linux-kernel - Re: [Xen-devel] [PATCH] x86/xen: Initialize cr4 shadow for 64-bit PV(H) guests

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Date:	Mon, 2 Mar 2015 21:35:00 -0800
From:	"Luis R. Rodriguez" <mcgrof@...e.com>
To:	David Vrabel <david.vrabel@...rix.com>
Cc:	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	xen-devel@...ts.xenproject.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andy Lutomirski <luto@...capital.net>
Subject: Re: [Xen-devel] [PATCH] x86/xen: Initialize cr4 shadow for 64-bit
 PV(H) guests

On Mon, Feb 23, 2015 at 9:09 AM, David Vrabel <david.vrabel@...rix.com> wrote:
> On 23/02/15 16:01, Boris Ostrovsky wrote:
>> Commit 1e02ce4cccdc ("x86: Store a per-cpu shadow copy of CR4")
>> introduced CR4 shadows.
>>
>> These shadows are initialized in early boot code. The commit missed
>> initialization for 64-bit PV(H) guests that this patch adds.
>
> Applied to stable/for-linus-4.0, thanks.
>
> Boris, can you kick of a set of tests on this branch, please?

Do we know worst case what should blow up without this commit ?

 Luis
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