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a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1755764534; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=F9N1Ea55spH8hFBExE5Mypm1vzz8jL25yLmd30aIPLE=; b=YhTtrEEWTDNjoocO6Yj5lPXmM6STfG/qO88dBj8YRnMUQAa0NEH6U90wte7wQn7ADnYgEp amJQqkzCv4BhmfBw== From: Thomas Zimmermann To: simona@ffwll.ch, airlied@gmail.com, mripard@kernel.org, maarten.lankhorst@linux.intel.com, geert@linux-m68k.org, tomi.valkeinen@ideasonboard.com Cc: dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, imx@lists.linux.dev, linux-samsung-soc@vger.kernel.org, nouveau@lists.freedesktop.org, virtualization@lists.linux.dev, spice-devel@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-tegra@vger.kernel.org, intel-xe@lists.freedesktop.org, xen-devel@lists.xenproject.org, Thomas Zimmermann Subject: [PATCH v6 05/25] drm/gem-vram: Compute dumb-buffer sizes with drm_mode_size_dumb() Date: Thu, 21 Aug 2025 10:17:12 +0200 Message-ID: <20250821081918.79786-6-tzimmermann@suse.de> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250821081918.79786-1-tzimmermann@suse.de> References: <20250821081918.79786-1-tzimmermann@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spamd-Result: default: False [-1.51 / 50.00]; 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charset="utf-8" Call drm_mode_size_dumb() to compute dumb-buffer scanline pitch and buffer size. Inline code from drm_gem_vram_fill_create_dumb() without the existing size computation. Align the pitch to a multiple of 8. Only hibmc and vboxvideo use gem-vram. Hibmc invokes the call to drm_gem_vram_fill_create_dumb() directly and is therefore not affected. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/drm_gem_vram_helper.c | 24 +++++++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_ge= m_vram_helper.c index b04cde4a60e7..dd4537bf63dc 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include #include @@ -545,10 +546,31 @@ int drm_gem_vram_driver_dumb_create(struct drm_file *= file, struct drm_device *dev, struct drm_mode_create_dumb *args) { + struct drm_gem_vram_object *gbo; + int ret; + if (WARN_ONCE(!dev->vram_mm, "VRAM MM not initialized")) return -EINVAL; =20 - return drm_gem_vram_fill_create_dumb(file, dev, 0, 0, args); + ret =3D drm_mode_size_dumb(dev, args, SZ_8, 0); + if (ret) + return ret; + + gbo =3D drm_gem_vram_create(dev, args->size, 0); + if (IS_ERR(gbo)) + return PTR_ERR(gbo); + + ret =3D drm_gem_handle_create(file, &gbo->bo.base, &args->handle); + if (ret) + goto err_drm_gem_object_put; + + drm_gem_object_put(&gbo->bo.base); + + return 0; + +err_drm_gem_object_put: + drm_gem_object_put(&gbo->bo.base); + return ret; } EXPORT_SYMBOL(drm_gem_vram_driver_dumb_create); =20 --=20 2.50.1