From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Borislav Petkov <bp@alien8.de>, X86 ML <x86@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Andy Lutomirski <luto@amacapital.net>,
"Luis R. Rodriguez" <mcgrof@kernel.org>
Subject: Re: [PATCH] x86/ptdump: Remove paravirt_enabled()
Date: Thu, 18 Feb 2016 16:31:43 -0500 [thread overview]
Message-ID: <56C6383F.9010405@oracle.com> (raw)
In-Reply-To: <1455825641-19585-1-git-send-email-bp@alien8.de>
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>
next prev parent reply other threads:[~2016-02-18 21:32 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-18 20:00 [PATCH] x86/ptdump: Remove paravirt_enabled() Borislav Petkov
2016-02-18 21:31 ` Boris Ostrovsky [this message]
2016-02-20 11:42 ` [tip:x86/mm] x86/mm/ptdump: " tip-bot for Borislav Petkov
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