[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Error booting Xen
The patch as I already said is letting me boot into the Xen, but the system is now resetting stating XSAVE as the cause. I have attached links to two cases where system was reset as the result. I don't think that problem is fully solved yet. http://paste2.org/Ky56Z92g http://paste2.org/3hcbG6L7 Regards, Harman On Tue, Jan 26, 2016 at 6:21 PM, Harmandeep Kaur <write.harmandeep@xxxxxxxxx> wrote: > Hi guys, > > I tried the patch and I am very happy to inform you > all that the patch has solved my problem. Now I am > able to boot Xen without disabling XSAVE. I have > full log of boot at http://paste2.org/gVW0Z9nm (if > any one is interested. also "XXX Hello, this is my > first mod :)" is printed by my mod, so ignore that > one). > > Thank you guys for your help. > Regards, > Harman > > On Mon, Jan 25, 2016 at 7:12 PM, Jan Beulich <JBeulich@xxxxxxxx> wrote: >>>>> On 21.01.16 at 16:14, <dario.faggioli@xxxxxxxxxx> wrote: >>> On Wed, 2016-01-20 at 03:06 -0700, Jan Beulich wrote: >>>> > > > On 19.01.16 at 20:55, <write.harmandeep@xxxxxxxxx> wrote: >>>> > >>>> > $ '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. >> >> So here you go. Instead of a debugging one, I hope I have at >> once fixed the issue in a suitable way. Whether we'd like to keep >> the debugging output we can decide later on. >> >> Both patches need to be applied; while the order shouldn't matter, >> the alignment one is a prereq to the actual change. >> >> Jan >> _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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