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Subject: Re: [PATCH 2/2] Documentation/vmcoreinfo: Add documentation for
 'KERNELPACMASK'
To:     Amit Daniel Kachhap <amit.kachhap@arm.com>,
        linux-arm-kernel@lists.infradead.org
Cc:     Mark Rutland <mark.rutland@arm.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Bhupesh Sharma <bhsharma@redhat.com>,
        kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
        James Morse <james.morse@arm.com>,
        Dave Anderson <anderson@redhat.com>,
        Vincenzo Frascino <Vincenzo.Frascino@arm.com>,
        Will Deacon <will@kernel.org>
References: <1584603551-23845-1-git-send-email-amit.kachhap@arm.com>
 <1584603551-23845-2-git-send-email-amit.kachhap@arm.com>
From:   John Donnelly <John.P.Donnelly@Oracle.com>
Message-ID: <5235269c-e3c7-efff-6083-a05a39699735@Oracle.com>
Date:   Thu, 19 Mar 2020 08:51:16 -0500
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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@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: James Morse <james.morse@arm.com>
> Cc: Dave Anderson <anderson@redhat.com>
> Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.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 ?


-- 
Thank You,
John