Re: [PATCH 01/15] KVM: PPC: Make register read/write wrappers always work

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On 03/08/2010 04:14 PM, Alexander Graf wrote:

We're looking at two different ifs here.

1) GPR Inside the PACA or not (volatile vs non-volatile)

This is constant. Volatile registers go to the PACA; non-volatiles go to
the vcpu struct.

Okay - so no if ().

2) GPR actually loaded in the PACA

When we're in vcpu_load context the registers in the PACA, when not
they're in the vcpu struct


If you have a really easy and fast way to assure that we're always
inside a vcpu_load context, all is great. I could probably even just put
in a BUG_ON(not in vcpu_load context) and make the callers safe. But
some check needs to be done.

x86 assumes in vcpu_load() context (without even a BUG_ON()). KVM_GET_REGS and friends are responsible for this.

--
error compiling committee.c: too many arguments to function

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