From: afzal mohammed <afzal.mohd.ma@gmail.com>
To: Vladimir Murzin <vladimir.murzin@arm.com>,
Russell King <linux@armlinux.org.uk>
Cc: alexandre.torgue@st.com, linux@armlinux.org.uk,
linux-arm-kernel@lists.infradead.org, sza@esh.hu
Subject: Re: [PATCH] ARM: NOMMU: Fix exc_ret for XIP
Date: Sat, 12 Oct 2019 12:07:25 +0530 [thread overview]
Message-ID: <20191012063725.GA4813@afzalpc> (raw)
In-Reply-To: <1570102888-13426-1-git-send-email-vladimir.murzin@arm.com>
Hi Vladimir,
On Thu, Oct 03, 2019 at 12:41:28PM +0100, Vladimir Murzin wrote:
> It was reported that 72cd4064fcca "NOMMU: Toggle only bits in
> EXC_RETURN we are really care of" breaks NOMMU+XIP combination.
> It happens because saved EXC_RETURN gets overwritten when data
> section is relocated.
>
> The fix is to propagate EXC_RETURN via register and let relocation
> code to commit that value into memory.
>
> Fixes: 72cd4064fcca ("ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of")
>
> Reported-by: afzal mohammed <afzal.mohd.ma@gmail.com>
> Tested-by: afzal mohammed <afzal.mohd.ma@gmail.com>
> Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Can you please put this into rmk's patch system.
STM32 Cortex-M boards are currently not booting in mainline, this
change makes them boot again, verified on stm32f429 discovery board.
Regards
afzal
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next prev parent reply other threads:[~2019-10-12 6:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-03 11:41 [PATCH] ARM: NOMMU: Fix exc_ret for XIP Vladimir Murzin
2019-10-04 0:56 ` afzal mohammed
2019-10-04 10:35 ` Vladimir Murzin
2019-10-12 6:37 ` afzal mohammed [this message]
2019-10-12 7:24 ` Russell King - ARM Linux admin
2019-10-12 9:20 ` afzal mohammed
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