Re: [Xen-devel] [PATCH v3] VT-d PI: track the vcpu number in pi blocking list

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 24.05.17 at 08:56, <chao.gao@xxxxxxxxx> wrote:
> --- a/xen/arch/x86/hvm/vmx/vmx.c
> +++ b/xen/arch/x86/hvm/vmx/vmx.c
> @@ -82,6 +82,7 @@ static int vmx_vmfunc_intercept(struct cpu_user_regs *regs);
>  struct vmx_pi_blocking_vcpu {
>      struct list_head     list;
>      spinlock_t           lock;
> +    uint32_t             counter;

Is there any reason for this to be fixed width? Other than that the
non-tracing parts look fine, but I really wonder whether the
introduction of the counter and the tracing wouldn't better be split.

Jan


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