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

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Date:   Thu, 23 Feb 2017 15:05:42 -0600
From:   Shanker Donthineni <shankerd@...eaurora.org>
To:     Timur Tabi <timur@...eaurora.org>,
        Catalin Marinas <catalin.marinas@....com>
Cc:     Mark Rutland <mark.rutland@....com>,
        Vikram Sethi <vikrams@...eaurora.org>,
        Will Deacon <will.deacon@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        James Morse <james.morse@....com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2] arm64: Fix the kernel panic() on QDF2400 platform



On 02/23/2017 02:46 PM, Timur Tabi wrote:
> 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
>
>
Why do you want keep 'pre_ttbr0_update_workaround' in subject, nothing 
wrong with macro definition itself. Problem with the caller, not passing 
the right arguments.

-- 
Shanker Donthineni
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.