linux-kernel - Re: [PATCH v2 4/5] x86/bugs: Add attack vector controls for SSB

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Message-ID: <7vo33zwvn2wz74fg7wuflrr2gnhlkn7hwaziuzkk7brrp2morh@ltbtredcwb5x>
Date: Wed, 20 Aug 2025 23:17:23 -0700
From: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>
To: David Kaplan <david.kaplan@....com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Borislav Petkov <bp@...en8.de>, 
	Peter Zijlstra <peterz@...radead.org>, Josh Poimboeuf <jpoimboe@...nel.org>, 
	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
Subject: Re: [PATCH v2 4/5] x86/bugs: Add attack vector controls for SSB

On Tue, Aug 19, 2025 at 02:21:59PM -0500, David Kaplan wrote:
> @@ -2646,11 +2650,18 @@ early_param("spec_store_bypass_disable", ssb_parse_cmdline);
>  
>  static void __init ssb_select_mitigation(void)
>  {
> -	if (!boot_cpu_has_bug(X86_BUG_SPEC_STORE_BYPASS) || cpu_mitigations_off()) {
> +	if (!boot_cpu_has_bug(X86_BUG_SPEC_STORE_BYPASS)) {

Nothing major, but this change belongs to the next patch that cleans up
cpu_mitigations_off().