Re: [Qemu-devel] [RFC QEMU 1/2] arm/virt: Initialize generic timer scale factor dynamically

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 11/7/18 7:48 PM, Bijan Mottahedeh wrote:
>  
> +static void set_system_clock_scale(void)
> +{
> +    unsigned long cntfrq_el0;
> +
> +    asm volatile("mrs %0, cntfrq_el0" : "=r"(cntfrq_el0));
> +
> +    if (cntfrq_el0 == 0) {
> +        cntfrq_el0 = GTIMER_SCALE_DEF;
> +    }
> +
> +    system_clock_scale = NANOSECONDS_PER_SECOND / (int)cntfrq_el0;
> +}

This only works for kvm.

For TCG you need to use the default always.  In particular, it won't even
compile for an x86 host.


r~
_______________________________________________
kvmarm mailing list
kvmarm@xxxxxxxxxxxxxxxxxxxxx
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm



[Index of Archives]     [Linux KVM]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux