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Re: [Xen-devel] [ANNOUNCE] Xen 3.0.4 release candidate 2

To: Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [ANNOUNCE] Xen 3.0.4 release candidate 2
From: Hollis Blanchard <hollisb@xxxxxxxxxx>
Date: Tue, 02 Jan 2007 13:50:59 -0600
Cc: Jimi Xenidis <jimix@xxxxxxxxxxxxxx>, Keir Fraser <keir@xxxxxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Magnus Damm <magnus.damm@xxxxxxxxx>, Horms <horms@xxxxxxxxxxxx>
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Reply-to: Hollis Blanchard <hollisb@xxxxxxxxxx>
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I didn't pay much attention to the lengthy "packed" discussions of the
past. From a quick Google, it looks like the issues are that packed
doesn't work on Plan 9, and compounds an already bad situation on
PowerPC when Xen requires us to fake 16-bit atomic accesses.

-- 
Hollis Blanchard
IBM Linux Technology Center

On Mon, 2006-12-18 at 16:31 +0000, Ian Campbell wrote:
> On Mon, 2006-12-18 at 21:48 +0900, Magnus Damm wrote:
> > The ELF notes for kexec / kdump are screwed up on x86_64.
> 
> That was due to 12977:af39d20b2b728941421ef18e5c5b1012852eec80[0] which
> I have now reverted. The reversion will be
> 13080:4ef0dbe95eac33033abeee36a8f13eaaeb9d5639 once it comes through
> regression testing.
> 
> Hollis, what was the warning the change was introduced to avoid? If you
> have any ideas for another workaround for them in the 3.0.4 release we'd
> be grateful to hear it ASAP -- Keir plans to roll the final RC in the
> next 24 hours.
> 
> Cheers,
> Ian.
> 
> [0] http://xenbits2.xensource.com/xen-unstable.hg?cs=12977
> 
> > $ readelf -a vmcore-3.0.4-rc2-x86_64
> > [snip]
> > Notes at offset 0x00000120 with length 0x000002c8:
> >   Owner         Data size       Description
> >   CORE          0x00000150      NT_PRSTATUS (prstatus structure)
> >   CORE          0x00000150      NT_PRSTATUS (prstatus structure)
> >
> > $ readelf -a vmcore-3.0.4-rc1-x86_64
> > [snip]
> > Notes at offset 0x00000120 with length 0x00000380:
> >   Owner         Data size       Description
> >   CORE          0x00000150      NT_PRSTATUS (prstatus structure)
> >   Xen           0x00000020      Unknown note type: (0x01000002)
> >   CORE          0x00000150      NT_PRSTATUS (prstatus structure)
> >   Xen           0x00000020      Unknown note type: (0x01000002)
> >   Xen           0x00000048      Unknown note type: (0x01000001)
> >
> > x86_32 seems to work as expected though.
> >
> > / magnus



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