linux-kernel - Re: [PATCH 2/2] Documentation/vmcoreinfo: Add documentation for 'KERNELPACMASK'

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Message-ID: <3d8eb414-c70c-f97b-b2e0-376ebd99403c@arm.com>
Date:   Fri, 20 Mar 2020 15:56:11 +0530
From:   Amit Kachhap <amit.kachhap@....com>
To:     John Donnelly <John.P.Donnelly@...cle.com>,
        linux-arm-kernel@...ts.infradead.org
Cc:     Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Bhupesh Sharma <bhsharma@...hat.com>,
        kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
        James Morse <james.morse@....com>,
        Dave Anderson <anderson@...hat.com>,
        Vincenzo Frascino <Vincenzo.Frascino@....com>,
        Will Deacon <will@...nel.org>
Subject: Re: [PATCH 2/2] Documentation/vmcoreinfo: Add documentation for
 'KERNELPACMASK'

Hi,

On 3/19/20 7:21 PM, John Donnelly wrote:
> On 3/19/20 2:39 AM, Amit Daniel Kachhap wrote:
>> Add documentation for KERNELPACMASK variable being added to vmcoreinfo.
>>
>> It indicates the PAC bits mask information of signed kernel pointers if
>> ARMv8.3-A Pointer Authentication feature is present.
>>
>> Cc: Catalin Marinas <catalin.marinas@....com>
>> Cc: Will Deacon <will@...nel.org>
>> Cc: Mark Rutland <mark.rutland@....com>
>> Cc: James Morse <james.morse@....com>
>> Cc: Dave Anderson <anderson@...hat.com>
>> Signed-off-by: Amit Daniel Kachhap <amit.kachhap@....com>
>> ---
>>   Documentation/admin-guide/kdump/vmcoreinfo.rst | 6 ++++++
>>   1 file changed, 6 insertions(+)
>>
>> diff --git a/Documentation/admin-guide/kdump/vmcoreinfo.rst 
>> b/Documentation/admin-guide/kdump/vmcoreinfo.rst
>> index 007a6b8..5cc3ee6 100644
>> --- a/Documentation/admin-guide/kdump/vmcoreinfo.rst
>> +++ b/Documentation/admin-guide/kdump/vmcoreinfo.rst
>> @@ -393,6 +393,12 @@ KERNELOFFSET
>>   The kernel randomization offset. Used to compute the page offset. If
>>   KASLR is disabled, this value is zero.
>> +KERNELPACMASK
>> +-------------
>> +
>> +Indicates the PAC bits mask information if Pointer Authentication is
>> +enabled and address authentication feature is present.
>> +
>>   arm
>>   ===
>>
>>
> 
> 
> Hi,
> 
> Does this require changes to the  makedumpfile or crash utilities ?

I did the corresponding change in crash tool. The link is mentioned in 
first patch of the series.

Thanks,
Amit Daniel
> 
> 
>