linux-kernel - Re: [PATCH] x86,cpu: add X86_FEATURE

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Message-ID: <20240926081044.GAZvUXBEUlSZt6dD-I@fat_crate.local>
Date: Thu, 26 Sep 2024 10:10:44 +0200
From: Borislav Petkov <bp@...en8.de>
To: Rik van Riel <riel@...riel.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	kernel-team@...a.com
Subject: Re: [PATCH] x86,cpu: add X86_FEATURE_INVLPGB flag

On Wed, Sep 25, 2024 at 12:46:39PM -0400, Rik van Riel wrote:
> I would like to avoid TLB flush IPIs for the top N (maybe 8 or 16?)
> TLB flushing processes in the system.  We can figure out what these
> processes are by keeping a score of TLB flushes * number of CPUs over
> some time period.

Documentation/arch/x86/cpuinfo.rst

What does that have to do with showing the flag in /proc/cpuinfo?

-- 
Regards/Gruss,
    Boris.

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