Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To:     Sumit Semwal <sumit.semwal@linaro.org>,
        =?utf-8?q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>,
        Benjamin Gaignard <benjamin.gaignard@collabora.com>,
        Liam Mark <lmark@codeaurora.org>,
        Brian Starkey <Brian.Starkey@arm.com>,
        John Stultz <jstultz@google.com>,
        Gerd Hoffmann <kraxel@redhat.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Jani Nikula <jani.nikula@linux.intel.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        Tomi Valkeinen <tomba@kernel.org>,
        Thierry Reding <thierry.reding@gmail.com>,
        Tomasz Figa <tfiga@chromium.org>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Amol Maheshwari <amahesh@qti.qualcomm.com>,
        Emil Velikov <emil.l.velikov@gmail.com>,
        Dmitry Osipenko <dmitry.osipenko@collabora.com>
Cc:     linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org,
        linux-tegra@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        kernel@collabora.com
In-Reply-To: <20230406160637.541702-1-dmitry.osipenko@collabora.com>
References: <20230406160637.541702-1-dmitry.osipenko@collabora.com>
Subject: Re: (subset) [PATCH v2 0/7] Move dma-buf mmap() reservation
 locking down to exporters
Message-Id: <168390328031.185210.8399521458221830929.b4-ty@linaro.org>
Date:   Fri, 12 May 2023 15:54:40 +0100
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Precedence: bulk


On Thu, 06 Apr 2023 19:06:30 +0300, Dmitry Osipenko wrote:
> This patchset makes dma-buf exporters responisble for taking care of
> the reservation lock. I also included patch that moves drm-shmem to use
> reservation lock, to let CI test the whole set. I'm going to take all
> the patches via the drm-misc tree, please give an ack.
> 
> Previous policy stated that dma-buf core takes the lock around mmap()
> callback. Which meant that both importers and exporters shouldn't touch
> the reservation lock in the mmap() code path. This worked well until
> Intel-CI found a deadlock problem in a case of self-imported dma-buf [1].
> 
> [...]

Applied, thanks!

[4/7] fastrpc: Don't assert held reservation lock for dma-buf mmapping
      commit: 3f6b4c6f0bd0126f673f3578429239ae3860718b

Best regards,
-- 
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>