[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] HVM domains crash after upgrade from XEN 4.5.1 to 4.5.2
On Mon, Nov 16, 2015 at 08:16:33PM +0100, Atom2 wrote: > > > Am 16.11.15 um 16:31 schrieb Konrad Rzeszutek Wilk: > >>>>Your analysis was absolutely spot on. After re-thinking this for a > >>>>moment, I thought going down that route first would make a lot of sense > >>>>as PV guests still do work and one of the differences to HVM domUs is > >>>>that the former do _not_ require SeaBIOS. Looking at my log files of > >>>>installed packages confirmed an upgrade from SeaBIOS 1.7.5 to 1.8.2 in > >>>>the relevant timeframe which obviously had not made it to the hvmloader > >>>>of xen-4.5.1 as I did not re-compile xen after the upgrade of SeaBIOS. > >>>> > >>>>So I re-compiled xen-4.5.1 (obviously now using the installed SeaBIOS > >>>>1.8.2) and the same error as with xen-4.5.2 popped up - and that seemed > >>>>to strongly indicate that there indeed might be an issue with SeaBIOS as > >>>>this probably was the only variable that had changed from the original > >>>>install of xen-4.5.1. > >I recall seeing this way back in Fedora 20 days. I narrowed it down the > >SeaBIOS version that was a standalone package to not have CONFIG_XEN. > > > >Having that fixed in the SeaBIOS package fixed it. > Hi Konrad, Doug, Andrew (specifically added to this part of the thread)! > Konrad, you might have found an interesting point. I did have a look at the > ebuild for the failing version and in there I found the following comment: > ====== comment from ebuild ======= > # Upstream hasn't released a new binary. We snipe ours from Fedora for > now. > # http://code.coreboot.org/p/seabios/downloads/get/bios.bin-${PV}.gz > ====== end comment from ebuild ======= > which might in fact underline that there might be an issue similar to what > you described above. > > What is also pretty interesting is the fact that the old (working) SeaBIOS > version 1.7.5 installed as "bios.bin" under /usr/share/seabios is actually > 262.144 bytes in size whereas the new (invalid) SeaBIOS 1.8.2 installed in > the same location is only half as big: 131.072 bytes. > > I checked at the download site and the 1.8.2 binary version is indeed not > available from http://code.coreboot.org/p/seabios/downloads/. But both the > binary versions for 1.7.5 and 1.8.0 are available and both are acutually > 262.144 bytes in size, so I'd be very surprised if the 1.8.2 version is > really only half that size. By the way, the old working version (according > to the ebuild) was directly downloaded from the above url and also shows an > identical SHA1 digest to that version available for download there. <blinks>I thought Gentoo was all about rebuilding from source and not taking binary blobs. > > To me this looks as if something is really wrong here. If anybody of you has > access to a 1.8.2 version, could you please confirm whether there's really > that big a size difference between the 1.7.5 and the 1.8.2 versions? Or is > that difference probably attributable to the missing CONFIG_XEN option? It may be other options too - like CONFIG_XHCI, or a huge amount of other ones. > > Andrew: I havent't gotten around to run the debug version of the hypervisor > again, but if the current suspicion turns out to be true, there's probably > not much value in that anyways. Would you agree? I am not Andrew and can't really speak for him, but I am going to take a leap here and say he will agree with you. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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