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Re: [PATCH] x86/features: More AMD features


  • To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Tue, 19 Mar 2024 08:33:59 +0100
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  • Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Tue, 19 Mar 2024 07:34:11 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 18.03.2024 19:13, Andrew Cooper wrote:
> I'm not sure about FSRSC as a name, but it definitely beats AMD's longhand
> name of FAST_REP_SCASB.

With FSRS already used, I guess that's the closest we can get to keep
names for similar features similar.

> --- a/tools/misc/xen-cpuid.c
> +++ b/tools/misc/xen-cpuid.c
> @@ -91,6 +91,7 @@ static const char *const str_e1c[32] =
>      [24] = "perfctr-nb", /* [25] */
>      [26] = "dbx",        [27] = "perftsc",
>      [28] = "pcx-l2i",    [29] = "monitorx",
> +    [30] = "dbext2",
>  };

AMD calls this AddrMaskExt (PM) or AdMskExtn (PPR). I can see where your
different name choice is coming from, yet I still wonder whether we should
try to stay closer where possible.

Jan



 


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