Re: [Xen-devel] [PATCH v2 9/9] x86/AMD: Dump AMD VPMU info

[Suravee Suthikulanit <suravee.suthikulpanit@xxxxxxx>]

This is nice.  Tested and Acked.

Thanks

Suravee

On 4/12/2013 12:59 PM, Boris Ostrovsky wrote:
> Dump VPMU registers on AMD in the 'q' keyhandler.
>
> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
> ---
>   xen/arch/x86/hvm/svm/vpmu.c | 42 +++++++++++++++++++++++++++++++++++++++++-
>   1 file changed, 41 insertions(+), 1 deletion(-)
>
> diff --git a/xen/arch/x86/hvm/svm/vpmu.c b/xen/arch/x86/hvm/svm/vpmu.c
> index b36ab2b..4d1fbc8 100644
> --- a/xen/arch/x86/hvm/svm/vpmu.c
> +++ b/xen/arch/x86/hvm/svm/vpmu.c
> @@ -414,13 +414,53 @@ static void amd_vpmu_destroy(struct vcpu *v)
>       }
>   }
>   
> +/* VPMU part of the 'q' keyhandler */
> +static void amd_vpmu_dump(struct vcpu *v)
> +{
> +    struct vpmu_struct *vpmu = vcpu_vpmu(v);
> +    struct amd_vpmu_context *ctxt = vpmu->context;
> +    unsigned int i;
> +
> +    printk("    VPMU state: 0x%x ", vpmu->flags);
> +    if ( !vpmu_is_set(vpmu, VPMU_CONTEXT_ALLOCATED) )
> +    {
> +         printk("\n");
> +         return;
> +    }
> +
> +    printk("(");
> +    if ( vpmu_is_set(vpmu, VPMU_PASSIVE_DOMAIN_ALLOCATED) )
> +        printk("PASSIVE_DOMAIN_ALLOCATED, ");
> +    if ( vpmu_is_set(vpmu, VPMU_FROZEN) )
> +        printk("FROZEN, ");
> +    if ( vpmu_is_set(vpmu, VPMU_CONTEXT_SAVE) )
> +        printk("SAVE, ");
> +    if ( vpmu_is_set(vpmu, VPMU_RUNNING) )
> +        printk("RUNNING, ");
> +    if ( vpmu_is_set(vpmu, VPMU_CONTEXT_LOADED) )
> +        printk("LOADED, ");
> +    printk("ALLOCATED)\n");
> +
> +    for ( i = 0; i < num_counters; i++ )
> +    {
> +        uint64_t ctrl, cntr;
> +
> +        rdmsrl(ctrls[i], ctrl);
> +        rdmsrl(counters[i], cntr);
> +        printk("      0x%08x: 0x%lx (0x%lx in HW)    0x%08x: 0x%lx (0x%lx in 
> HW)\n",
> +            ctrls[i], ctxt->ctrls[i], ctrl,
> +            counters[i], ctxt->counters[i], cntr);
> +    }
> +}
> +
>   struct arch_vpmu_ops amd_vpmu_ops = {
>       .do_wrmsr = amd_vpmu_do_wrmsr,
>       .do_rdmsr = amd_vpmu_do_rdmsr,
>       .do_interrupt = amd_vpmu_do_interrupt,
>       .arch_vpmu_destroy = amd_vpmu_destroy,
>       .arch_vpmu_save = amd_vpmu_save,
> -    .arch_vpmu_load = amd_vpmu_load
> +    .arch_vpmu_load = amd_vpmu_load,
> +    .arch_vpmu_dump = amd_vpmu_dump
>   };
>   
>   int svm_vpmu_initialise(struct vcpu *v, unsigned int vpmu_flags)


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