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Re: [Xen-devel] cannot access memory beyond end of bootstrap direct-map
| To: | Pascal Bouchareine <pascal@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] cannot access memory beyond end of bootstrap direct-map area |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Thu, 27 Aug 2009 19:55:17 +0100 |
| Cc: | |
| Delivery-date: | Thu, 27 Aug 2009 11:55:43 -0700 |
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| In-reply-to: | <20090827172817.GA25165@bar> |
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| Thread-index: | AconO87VAuFk06kLQuOK190oPj4o+gADBwKC |
| Thread-topic: | [Xen-devel] cannot access memory beyond end of bootstrap direct-map area |
| User-agent: | Microsoft-Entourage/12.20.0.090605 |
On 27/08/2009 18:28, "Pascal Bouchareine" <pascal@xxxxxxxxx> wrote: > Investigating the above message during xen 3.3 boot, found we left > a wrong assumption [modules_length == (mod[n].end - mod[0].start)] > in move_memory call, leading to an access above BOOTSTRAP_DIRECTMAP_END > and this panic on x86_32. > > In my understanding Keir's patch 18630 was fixing this kind of problem > and I'm wondering why this move_memory call didn't go away with it ? Looks like a backporting mistake. The original bug didn't happen on my system so the bad backport wasn't noticed. > If this were ok, attached patch fixes the panic on my system. You should be able to remove the bogus move_memory() call, and change absolutely nothing else. Does that also work for you? That's the change I would check in. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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