linux-kernel - Re: [PATCH v9 1/5] soc: qcom: pdr: protect locator

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Date: Mon, 24 Jun 2024 17:52:34 -0700
From: Chris Lew <quic_clew@...cinc.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Sibi Sankar
	<quic_sibis@...cinc.com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>
CC: <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-remoteproc@...r.kernel.org>,
        Johan Hovold <johan+linaro@...nel.org>,
        Xilin Wu <wuxilin123@...il.com>,
        Bryan O'Donoghue
	<bryan.odonoghue@...aro.org>,
        Steev Klimaszewski <steev@...i.org>,
        "Alexey
 Minnekhanov" <alexeymin@...tmarketos.org>,
        Neil Armstrong
	<neil.armstrong@...aro.org>
Subject: Re: [PATCH v9 1/5] soc: qcom: pdr: protect locator_addr with the main
 mutex



On 6/21/2024 3:03 PM, Dmitry Baryshkov wrote:
> If the service locator server is restarted fast enough, the PDR can
> rewrite locator_addr fields concurrently. Protect them by placing
> modification of those fields under the main pdr->lock.
> 
> Fixes: fbe639b44a82 ("soc: qcom: Introduce Protection Domain Restart helpers")
> Tested-by: Neil Armstrong <neil.armstrong@...aro.org> # on SM8550-QRD
> Tested-by: Steev Klimaszewski <steev@...i.org>
> Tested-by: Alexey Minnekhanov <alexeymin@...tmarketos.org>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

Reviewed-by: Chris Lew <quic_clew@...cinc.com>