From: Borislav Petkov <bp@alien8.de>
To: Kim Phillips <kim.phillips@amd.com>
Cc: x86@kernel.org, Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@redhat.com>,
Joao Martins <joao.m.martins@oracle.com>,
Jonathan Corbet <corbet@lwn.net>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
David Woodhouse <dwmw@amazon.co.uk>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Juergen Gross <jgross@suse.com>,
Peter Zijlstra <peterz@infradead.org>,
Tony Luck <tony.luck@intel.com>, Babu Moger <Babu.Moger@amd.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
kvm@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] x86/speculation: Support Automatic IBRS
Date: Fri, 4 Nov 2022 22:52:13 +0100 [thread overview]
Message-ID: <Y2WJjdY3wwQl9/q9@zn.tnic> (raw)
In-Reply-To: <20221104213651.141057-3-kim.phillips@amd.com>
On Fri, Nov 04, 2022 at 04:36:50PM -0500, Kim Phillips wrote:
> - Allow for spectre_v2=autoibrs in the kernel command line,
> reverting to auto-selection if the feature isn't available.
Why?
What the whole logic here should do is enable autoibrs when detected
automatically, without the need for the user to even select it as it is
the superior mitigation.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2022-11-04 21:52 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-04 21:36 [PATCH 0/3] " Kim Phillips
2022-11-04 21:36 ` [PATCH 1/3] x86/cpufeatures: Add support for cpuid leaf 80000021/EAX (FeatureExt2Eax) Kim Phillips
2022-11-04 21:48 ` Borislav Petkov
2022-11-15 23:10 ` Kim Phillips
2022-11-16 11:59 ` Borislav Petkov
2022-11-16 20:22 ` Sean Christopherson
2022-11-16 21:01 ` Borislav Petkov
2022-11-04 21:36 ` [PATCH 2/3] x86/speculation: Support Automatic IBRS Kim Phillips
2022-11-04 21:52 ` Borislav Petkov [this message]
2022-11-05 11:10 ` Peter Zijlstra
2022-11-07 22:39 ` Kim Phillips
2022-11-07 23:41 ` Dave Hansen
2022-11-08 8:06 ` Peter Zijlstra
2022-11-11 12:09 ` Borislav Petkov
2022-11-11 12:40 ` Thadeu Lima de Souza Cascardo
2022-11-12 0:46 ` Kim Phillips
2022-11-12 0:54 ` Jim Mattson
2022-11-05 11:39 ` David Laight
2022-11-07 22:40 ` Kim Phillips
2022-11-04 21:36 ` [PATCH 3/3] x86/speculation: Support Automatic IBRS under virtualization Kim Phillips
2022-11-04 22:00 ` Jim Mattson
2022-11-07 22:29 ` Kim Phillips
2022-11-07 22:42 ` Jim Mattson
2022-11-08 22:48 ` Kim Phillips
2022-11-08 22:59 ` Jim Mattson
2022-11-06 8:38 ` Paolo Bonzini
2022-11-04 22:06 ` [PATCH 0/3] x86/speculation: Support Automatic IBRS Dave Hansen
2022-11-07 22:43 ` Kim Phillips
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