linux-kernel - Re: [PATCH v4 03/11] x86/bhi: Make the depth of BHB-clearing configurable

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Message-ID: <7a9f0bae-9a5a-4ece-ade6-68a6b01d4c68@suse.com>
Date: Thu, 20 Nov 2025 19:02:47 +0200
From: Nikolay Borisov <nik.borisov@...e.com>
To: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>, x86@...nel.org,
 David Kaplan <david.kaplan@....com>, "H. Peter Anvin" <hpa@...or.com>,
 Josh Poimboeuf <jpoimboe@...nel.org>, Sean Christopherson
 <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>,
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>
Cc: linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
 Asit Mallick <asit.k.mallick@...el.com>, Tao Zhang <tao1.zhang@...el.com>
Subject: Re: [PATCH v4 03/11] x86/bhi: Make the depth of BHB-clearing
 configurable

On 11/20/25 08:18, Pawan Gupta wrote:
> The BHB clearing sequence has two nested loops that determine the depth of
> BHB to be cleared. Introduce an argument to the macro to allow the loop
> count (and hence the depth) to be controlled from outside the macro.
> 
> Signed-off-by: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>

Reviewed-by: Nikolay Borisov <nik.borisov@...e.com>