[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Error booting Xen
On Wed, 2016-01-20 at 03:06 -0700, Jan Beulich wrote: > > > > On 19.01.16 at 20:55, <write.harmandeep@xxxxxxxxx> wrote: > >Â > > $ 'addr2line -e xen-syms ffff82d0801c1cce' returns > > 'xen/xen/arch/x86/xstate.c:387' which again points to > > xsave. Also, adding 'xsave=0' makes it boot just fine. > > Ah, I think I see the issue: We're zeroing the entire save area in > the fixup code, which will make XRSTORS fault unconditionally. > Shuai, would you please look into possible ways of fixing this? > Just setting the compressed flag may not be enough, and falling > back to plain XRSTOR doesn't seem to be an option either - I'm in > particular worried that the current model of zeroing everything > is bogus with the growing number of different components which > get loaded here. > > But of course another question then is why the XRSTORS faults > in the first place. I guess we'll need a debugging patch to dump > the full state to understand that. > If someone can produce and send such patch, I'm sure Harmandeep will be happy to give it a try on her hardware. Thanks and Regards, Dario -- <<This happens because I choose it to happen!>> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) Attachment:
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