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t=1709033942; 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=+me0BDLw67ndsbsjeM1XkKYm0ToICqKPaX9sSOSx+bE=; b=tBwVcm6EFquLqtUbc9X5EZZjk7oPTfe5B0PGee5ukqEUAoxfz/qMwisrz2Ho4xe7Honu8m oLbhP1lqUGvKFdCw== Received: from imap2.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap2.dmz-prg2.suse.org (Postfix) with ESMTPS id DCFF113ABC; Tue, 27 Feb 2024 11:39:01 +0000 (UTC) Received: from dovecot-director2.suse.de ([10.150.64.162]) by imap2.dmz-prg2.suse.org with ESMTPSA id 8OCQNNXJ3WVMUQAAn2gu4w (envelope-from ); Tue, 27 Feb 2024 11:39:01 +0000 From: Thomas Zimmermann To: daniel@ffwll.ch, airlied@gmail.com, mripard@kernel.org, maarten.lankhorst@linux.intel.com, christian.koenig@amd.com, sumit.semwal@linaro.org, dmitry.osipenko@collabora.com, robdclark@gmail.com, quic_abhinavk@quicinc.com, dmitry.baryshkov@linaro.org, sean@poorly.run, marijn.suijten@somainline.org, suijingfeng@loongson.cn, kherbst@redhat.com, lyude@redhat.com, dakr@redhat.com, airlied@redhat.com, kraxel@redhat.com, alexander.deucher@amd.com, Xinhui.Pan@amd.com, zack.rusin@broadcom.com, bcm-kernel-feedback-list@broadcom.com Cc: dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, nouveau@lists.freedesktop.org, virtualization@lists.linux.dev, spice-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, Thomas Zimmermann Subject: [PATCH 08/13] drm/qxl: Acquire reservation lock in GEM pin/unpin callbacks Date: Tue, 27 Feb 2024 11:14:55 +0100 Message-ID: <20240227113853.8464-9-tzimmermann@suse.de> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240227113853.8464-1-tzimmermann@suse.de> References: <20240227113853.8464-1-tzimmermann@suse.de> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Authentication-Results: smtp-out1.suse.de; 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Same for unpin. Prepares for further changes. Dma-buf locking semantics require callers to hold the buffer's reservation lock when invoking the pin and unpin callbacks. Prepare qxl accordingly by pushing locking out of the implementation. A follow-up patch will fix locking for all GEM code at once. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/qxl/qxl_prime.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/qxl/qxl_prime.c b/drivers/gpu/drm/qxl/qxl_prime.c index 9169c26357d36..f2646603e12eb 100644 --- a/drivers/gpu/drm/qxl/qxl_prime.c +++ b/drivers/gpu/drm/qxl/qxl_prime.c @@ -31,15 +31,27 @@ int qxl_gem_prime_pin(struct drm_gem_object *obj) { struct qxl_bo *bo = gem_to_qxl_bo(obj); + int r; - return qxl_bo_pin(bo); + r = qxl_bo_reserve(bo); + if (r) + return r; + r = qxl_bo_pin_locked(bo); + qxl_bo_unreserve(bo); + + return r; } void qxl_gem_prime_unpin(struct drm_gem_object *obj) { struct qxl_bo *bo = gem_to_qxl_bo(obj); + int r; - qxl_bo_unpin(bo); + r = qxl_bo_reserve(bo); + if (r) + return; + qxl_bo_unpin_locked(bo); + qxl_bo_unreserve(bo); } struct sg_table *qxl_gem_prime_get_sg_table(struct drm_gem_object *obj)