Re: [kvm-unit-tests PATCH] x86: pmu: Test full-width counter writes support

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On Tue, May 11, 2021 at 11:33 PM Like Xu <like.xu@xxxxxxxxxxxxxxx> wrote:
>
> On 2021/5/12 5:27, Jim Mattson wrote:
> > On Fri, May 29, 2020 at 12:44 AM Like Xu <like.xu@xxxxxxxxxxxxxxx> wrote:
> >>
> >> When the full-width writes capability is set, use the alternative MSR
> >> range to write larger sign counter values (up to GP counter width).
> >>
> >> Signed-off-by: Like Xu <like.xu@xxxxxxxxxxxxxxx>
> >> ---
> >
> >> +       /*
> >> +        * MSR_IA32_PMCn supports writing values ​​up to GP counter width,
> >> +        * and only the lowest bits of GP counter width are valid.
> >> +        */
> >
> > Could you rewrite this comment in ASCII, please? I would do it, but
> > I'm not sure what the correct translation is.
> >
>
> My first submitted patch says that
> they are just Unicode "ZERO WIDTH SPACE".
>
> https://lore.kernel.org/kvm/20200508083218.120559-2-like.xu@xxxxxxxxxxxxxxx/
>
> Here you go:
>
> ---
>
>  From 1b058846aabcd7a85b5c5f41cb2b63b6a348bdc4 Mon Sep 17 00:00:00 2001
> From: Like Xu <like.xu@xxxxxxxxxxxxxxx>
> Date: Wed, 12 May 2021 14:26:40 +0800
> Subject: [PATCH] x86: pmu: Fix a comment about full-width counter writes
>   support
>
> Remove two Unicode characters 'ZERO WIDTH SPACE' (U+200B).
>
> Fixes: 22f2901a0e ("x86: pmu: Test full-width counter writes support")
> Reported-by: Jim Mattson <jmattson@xxxxxxxxxx>
> Signed-off-by: Like Xu <like.xu@xxxxxxxxxxxxxxx>
> ---
>   x86/pmu.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/x86/pmu.c b/x86/pmu.c
> index 5a3d55b..6cb3506 100644
> --- a/x86/pmu.c
> +++ b/x86/pmu.c
> @@ -510,7 +510,7 @@ static void  check_gp_counters_write_width(void)
>          }
>
>          /*
> -        * MSR_IA32_PMCn supports writing values ​​up to GP
> counter width,
> +        * MSR_IA32_PMCn supports writing values up to GP counter width,
>           * and only the lowest bits of GP counter width are valid.
>           */
>          for (i = 0; i < num_counters; i++) {
> --
> 2.31.1

Paolo:

Did this patch get overlooked? I'm still seeing the unicode characters
in this comment.




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