linux-kernel - Re: [PATCH v11 06/12] x86/mm: use INVLPGB for kernel TLB flushes

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Message-ID: <724d17ce3fbe07d1d9404f8f32ba518071bcfa4a.camel@surriel.com>
Date: Tue, 18 Feb 2025 13:00:38 -0500
From: Rik van Riel <riel@...riel.com>
To: Yosry Ahmed <yosry.ahmed@...ux.dev>
Cc: Dave Hansen <dave.hansen@...el.com>, Peter Zijlstra
 <peterz@...radead.org>, 	x86@...nel.org, linux-kernel@...r.kernel.org,
 bp@...en8.de, 	dave.hansen@...ux.intel.com, zhengqi.arch@...edance.com,
 nadav.amit@...il.com, 	thomas.lendacky@....com, kernel-team@...a.com,
 linux-mm@...ck.org, 	akpm@...ux-foundation.org, jackmanb@...gle.com,
 jannh@...gle.com, 	mhklinux@...look.com, andrew.cooper3@...rix.com, Manali
 Shukla	 <Manali.Shukla@....com>
Subject: Re: [PATCH v11 06/12] x86/mm: use INVLPGB for kernel TLB flushes

On Sat, 2025-02-15 at 02:08 +0000, Yosry Ahmed wrote:
> 
> So I think what Dave wants (and I agree) is:
> 	if (!broadcast_kernel_range_flush(info))
> 		ipi_kernel_range_flush(info)
> 
> Where ipi_kernel_range_flush() contains old_thing1() and oldthing2().

I like this idea. I changed the code to add that
for the next version! Thank you.

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