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Message-ID: <Y7xjxUj+KnOEJssZ@zn.tnic>
Date: Mon, 9 Jan 2023 19:58:13 +0100
From: Borislav Petkov <bp@...en8.de>
To: Babu Moger <babu.moger@....com>
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Subject: Re: [PATCH v11 04/13] x86/cpufeatures: Add Bandwidth Monitoring
Event Configuration feature flag
On Mon, Jan 09, 2023 at 10:43:56AM -0600, Babu Moger wrote:
> diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
> index 00045123f418..db5287c06b65 100644
> --- a/arch/x86/include/asm/cpufeatures.h
> +++ b/arch/x86/include/asm/cpufeatures.h
> @@ -308,6 +308,7 @@
> #define X86_FEATURE_CALL_DEPTH (11*32+19) /* "" Call depth tracking for RSB stuffing */
> #define X86_FEATURE_MSR_TSX_CTRL (11*32+20) /* "" MSR IA32_TSX_CTRL (Intel) implemented */
> #define X86_FEATURE_SMBA (11*32+21) /* Slow Memory Bandwidth Allocation */
> +#define X86_FEATURE_BMEC (11*32+22) /* Bandwidth Monitoring Event Configuration */
If those flags are meant only for internal kernel code use - it looks like it -
and userspace doesn't care, pls put "" in front of both in the comment like the
others above them do.
This way they won't be visible in /proc/cpuinfo.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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