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From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: afzal mohammed <afzal.mohd.ma@gmail.com>
Cc: Vladimir Murzin <vladimir.murzin@arm.com>,
	alexandre.torgue@st.com, linux-arm-kernel@lists.infradead.org,
	sza@esh.hu
Subject: Re: [PATCH] ARM: NOMMU: Fix exc_ret for XIP
Date: Sat, 12 Oct 2019 08:24:50 +0100	[thread overview]
Message-ID: <20191012072450.GM25745@shell.armlinux.org.uk> (raw)
In-Reply-To: <20191012063725.GA4813@afzalpc>

On Sat, Oct 12, 2019 at 12:07:25PM +0530, afzal mohammed wrote:
> 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.

Please check linux-next - or see 8914/1.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
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  reply	other threads:[~2019-10-12  7:25 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
2019-10-12  7:24   ` Russell King - ARM Linux admin [this message]
2019-10-12  9:20     ` afzal mohammed

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