linux-kernel - Re: Fwd: [PATCH] x86: Use larger chunks in mtrr

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Date:	Fri, 04 Sep 2015 00:51:11 -0600
From:	"Jan Beulich" <JBeulich@...e.com>
To:	"Luis R. Rodriguez" <mcgrof@...e.com>
Cc:	<mcgrof@...not-panic.com>,
	"Stuart Hayes" <stuart.w.hayes@...il.com>,
	"Toshi Kani" <toshi.kani@...com>,
	"Toshi Kani" <toshi.kani@....com>, <x86@...nel.org>,
	<tglx@...utronix.de>, <mingo@...hat.com>,
	"Prarit Bhargava" <prarit@...hat.com>,
	"Juergen Gross" <JGross@...e.com>, <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: Fwd: [PATCH] x86: Use larger chunks in mtrr_cleanup

>>> On 04.09.15 at 01:54, <mcgrof@...e.com> wrote:
> If I undestand this correctly then I think we're in a pickle with Xen unless
> we add hypervisor support and hypercall support for mtrr_type_lookup().

Are you perhaps unaware of XENPF_read_memtype (which our kernel
uses)?

Jan

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