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Tsirkin" Subject: [PULL 17/20] virtio-gpu: allocate shareable 2d resources on !win32 Date: Mon, 14 Oct 2024 17:39:32 +0400 Message-ID: <20241014133935.470709-18-marcandre.lureau@redhat.com> In-Reply-To: <20241014133935.470709-1-marcandre.lureau@redhat.com> References: <20241014133935.470709-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 12 X-Spam_score: 1.2 X-Spam_bar: + X-Spam_report: (1.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.076, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SBL_CSS=3.335, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1728913363120116600 From: Marc-Andr=C3=A9 Lureau Similar to what was done in commit 9462ff46 ("virtio-gpu/win32: allocate shareable 2d resources/images") for win32, allocate resource memory with memfd, so the associated display surface memory can be shared with a different process. Signed-off-by: Marc-Andr=C3=A9 Lureau Reviewed-by: Akihiko Odaki Message-ID: <20241008125028.1177932-18-marcandre.lureau@redhat.com> --- include/hw/virtio/virtio-gpu.h | 2 ++ hw/display/virtio-gpu.c | 39 +++++++++++++++++++++++----------- 2 files changed, 29 insertions(+), 12 deletions(-) diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 7a59379f5a..7509d13265 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -53,6 +53,8 @@ struct virtio_gpu_simple_resource { pixman_image_t *image; #ifdef WIN32 HANDLE handle; +#else + int shmfd; #endif uint64_t hostmem; =20 diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index 77f6e76f23..23ebefa59c 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -28,6 +28,7 @@ #include "hw/virtio/virtio-bus.h" #include "hw/qdev-properties.h" #include "qemu/log.h" +#include "qemu/memfd.h" #include "qemu/module.h" #include "qapi/error.h" #include "qemu/error-report.h" @@ -238,6 +239,20 @@ static uint32_t calc_image_hostmem(pixman_format_code_= t pformat, return height * stride; } =20 +static void +resource_set_image_destroy(struct virtio_gpu_simple_resource *res) +{ + if (!res) { + return; + } +#ifdef WIN32 + void *data =3D res->handle; +#else + void *data =3D GINT_TO_POINTER(res->shmfd); +#endif + pixman_image_set_destroy_function(res->image, qemu_pixman_shared_image= _destroy, data); +} + static void virtio_gpu_resource_create_2d(VirtIOGPU *g, struct virtio_gpu_ctrl_command *= cmd) { @@ -287,25 +302,21 @@ static void virtio_gpu_resource_create_2d(VirtIOGPU *= g, void *bits =3D NULL; #ifdef WIN32 bits =3D qemu_win32_map_alloc(res->hostmem, &res->handle, &error_w= arn); +#else + bits =3D qemu_memfd_alloc("virtio-gpu-res", res->hostmem, 0, &res-= >shmfd, &error_warn); +#endif if (!bits) { goto end; } -#endif res->image =3D pixman_image_create_bits( pformat, c2d.width, c2d.height, bits, c2d.height ? res->hostmem / c2d.height : 0); -#ifdef WIN32 - if (res->image) { - pixman_image_set_destroy_function(res->image, qemu_pixman_shar= ed_image_destroy, res->handle); - } -#endif + resource_set_image_destroy(res); } =20 -#ifdef WIN32 end: -#endif if (!res->image) { qemu_log_mask(LOG_GUEST_ERROR, "%s: resource creation failed %d %d %d\n", @@ -678,6 +689,8 @@ static bool virtio_gpu_do_set_scanout(VirtIOGPU *g, scanout->ds =3D qemu_create_displaysurface_pixman(rect); #ifdef WIN32 qemu_displaysurface_win32_set_handle(scanout->ds, res->handle, fb-= >offset); +#else + qemu_displaysurface_set_shmfd(scanout->ds, res->shmfd, fb->offset); #endif =20 pixman_image_unref(rect); @@ -1303,11 +1316,13 @@ static int virtio_gpu_load(QEMUFile *f, void *opaqu= e, size_t size, res->hostmem =3D calc_image_hostmem(pformat, res->width, res->heig= ht); #ifdef WIN32 bits =3D qemu_win32_map_alloc(res->hostmem, &res->handle, &error_w= arn); +#else + bits =3D qemu_memfd_alloc("virtio-gpu-res", res->hostmem, 0, &res-= >shmfd, &error_warn); +#endif if (!bits) { g_free(res); return -EINVAL; } -#endif res->image =3D pixman_image_create_bits( pformat, res->width, res->height, @@ -1316,9 +1331,7 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque,= size_t size, g_free(res); return -EINVAL; } -#ifdef WIN32 - pixman_image_set_destroy_function(res->image, qemu_pixman_shared_i= mage_destroy, res->handle); -#endif + resource_set_image_destroy(res); =20 res->addrs =3D g_new(uint64_t, res->iov_cnt); res->iov =3D g_new(struct iovec, res->iov_cnt); @@ -1453,6 +1466,8 @@ static int virtio_gpu_post_load(void *opaque, int ver= sion_id) scanout->ds =3D qemu_create_displaysurface_pixman(res->image); #ifdef WIN32 qemu_displaysurface_win32_set_handle(scanout->ds, res->handle,= 0); +#else + qemu_displaysurface_set_shmfd(scanout->ds, res->shmfd, 0); #endif dpy_gfx_replace_surface(scanout->con, scanout->ds); } --=20 2.47.0