linux-kernel - Re: [PATCH urgent] x86: Save cr4 to mmu_cr4

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Message-ID: <20110401062338.GA6434@elte.hu>
Date:	Fri, 1 Apr 2011 08:23:38 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	yinghai@...nel.org, linux-kernel@...r.kernel.org,
	Greg KH <gregkh@...e.de>, lkml20101129@...ton.leun.net
Subject: Re: [PATCH urgent] x86: Save cr4 to mmu_cr4_features at boot time


* Stefano Stabellini <stefano.stabellini@...citrix.com> wrote:

> Save cr4 to mmu_cr4_features at boot time
> 
> This patch fixes a freeze when resuming from hibernation, introduced by
> "x86: Cleanup highmap after brk is concluded", commit id
> e5f15b45ddf3afa2bbbb10c7ea34fb32b6de0a0e.
> This patch should be backported to all the stable tree where the
> offending commit is present.

No, the offending commit should be reverted from -stable. It's not at all clear 
yet why this fix patch helps.

Thanks,

	Ingo
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