linux-kernel - Re: [PATCH] Revert "misc: fastrpc: Restrict untrusted app to attach to privileged PD"

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Message-ID: <jof6sunnfydjp34o543jnhwz3zmjn32f6cwre3etbn27ov2mxl@mdzkojaqeteq>
Date: Fri, 30 Aug 2024 10:51:17 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc: Griffin Kroah-Hartman <griffin@...ah.com>, amahesh@....qualcomm.com, 
	linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
	stable <stable@...nel.org>, Ekansh Gupta <quic_ekangupt@...cinc.com>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Joel Selvaraj <joelselvaraj.oss@...il.com>
Subject: Re: [PATCH] Revert "misc: fastrpc: Restrict untrusted app to attach
 to privileged PD"

On Thu, Aug 15, 2024 at 03:55:01PM GMT, Srinivas Kandagatla wrote:
> 
> 
> On 15/08/2024 10:49, Griffin Kroah-Hartman wrote:
> > This reverts commit bab2f5e8fd5d2f759db26b78d9db57412888f187.
> > 
> > Joel reported that this commit breaks userspace and stops sensors in
> > SDM845 from working. Also breaks other qcom SoC devices running postmarketOS.
> > 
> > Cc: stable <stable@...nel.org>
> > Cc: Ekansh Gupta <quic_ekangupt@...cinc.com>
> > Cc: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> > Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> > Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > Reported-by: Joel Selvaraj <joelselvaraj.oss@...il.com>
> > Link: https://lore.kernel.org/r/9a9f5646-a554-4b65-8122-d212bb665c81@umsystem.edu
> > Signed-off-by: Griffin Kroah-Hartman <griffin@...ah.com>
> > ---
> 
> 
> Lets fix this properly by updating existing device tree entries and bindings
> to enforce misuse of "qcom,non-secure-domain" on all Qcom SoC's.

It is not possible. We must remain compatible with existing DTs.

> 
> As this patch is only doing part of the job and breaking existing platforms,
> 
> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> 
> --srini
> 
> 
> 

-- 
With best wishes
Dmitry