assert" Gerd Hoffmann
2021-07-23 5:54 ` [PULL 4/6] hw/display: fail early when multiple virgl devices are requested Gerd Hoffmann
2021-07-23 5:54 ` [PULL 5/6] vl: add virtio-vga-gl to the default_list Gerd Hoffmann
2021-07-23 5:54 ` [PULL 6/6] hw/display: fix virgl reset regression Gerd Hoffmann
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