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Tsirkin" , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Laurent Vivier , Gerd Hoffmann , belmouss@redhat.com, Akihiko Odaki , Paolo Bonzini , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Thomas Huth Subject: [PATCH 15/16] virtio-gpu: allocate shareable 2d resources on !win32 Date: Thu, 3 Oct 2024 15:22:42 +0400 Message-ID: <20241003112244.3340697-16-marcandre.lureau@redhat.com> In-Reply-To: <20241003112244.3340697-1-marcandre.lureau@redhat.com> References: <20241003112244.3340697-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 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=170.10.129.124; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.143, 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_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: 1727954737498116600 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 --- include/hw/virtio/virtio-gpu.h | 4 ++- hw/display/virtio-gpu.c | 47 ++++++++++++++++++++++------------ 2 files changed, 34 insertions(+), 17 deletions(-) diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h index 7a59379f5a..a0d715198b 100644 --- a/include/hw/virtio/virtio-gpu.h +++ b/include/hw/virtio/virtio-gpu.h @@ -51,7 +51,9 @@ struct virtio_gpu_simple_resource { unsigned int iov_cnt; uint32_t scanout_bitmask; pixman_image_t *image; -#ifdef WIN32 +#ifndef WIN32 + int shmfd; +#else HANDLE handle; #endif uint64_t hostmem; diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index 77f6e76f23..295d0afca3 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; + } +#ifndef WIN32 + void *data =3D GINT_TO_POINTER(res->shmfd); +#else + void *data =3D res->handle; +#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) { @@ -285,27 +300,23 @@ static void virtio_gpu_resource_create_2d(VirtIOGPU *= g, res->hostmem =3D calc_image_hostmem(pformat, c2d.width, c2d.height); if (res->hostmem + g->hostmem < g->conf_max_hostmem) { void *bits =3D NULL; -#ifdef WIN32 +#ifndef WIN32 + bits =3D qemu_memfd_alloc("virtio-gpu-res", res->hostmem, 0, &res-= >shmfd, &error_warn); +#else bits =3D qemu_win32_map_alloc(res->hostmem, &res->handle, &error_w= arn); +#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", @@ -676,7 +687,9 @@ static bool virtio_gpu_do_set_scanout(VirtIOGPU *g, =20 /* realloc the surface ptr */ scanout->ds =3D qemu_create_displaysurface_pixman(rect); -#ifdef WIN32 +#ifndef WIN32 + qemu_displaysurface_set_shmfd(scanout->ds, res->shmfd, fb->offset); +#else qemu_displaysurface_win32_set_handle(scanout->ds, res->handle, fb-= >offset); #endif =20 @@ -1301,13 +1314,15 @@ static int virtio_gpu_load(QEMUFile *f, void *opaqu= e, size_t size, } =20 res->hostmem =3D calc_image_hostmem(pformat, res->width, res->heig= ht); -#ifdef WIN32 +#ifndef WIN32 + bits =3D qemu_memfd_alloc("virtio-gpu-res", res->hostmem, 0, &res-= >shmfd, &error_warn); +#else bits =3D qemu_win32_map_alloc(res->hostmem, &res->handle, &error_w= arn); +#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); @@ -1451,7 +1464,9 @@ static int virtio_gpu_post_load(void *opaque, int ver= sion_id) return -EINVAL; } scanout->ds =3D qemu_create_displaysurface_pixman(res->image); -#ifdef WIN32 +#ifndef WIN32 + qemu_displaysurface_set_shmfd(scanout->ds, res->shmfd, 0); +#else qemu_displaysurface_win32_set_handle(scanout->ds, res->handle,= 0); #endif dpy_gfx_replace_surface(scanout->con, scanout->ds); --=20 2.45.2.827.g557ae147e6