From: Johan Hovold <johan@kernel.org>
To: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Subject: Re: [PATCH 3/4] firmware: qcom: scm: initialize tzmem before marking SCM as available
Date: Wed, 25 Jun 2025 16:39:00 +0200 [thread overview]
Message-ID: <aFwKBGuvcvUza0Xi@hovoldconsulting.com> (raw)
In-Reply-To: <20250625-qcom-scm-race-v1-3-45601e1f248b@linaro.org>
On Wed, Jun 25, 2025 at 10:14:50AM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
>
> Now that qcom_scm_shm_bridge_enable() uses the struct device passed to
> it as argument to make the QCOM_SCM_MP_SHM_BRIDGE_ENABLE SCM call, we
> can move the TZMem initialization before the assignment of the __scm
> pointer in the SCM driver (which marks SCM as ready to users) thus
> fixing the potential race between consumer calls and the memory pool
> initialization.
>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Good to see this being worked on.
Perhaps you can add:
Reported-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/all/20250120151000.13870-1-johan+linaro@kernel.org/
Johan
next prev parent reply other threads:[~2025-06-25 14:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-25 8:14 [PATCH 0/4] firmware: qcom: scm: fix potential race condition with tzmem Bartosz Golaszewski
2025-06-25 8:14 ` [PATCH 1/4] firmware: qcom: scm: remove unused arguments from SHM bridge routines Bartosz Golaszewski
2025-06-25 12:01 ` Konrad Dybcio
2025-06-25 8:14 ` [PATCH 2/4] firmware: qcom: scm: take struct device as argument in SHM bridge enable Bartosz Golaszewski
2025-06-25 12:08 ` Konrad Dybcio
2025-06-25 8:14 ` [PATCH 3/4] firmware: qcom: scm: initialize tzmem before marking SCM as available Bartosz Golaszewski
2025-06-25 14:39 ` Johan Hovold [this message]
2025-06-25 14:47 ` Konrad Dybcio
2025-06-25 14:55 ` Bartosz Golaszewski
2025-06-25 8:14 ` [PATCH 4/4] firmware: qcom: scm: request the waitqueue irq *after* initializing SCM Bartosz Golaszewski
2025-06-25 14:49 ` Konrad Dybcio
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