linux-kernel - Re: [PATCH v2] arm64: Fix the kernel panic() on QDF2400 platform

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Message-ID: <4d97310a-4b91-07ac-1ce0-faacb8da03b0@codeaurora.org>
Date:   Thu, 23 Feb 2017 14:46:49 -0600
From:   Timur Tabi <timur@...eaurora.org>
To:     Shanker Donthineni <shankerd@...eaurora.org>,
        Catalin Marinas <catalin.marinas@....com>
Cc:     Will Deacon <will.deacon@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Mark Rutland <mark.rutland@....com>,
        James Morse <james.morse@....com>,
        Vikram Sethi <vikrams@...eaurora.org>
Subject: Re: [PATCH v2] arm64: Fix the kernel panic() on QDF2400 platform

On 02/23/2017 02:02 PM, Shanker Donthineni wrote:
> The commit 38fd94b0275c 'arm64: Work around Falkor erratum 1003' has
> been added to fix the hardware bug but causing a system crash. The

"causes"

> value of the register x1 which contains 'struct mm_struct *' should
> be preserved inside macro pre_ttbr0_update_workaround.

The subject line seems a bit vague and alarmist to me.  In my opinion, this 
is more descriptive:

arm64: qcom: pre_ttbr0_update_workaround should not clobber register x1



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