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From: Thomas Gleixner <tglx@linutronix.de>
To: Anthony Steinhauser <asteinhauser@google.com>,
	linux-kernel@vger.kernel.org
Cc: mingo@redhat.com, bp@alien8.de,
	Anthony Steinhauser <asteinhauser@google.com>
Subject: Re: [PATCH] Return ENXIO instead of EPERM when speculation control is unimplemented
Date: Mon, 20 Jan 2020 20:02:54 +0100	[thread overview]
Message-ID: <87o8uy2boh.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20191229164830.62144-1-asteinhauser@google.com>

Anthony,

Anthony Steinhauser <asteinhauser@google.com> writes:
>  		return "";
>  
>  	switch (spectre_v2_user) {
> -	case SPECTRE_V2_USER_NONE:
> +	case SPECTRE_V2_USER_UNAVAILABLE:
> +		return ", STIBP: unavailable";

Shouldn't this for correctness differentiate between the case where the
STIBP mitigation feature is not available and the case where STIBP is
not used because SMT is not possible?

Thanks,

        tglx

  reply	other threads:[~2020-01-20 19:03 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-29 16:48 [PATCH] Return ENXIO instead of EPERM when speculation control is unimplemented Anthony Steinhauser
2020-01-20 19:02 ` Thomas Gleixner [this message]
2020-01-21 11:19   ` Anthony Steinhauser
2020-01-21 11:33 ` Borislav Petkov
2020-01-21 11:57   ` Anthony Steinhauser

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