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Groups > linux.kernel > #1337746

Re: [PATCH] x86/ptdump: Remove paravirt_enabled()

From Boris Ostrovsky <boris.ostrovsky@oracle.com>
Newsgroups linux.kernel
Subject Re: [PATCH] x86/ptdump: Remove paravirt_enabled()
Date 2016-02-18 22:40 +0100
Message-ID <r3EsO-3h6-13@gated-at.bofh.it> (permalink)
References <r3D3J-2sr-29@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 02/18/2016 03:00 PM, Borislav Petkov wrote:
> From: Borislav Petkov <bp@suse.de>
>
> is_hypervisor_range() can simply check if the PGD index is
> within ffff800000000000 - ffff87ffffffffff which is the range
> reserved for a hypervisor. That range is practically an ABI, see
> Documentation/x86/x86_64/mm.txt.
>
> Signed-off-by: Borislav Petkov <bp@suse.de>
> Cc: Andy Lutomirski <luto@amacapital.net>
> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
> Cc: "Luis R. Rodriguez" <mcgrof@kernel.org>

Under Xen, as PV guest:

Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

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Thread

[PATCH] x86/ptdump: Remove paravirt_enabled() Borislav Petkov <bp@alien8.de> - 2016-02-18 21:10 +0100
  Re: [PATCH] x86/ptdump: Remove paravirt_enabled() Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-18 22:40 +0100
  [tip:x86/mm] x86/mm/ptdump: Remove paravirt_enabled() tip-bot for Borislav Petkov <tipbot@zytor.com> - 2016-02-20 12:50 +0100

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