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Documentation/vmcoreinfo: Add documentation for 'KERNELPACMASK'

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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.

Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
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>
Link: https://lore.kernel.org/r/1589202116-18265-2-git-send-email-amit.kachhap@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Amit Daniel Kachhap 2020-05-11 18:31:56 +05:30 committed by Will Deacon
parent 203b1152d1
commit c0fc00ec63
1 changed files with 6 additions and 0 deletions
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6
Documentation/admin-guide/kdump/vmcoreinfo.rst
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@ -393,6 +393,12 @@ KERNELOFFSET
The kernel randomization offset. Used to compute the page offset. If
KASLR is disabled, this value is zero.
KERNELPACMASK
-------------
The mask to extract the Pointer Authentication Code from a kernel virtual
address.
arm
===