Re: [PATCH 24/26] KVM: PPC: PV mtmsrd L=0 and mtmsr

Alexander Graf
2010-06-27T09:10:38Z

Am 26.06.2010 um 19:03 schrieb Segher Boessenkool <segher-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org
>:

>> There is also a form of mtmsr where all bits need to be addressed.
>> While the
>> PPC64 Linux kernel behaves resonably well here, the PPC32 one never
>> uses the
>> L=1 form but does mtmsr even for simple things like only changing EE.
>
> You make it sound like the 32-bit kernel does something stupid, while
> there is no other choice. The "L=1" thing only exists for 64-bit.

Oh, so that's why :). That doesn't really change the fact that it's
very hard to distinguish between a mtmsr that only changes MSR_EE vs
one that changes MSR_IR for example :).

Alex

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