linux-kernel - Re: [RFC v2 2/9] x86/mm: Introduce Remote Action Request MSRs

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Message-ID: <20250521114901.GBaC29rWZ4IyVyZacP@fat_crate.local>
Date: Wed, 21 May 2025 13:49:01 +0200
From: Borislav Petkov <bp@...en8.de>
To: Rik van Riel <riel@...riel.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, x86@...nel.org,
	kernel-team@...a.com, dave.hansen@...ux.intel.com, luto@...nel.org,
	peterz@...radead.org, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, nadav.amit@...il.com,
	Yu-cheng Yu <yu-cheng.yu@...el.com>
Subject: Re: [RFC v2 2/9] x86/mm: Introduce Remote Action Request MSRs

On Mon, May 19, 2025 at 09:02:27PM -0400, Rik van Riel wrote:
> From: Yu-cheng Yu <yu-cheng.yu@...el.com>
> 
> Remote Action Request (RAR) is a TLB flushing broadcast facility.
> This patch introduces RAR MSRs.  RAR is introduced in later patches.
> 
> There are five RAR MSRs:
> 
>   MSR_CORE_CAPABILITIES
>   MSR_IA32_RAR_CTRL
>   MSR_IA32_RAR_ACT_VEC
>   MSR_IA32_RAR_PAYLOAD_BASE
>   MSR_IA32_RAR_INFO
> 
> Signed-off-by: Yu-cheng Yu <yu-cheng.yu@...el.com>
> Signed-off-by: Rik van Riel <riel@...riel.com>
> ---
>  arch/x86/include/asm/msr-index.h | 11 +++++++++++
>  1 file changed, 11 insertions(+)

You can merge this one with the previous one.

-- 
Regards/Gruss,
    Boris.

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