linux-kernel - Re: [PATCH] x86: use pgd accessors when cloning a pgd range.

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Message-ID: <4CC861F9.8080200@goop.org>
Date:	Wed, 27 Oct 2010 10:31:37 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	"H. Peter Anvin" <hpa@...ux.intel.com>
CC:	Borislav Petkov <bp@...en8.de>,
	Ian Campbell <ian.campbell@...rix.com>,
	linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH] x86: use pgd accessors when cloning a pgd range.

 On 10/27/2010 10:18 AM, H. Peter Anvin wrote:
> On 10/27/2010 9:50 AM, Jeremy Fitzhardinge wrote:
>>
>> This never used to be a problem.  Perhaps we can change how
>> clone_pgd_range is used at boot time to avoid it in the Xen case (since
>> we don't care about the secondary pagetable)?
>>
>
> Xen shouldn't have any users of this, since it's used for low-level
> operations like SMP bootstrap, suspend to RAM, reboot and low-level
> BIOS functionality.
>

Right, but it is being called smack in the middle of setup_arch().  It
looks like they could be hidden away in
native_pagetable_setup_start/done though.

    J
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