Re: [PATCH v11 04/12] x86/mm: get INVLPGB count max from CPUID

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

To: Rik van Riel <riel@xxxxxxxxxxx>
Subject: Re: [PATCH v11 04/12] x86/mm: get INVLPGB count max from CPUID
From: Borislav Petkov <bp@xxxxxxxxx>
Date: Wed, 19 Feb 2025 19:23:22 +0100
Cc: x86@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, peterz@xxxxxxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, zhengqi.arch@xxxxxxxxxxxxx, nadav.amit@xxxxxxxxx, thomas.lendacky@xxxxxxx, kernel-team@xxxxxxxx, linux-mm@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, jackmanb@xxxxxxxxxx, jannh@xxxxxxxxxx, mhklinux@xxxxxxxxxxx, andrew.cooper3@xxxxxxxxxx, Manali Shukla <Manali.Shukla@xxxxxxx>
In-reply-to: <b749384b7dea020880057359d06d4e9172c7aaec.camel@surriel.com>
References: <20250213161423.449435-1-riel@surriel.com> <20250213161423.449435-5-riel@surriel.com> <20250219115626.GMZ7XG6s-5ftg1XLoZ@fat_crate.local> <b749384b7dea020880057359d06d4e9172c7aaec.camel@surriel.com>

On Wed, Feb 19, 2025 at 12:52:56PM -0500, Rik van Riel wrote:
> Should I modify get_cpu_cap() to store
> c->x86_capabilities[CPUID_8000_0008_EDX] ?
> 
> Currently only the EBX data is stored there,
> while invlpgb_count_max comes from EDX.

No, you should simply assign invlpgb_count_max there.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette

References:
- [PATCH v11 00/12] AMD broadcast TLB invalidation
  - From: Rik van Riel
- [PATCH v11 04/12] x86/mm: get INVLPGB count max from CPUID
  - From: Rik van Riel
- Re: [PATCH v11 04/12] x86/mm: get INVLPGB count max from CPUID
  - From: Borislav Petkov
- Re: [PATCH v11 04/12] x86/mm: get INVLPGB count max from CPUID
  - From: Rik van Riel

Prev by Date: Re: [PATCH 6.6 000/389] 6.6.76-rc2 review
Next by Date: Re: [PATCH RFC] mm: Fix kernel BUG when userfaultfd_move encounters swapcache
Previous by thread: Re: [PATCH v11 04/12] x86/mm: get INVLPGB count max from CPUID
Next by thread: Re: [PATCH v11 04/12] x86/mm: get INVLPGB count max from CPUID
Index(es):
- Date
- Thread

[Index of Archives] [Linux ARM Kernel] [Linux ARM] [Linux Omap] [Fedora ARM] [IETF Annouce] [Bugtraq] [Linux OMAP] [Linux MIPS] [eCos] [Asterisk Internet PBX] [Linux API]