linux-kernel - Re: [v6 1/1] x86/bugs: Implement mitigation for Predictive Store Forwarding

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Date:   Tue, 18 May 2021 22:50:01 -0700
From:   Pawan Gupta <writetopawan@...il.com>
To:     Ramakrishna Saripalli <rsaripal@....com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org, tglx@...utronix.de,
        mingo@...hat.com, bp@...en8.de, hpa@...or.com,
        Jonathan Corbet <corbet@....net>, bsd@...hat.com
Subject: Re: [v6 1/1] x86/bugs: Implement mitigation for Predictive Store
 Forwarding

On 17.05.2021 17:00, Ramakrishna Saripalli wrote:
>From: Ramakrishna Saripalli <rk.saripalli@....com>
[...]
>--- a/arch/x86/include/asm/nospec-branch.h
>+++ b/arch/x86/include/asm/nospec-branch.h
>@@ -198,6 +198,12 @@ enum ssb_mitigation {
> 	SPEC_STORE_BYPASS_SECCOMP,
> };
>
>+/* The Predictive Store forward control variant */
>+enum psf_mitigation {
>+	PREDICTIVE_STORE_FORWARD_NONE,
>+	PREDICTIVE_STORE_FORWARD_DISABLE,
>+};
>+

This can be moved to bugs.c which is the only user of psf_mitigation.

Thanks,
Pawan