Re: [PATCH v2 5/9] ARM: KVM: Allow the host to use the physical timer from PL1

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On Thu, Jul 5, 2012 at 12:18 PM, Marc Zyngier <marc.zyngier@xxxxxxx> wrote:
> As the host kernel has to move its timer from virtual to physical,
> let's make sure it has access to it. Otherwise, it would blow
> at a very early stage.
>
> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
> ---
>  arch/arm/kvm/init.S |    5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm/kvm/init.S b/arch/arm/kvm/init.S
> index 4db26cb..10ecdf9 100644
> --- a/arch/arm/kvm/init.S
> +++ b/arch/arm/kvm/init.S
> @@ -105,6 +105,11 @@ __do_hyp_init:
>         mcr     p15, 4, r0, c1, c0, 0   @ HSCR
>         isb
>
> +       @ make CNTP_* and CNTPCT accessible from PL1
> +       mrc     p15, 4, r0, c14, c1, 0  @ CNTHCTL
> +       orr     r0, r0, #3              @ PL1PCEN | PL1PCTEN
> +       mcr     p15, 4, r0, c14, c1, 0  @ CNTHCTL
> +
>         @ Set stack pointer and return to the kernel
>         pop     {r0, r1, r2, r12}
>         mov     sp, r1
> --
> 1.7.10.3
>
>

looks good to me
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