Re: [PATCH] KVM: x86: Increase the number of fixed MTRR regs to 10

[Paolo Bonzini]

Il 18/08/2014 16:31, Nadav Amit ha scritto:
> The cause for the blue-screen appears to be seabios, which leaves only 0x20 slots for “smp_mtrr”s.
> Apparently, the increase in the variable range MTRR count caused it to exhaust the available slots.
> As a result, some MSRs are not initialised by the BIOS (specifically, 3.5-4GB are not marked as UC), and cause Windows to panic.
> 
> Once we increase the size of the array smp_mtrr in seabios, Windows boots.
> 
> Paolo, you may wish to revert the patch. Please note that it was applied to some stable branches.

Thanks.  I'll post a patch to SeaBIOS too, since this should happen on
bare metal too.

Paolo
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