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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] PV guest with PCI passthrough crash on Xen 4.8.3 inside KVM when booted through OVMF
On 19/02/18 18:29, Marek Marczykowski-Górecki wrote: > On Mon, Feb 19, 2018 at 06:23:40PM +0100, Juergen Gross wrote: >> On 16/02/18 20:54, Marek Marczykowski-Górecki wrote: >>> Just before the BUG(), there is a call to xen_raw_console_write(). But >>> apparently it was too early... >> >> Depends. >> >> With a debug enabled hypervisor and appropriate log levels set >> (guest_loglvl=all) you should see the message in the hypervisor log. > > I've tried with guest_loglvl=all, but there was nothing. Wouldn't it > make sense to enable this functionality also in non-debug builds - only > guarded by guest_loglvl=all option? Hmm, I think this is on purpose to avoid the possibility of a guest flooding the hypervisor log. Maybe adding a new option (e.g. guest_messages=on/off) switchable at runtime only via "xl set-parameters" would avoid the general flooding problem while enabling diagnosis of such problems? Juergen _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
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