From patchwork Mon Oct 14 13:39:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= X-Patchwork-Id: 13835047 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 868E9D16265 for ; Mon, 14 Oct 2024 13:42:41 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1t0LKj-0003N8-VU; Mon, 14 Oct 2024 09:42:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t0LJt-0002pc-8a for qemu-devel@nongnu.org; Mon, 14 Oct 2024 09:41:11 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1t0LJr-000442-KG for qemu-devel@nongnu.org; Mon, 14 Oct 2024 09:41:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1728913265; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zbWpuOVJIQm9Y8bC0kcGQOhaiCG1voTob5RmCV0zBno=; b=U0+gE0GYiOyaDCoHsj0+2keCXEG3XEpcBLjX4IvPbtPzNaR9MgMgBo8Nve6dNytngSAX7t BX6hlOZA6vgkDHygQk/ewmmZ2mTGftbQ6iN/h7N5voNP9JWiynukBNCv949x9y++74UNRY Vk5oDWohX+YZxS64e37ftZbonQN4tyU= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-502-iRSZ5c8zMnGwK9dd_n6pTQ-1; Mon, 14 Oct 2024 09:41:04 -0400 X-MC-Unique: iRSZ5c8zMnGwK9dd_n6pTQ-1 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id B3797195421D; Mon, 14 Oct 2024 13:41:03 +0000 (UTC) Received: from localhost (unknown [10.39.208.12]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 18F4F3000198; Mon, 14 Oct 2024 13:41:01 +0000 (UTC) From: marcandre.lureau@redhat.com To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , "Michael S. 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 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Marc-André 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-André 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; 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; } +static void +resource_set_image_destroy(struct virtio_gpu_simple_resource *res) +{ + if (!res) { + return; + } +#ifdef WIN32 + void *data = res->handle; +#else + void *data = 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 = NULL; #ifdef WIN32 bits = qemu_win32_map_alloc(res->hostmem, &res->handle, &error_warn); +#else + bits = qemu_memfd_alloc("virtio-gpu-res", res->hostmem, 0, &res->shmfd, &error_warn); +#endif if (!bits) { goto end; } -#endif res->image = 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_shared_image_destroy, res->handle); - } -#endif + resource_set_image_destroy(res); } -#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 = 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 pixman_image_unref(rect); @@ -1303,11 +1316,13 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size, res->hostmem = calc_image_hostmem(pformat, res->width, res->height); #ifdef WIN32 bits = qemu_win32_map_alloc(res->hostmem, &res->handle, &error_warn); +#else + bits = qemu_memfd_alloc("virtio-gpu-res", res->hostmem, 0, &res->shmfd, &error_warn); +#endif if (!bits) { g_free(res); return -EINVAL; } -#endif res->image = 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_image_destroy, res->handle); -#endif + resource_set_image_destroy(res); res->addrs = g_new(uint64_t, res->iov_cnt); res->iov = g_new(struct iovec, res->iov_cnt); @@ -1453,6 +1466,8 @@ static int virtio_gpu_post_load(void *opaque, int version_id) scanout->ds = 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); }