linux-kernel - Re: [PATCH 7/7] kvm x86: report 1GB page support to userspace

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Message-ID: <49F6D5FC.90106@redhat.com>
Date:	Tue, 28 Apr 2009 13:10:04 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Joerg Roedel <joerg.roedel@....com>
CC:	Marcelo Tosatti <marcelo@...ck.or>, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org
Subject: Re: [PATCH 7/7] kvm x86: report 1GB page support to userspace

Joerg Roedel wrote:
> If userspace knows that the kernel part supports 1GB pages it can enable
> the corresponding cpuid bit so that guests actually use GB pages.
>   

Why not do everything via KVM_GET_SUPPORTED_CPUID2 and virtualized 
cpuid?  We can enable it in the kernel unconditionally.


-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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