Messages in this thread | | | Date | Tue, 10 Jul 2012 17:37:47 +0200 | From | Olaf Hering <> | Subject | Re: [Xen-devel] incorrect layout of globals from head_64.S during kexec boot |
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On Tue, Jul 10, Ian Campbell wrote:
> On Tue, 2012-07-10 at 10:51 -0400, Konrad Rzeszutek Wilk wrote: > > On Tue, Jul 10, 2012 at 08:46:34AM -0600, Ian Campbell wrote: > > > On Tue, 2012-07-10 at 10:14 -0400, Konrad Rzeszutek Wilk wrote: > > > > Which brings me to another question - say we do use this patch, what > > > > if the decompressor overwrites the old kernels .data section. Won't > > > > we run into this problem again? > > > > > > I've not really been following this thread that closely but wouldn't the > > > right answer be for the original kernel to unmap the shared info on > > > kexec? Or maybe remap it up to some high/reserved address? Can it read > > > > That would be the right answer I think, but I don't see the a VCPU_deregister > > call (only VCPU_register). > > Is the issue here vcpuinfo or the shared info (or both)?
shared info is the issue in PVonHVM.
Olaf
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