From: Will Deacon <will@kernel.org>
To: Amit Daniel Kachhap <amit.kachhap@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>, Baoquan He <bhe@redhat.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>,
Vincenzo Frascino <Vincenzo.Frascino@arm.com>,
Dave Young <dyoung@redhat.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 2/2] Documentation/vmcoreinfo: Add documentation for 'KERNELPACMASK'
Date: Mon, 4 May 2020 18:34:41 +0100 [thread overview]
Message-ID: <20200504173440.GE1833@willie-the-truck> (raw)
In-Reply-To: <1587968702-19996-2-git-send-email-amit.kachhap@arm.com>
On Mon, Apr 27, 2020 at 11:55:02AM +0530, Amit Daniel Kachhap wrote:
> Add documentation for KERNELPACMASK variable being added to the 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: Dave Young <dyoung@redhat.com>
> Cc: Baoquan He <bhe@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.
This is a bit cryptic. How about:
The mask to extract the Pointer Authentication Code from a kernel virtual
address.
Will
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next prev parent reply other threads:[~2020-05-04 17:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-27 6:25 [PATCH v2 1/2] arm64/crash_core: Export KERNELPACMASK in vmcoreinfo Amit Daniel Kachhap
2020-04-27 6:25 ` [PATCH v2 2/2] Documentation/vmcoreinfo: Add documentation for 'KERNELPACMASK' Amit Daniel Kachhap
2020-05-04 17:34 ` Will Deacon [this message]
2020-05-06 12:07 ` Amit Kachhap
2020-04-30 11:35 ` [PATCH v2 1/2] arm64/crash_core: Export KERNELPACMASK in vmcoreinfo Amit Kachhap
2020-04-30 11:44 ` Amit Kachhap
2020-05-04 17:17 ` Will Deacon
2020-05-06 12:02 ` Amit Kachhap
2020-05-06 12:31 ` Will Deacon
2020-05-06 13:04 ` Amit Kachhap
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