From: John Levon <levon@movementarian.org>
To: Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk>
Cc: xen-devel@lists.xensource.com
Subject: Re: save/restore race
Date: Tue, 23 Jan 2007 22:48:56 +0000 [thread overview]
Message-ID: <20070123224856.GA25347@totally.trollied.org.uk> (raw)
In-Reply-To: <8A87A9A84C201449A0C56B728ACF491E04F284@liverpoolst.ad.cl.cam.ac.uk>
On Tue, Jan 23, 2007 at 10:15:29PM -0000, Ian Pratt wrote:
> Just ignore any new suspend request until you've got the frame list list
> rebuilt.
see xc_linux_save.c:
667 live_p2m_frame_list_list =
668 xc_map_foreign_range(xc_handle, dom, PAGE_SIZE, PROT_READ,
669 live_shinfo->arch.pfn_to_mfn_frame_list_list);
...
1087 if (suspend_and_state(suspend, xc_handle, io_fd, dom, &info,
1088 &ctxt)) {
1089 ERROR("Domain appears not to have suspended");
1090 goto out;
1091 }
We use the value long before the domain is told to suspend.
regards
john
next prev parent reply other threads:[~2007-01-23 22:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-23 22:01 save/restore race John Levon
2007-01-23 22:15 ` Ian Pratt
2007-01-23 22:48 ` John Levon [this message]
2007-01-23 23:38 ` Ian Pratt
2007-01-24 2:10 ` John Levon
2007-01-24 2:19 ` Ian Pratt
2007-01-24 3:13 ` [PATCH] " John Levon
2007-01-24 10:07 ` Steven Hand
2007-02-06 15:04 ` Srikanth SM
2007-02-06 15:13 ` John Levon
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