[PATCH] arm64: KVM: export current vcpu->pause state via pseudo regs

Alex Bennée alex.bennee at linaro.org
Mon Aug 4 05:35:15 PDT 2014

Christoffer Dall writes:

> On Thu, Jul 31, 2014 at 07:21:44PM +0200, Paolo Bonzini wrote:
>> Il 31/07/2014 19:04, Peter Maydell ha scritto:
>> > On 31 July 2014 17:57, Paolo Bonzini <pbonzini at redhat.com> wrote:
>> >> Il 09/07/2014 15:55, Alex Bennée ha scritto:
>> No, it's not.  It's just the state of the CPU, s390 will be using it too.
>> On x86 the states are uninitialized (UNINITIALIZED), stopped
>> (INIT_RECEIVED), running (RUNNABLE), halted (HALTED).  CPU 0 starts in
>> RUNNABLE state, other CPUs start in UNINITIALIZED state.  There are
>> x86-specific cases (uninitialized) and x86-isms (the INIT_RECEIVED
>> name), but the idea is widely applicable.
> Alex, I think it makes perfect sense to use GET/SET_MP_STATE, will you
> revise the patch?

I agree we should use the API that is explicitly for this so I'm looking
at re-doing the patch now.

> (Don't forget to update the documentation to reflect it is now supported
> on ARM, and which states are used to represent what there.)
> Thanks,
> -Christoffer

Alex Bennée

More information about the linux-arm-kernel mailing list