linux-kernel - Re: [Xen-devel] [PATCH] xen/manage: Fix USB interaction issues when resuming

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Message-ID: <54BD3AC8.1040808@citrix.com>
Date:	Mon, 19 Jan 2015 17:11:36 +0000
From:	David Vrabel <david.vrabel@...rix.com>
To:	Ross Lagerwall <ross.lagerwall@...rix.com>,
	<xen-devel@...ts.xenproject.org>
CC:	<linux-kernel@...r.kernel.org>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	David Vrabel <david.vrabel@...rix.com>
Subject: Re: [Xen-devel] [PATCH] xen/manage: Fix USB interaction issues when
 resuming

On 19/01/15 13:19, Ross Lagerwall wrote:
> Commit 61a734d305e1 ("xen/manage: Always freeze/thaw processes when
> suspend/resuming") ensured that userspace processes were always frozen
> before suspending to reduce interaction issues when resuming devices.
> However, freeze_processes() does not freeze kernel threads.  Freeze
> kernel threads as well to prevent deadlocks with the khubd thread when
> resuming devices.
> 
> This is what native suspend and resume does.

Applied to stable/for-linus-3.19, thanks.

David

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