From: Borislav Petkov <bp@alien8.de>
To: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Anand K Mistry <amistry@google.com>,
x86@kernel.org, asteinhauser@google.com, tglx@linutronix.de,
joelaf@google.com, "H. Peter Anvin" <hpa@zytor.com>,
Ingo Molnar <mingo@redhat.com>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Mark Gross <mgross@linux.intel.com>,
Mike Rapoport <rppt@kernel.org>,
Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
Tony Luck <tony.luck@intel.com>, Waiman Long <longman@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] x86/speculation: Allow IBPB to be conditionally enabled on CPUs with always-on STIBP
Date: Thu, 5 Nov 2020 21:36:45 +0100 [thread overview]
Message-ID: <20201105203645.GL25636@zn.tnic> (raw)
In-Reply-To: <23d2bdb5-ebe6-b943-5c07-6e3087710651@amd.com>
On Thu, Nov 05, 2020 at 02:32:10PM -0600, Tom Lendacky wrote:
> Does it need a Fixes: tag?
Yah, this one:
Fixes: 21998a351512 ("x86/speculation: Avoid force-disabling IBPB based on STIBP and enhanced IBRS.")
because it set mode to SPECTRE_V2_USER_STRICT_PREFERRED, leading to the
inability to set the TIF_SPEC_IB bit later.
>
> Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Added, thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2020-11-05 20:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-05 5:33 [PATCH v2] x86/speculation: Allow IBPB to be conditionally enabled on CPUs with always-on STIBP Anand K Mistry
2020-11-05 20:32 ` Tom Lendacky
2020-11-05 20:36 ` Borislav Petkov [this message]
2020-11-06 11:33 ` [tip: x86/urgent] " tip-bot2 for Anand K Mistry
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