From: Jon Masters <jcm@redhat.com>
To: speck@linutronix.de
Subject: [MODERATED] Encrypted Message
Date: Wed, 6 Mar 2019 11:22:03 -0500 [thread overview]
Message-ID: <4dfc7ea3-ae98-50bc-aa34-20d191e84f77@redhat.com> (raw)
In-Reply-To: <20190304171721.e6qyv722i32ilza4@treble>
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From: Jon Masters <jcm@redhat.com>
To: speck for Josh Poimboeuf <speck@linutronix.de>
Subject: Re: Encrypted Message
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On 3/4/19 12:17 PM, speck for Josh Poimboeuf wrote:
> On Sun, Mar 03, 2019 at 10:58:01PM -0500, speck for Jon Masters wrote:
>
>> On 3/3/19 8:24 PM, speck for Josh Poimboeuf wrote:
>>
>>> + if (sched_smt_active() && !boot_cpu_has(X86_BUG_MSBDS_ONLY))
>>> + pr_warn_once(MDS_MSG_SMT);
>>
>> It's never fully safe to use SMT. I get that if we only had MSBDS then
>> it's unlikely we'll hit the e.g. power state change cases needed to
>> exploit it but I think it would be prudent to display something anyway?
>
> My understanding is that the idle state changes are mitigated elsewhere
> in the MDS patches, so it should be safe in theory.
Looked at it again. Agree. Sorry about that.
Jon.
--
Computer Architect | Sent with my Fedora powered laptop
next prev parent reply other threads:[~2019-03-06 16:22 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-04 1:21 [MODERATED] [PATCH RFC 0/4] Proposed cmdline improvements Josh Poimboeuf
2019-03-04 1:23 ` [MODERATED] [PATCH RFC 1/4] 1 Josh Poimboeuf
2019-03-04 3:55 ` [MODERATED] Encrypted Message Jon Masters
2019-03-04 17:06 ` [MODERATED] " Josh Poimboeuf
2019-03-04 7:30 ` [MODERATED] Re: [PATCH RFC 1/4] 1 Greg KH
2019-03-04 7:45 ` [MODERATED] Encrypted Message Jon Masters
2019-03-04 1:24 ` [MODERATED] [PATCH RFC 2/4] 2 Josh Poimboeuf
2019-03-04 7:31 ` [MODERATED] " Greg KH
2019-03-04 17:11 ` Josh Poimboeuf
2019-03-04 1:24 ` [MODERATED] [PATCH RFC 3/4] 3 Josh Poimboeuf
2019-03-04 3:58 ` [MODERATED] Encrypted Message Jon Masters
2019-03-04 17:17 ` [MODERATED] " Josh Poimboeuf
2019-03-06 16:22 ` Jon Masters [this message]
2019-03-04 7:33 ` [MODERATED] Re: [PATCH RFC 3/4] 3 Greg KH
2019-03-04 17:18 ` Josh Poimboeuf
2019-03-04 1:25 ` [MODERATED] [PATCH RFC 4/4] 4 Josh Poimboeuf
2019-03-04 4:07 ` [MODERATED] Encrypted Message Jon Masters
-- strict thread matches above, loose matches on Subject: below --
2019-03-05 16:43 [MODERATED] Starting to go public? Linus Torvalds
2019-03-05 17:02 ` [MODERATED] " Andrew Cooper
2019-03-05 20:36 ` Jiri Kosina
2019-03-05 22:31 ` Andrew Cooper
2019-03-06 16:18 ` [MODERATED] Encrypted Message Jon Masters
2019-03-05 17:10 ` Jon Masters
2019-03-01 21:47 [patch V6 00/14] MDS basics 0 Thomas Gleixner
2019-03-01 21:47 ` [patch V6 06/14] MDS basics 6 Thomas Gleixner
2019-03-04 6:28 ` [MODERATED] Encrypted Message Jon Masters
2019-03-01 21:47 ` [patch V6 08/14] MDS basics 8 Thomas Gleixner
2019-03-04 6:57 ` [MODERATED] Encrypted Message Jon Masters
2019-03-04 7:06 ` Jon Masters
2019-03-04 8:12 ` Jon Masters
2019-03-05 15:34 ` Thomas Gleixner
2019-03-06 16:21 ` [MODERATED] " Jon Masters
2019-03-01 21:47 ` [patch V6 10/14] MDS basics 10 Thomas Gleixner
2019-03-04 6:45 ` [MODERATED] Encrypted Message Jon Masters
2019-03-01 21:47 ` [patch V6 12/14] MDS basics 12 Thomas Gleixner
2019-03-04 5:47 ` [MODERATED] Encrypted Message Jon Masters
2019-03-04 5:30 ` Jon Masters
2019-02-24 15:07 [MODERATED] [PATCH v6 00/43] MDSv6 Andi Kleen
2019-02-24 15:07 ` [MODERATED] [PATCH v6 10/43] MDSv6 Andi Kleen
2019-02-25 16:30 ` [MODERATED] " Greg KH
2019-02-25 16:41 ` [MODERATED] Encrypted Message Jon Masters
2019-02-24 15:07 ` [MODERATED] [PATCH v6 31/43] MDSv6 Andi Kleen
2019-02-25 15:19 ` [MODERATED] " Greg KH
2019-02-25 15:34 ` Andi Kleen
2019-02-25 15:49 ` Greg KH
2019-02-25 15:52 ` [MODERATED] Encrypted Message Jon Masters
2019-02-25 16:00 ` [MODERATED] " Greg KH
2019-02-25 16:19 ` [MODERATED] " Jon Masters
2019-02-22 22:24 [patch V4 00/11] MDS basics Thomas Gleixner
2019-02-22 22:24 ` [patch V4 04/11] x86/speculation/mds: Add mds_clear_cpu_buffer() Thomas Gleixner
2019-02-26 14:19 ` [MODERATED] " Josh Poimboeuf
2019-03-01 20:58 ` [MODERATED] Encrypted Message Jon Masters
2019-03-01 22:14 ` Jon Masters
2019-02-21 23:44 [patch V3 0/9] MDS basics 0 Thomas Gleixner
2019-02-21 23:44 ` [patch V3 4/9] MDS basics 4 Thomas Gleixner
2019-02-22 7:45 ` [MODERATED] Encrypted Message Jon Masters
2019-02-20 15:07 [patch V2 00/10] MDS basics+ 0 Thomas Gleixner
2019-02-20 15:07 ` [patch V2 04/10] MDS basics+ 4 Thomas Gleixner
2019-02-20 17:10 ` [MODERATED] " mark gross
2019-02-21 19:26 ` [MODERATED] Encrypted Message Tim Chen
2019-02-19 12:44 [patch 0/8] MDS basics 0 Thomas Gleixner
2019-02-21 16:14 ` [MODERATED] Encrypted Message Jon Masters
2019-02-07 23:41 [MODERATED] [PATCH v3 0/6] PERFv3 Andi Kleen
2019-02-07 23:41 ` [MODERATED] [PATCH v3 2/6] PERFv3 Andi Kleen
2019-02-08 0:51 ` [MODERATED] Re: [SUSPECTED SPAM][PATCH " Andrew Cooper
2019-02-08 9:01 ` Peter Zijlstra
2019-02-08 9:39 ` Peter Zijlstra
2019-02-08 10:53 ` [MODERATED] [RFC][PATCH] performance walnuts Peter Zijlstra
2019-02-15 23:45 ` [MODERATED] Encrypted Message Jon Masters
2019-01-12 1:29 [MODERATED] [PATCH v4 00/28] MDSv4 2 Andi Kleen
2019-01-12 1:29 ` [MODERATED] [PATCH v4 05/28] MDSv4 10 Andi Kleen
2019-01-14 19:20 ` [MODERATED] " Dave Hansen
2019-01-18 7:33 ` [MODERATED] Encrypted Message Jon Masters
2019-01-14 23:39 ` Tim Chen
2019-01-12 1:29 ` [MODERATED] [PATCH v4 10/28] MDSv4 24 Andi Kleen
2019-01-15 1:05 ` [MODERATED] Encrypted Message Tim Chen
2018-06-12 17:29 [MODERATED] FYI - Reading uncached memory Jon Masters
2018-06-14 16:59 ` [MODERATED] Encrypted Message Tim Chen
2018-05-29 19:42 [MODERATED] [PATCH 0/2] L1TF KVM 0 Paolo Bonzini
[not found] ` <20180529194240.7F1336110A@crypto-ml.lab.linutronix.de>
2018-05-29 22:49 ` [PATCH 1/2] L1TF KVM 1 Thomas Gleixner
2018-05-29 23:54 ` [MODERATED] " Andrew Cooper
2018-05-30 9:01 ` Paolo Bonzini
2018-06-04 8:24 ` [MODERATED] " Martin Pohlack
2018-06-04 13:11 ` [MODERATED] Is: Tim, Q to you. Was:Re: " Konrad Rzeszutek Wilk
2018-06-04 17:59 ` [MODERATED] Encrypted Message Tim Chen
2018-06-05 23:34 ` Tim Chen
2018-06-05 23:37 ` Tim Chen
2018-06-07 19:11 ` Tim Chen
2018-05-17 20:53 SSB status - V18 pushed out Thomas Gleixner
2018-05-18 13:54 ` [MODERATED] Is: Sleep states ?Was:Re: " Konrad Rzeszutek Wilk
2018-05-18 14:29 ` Thomas Gleixner
2018-05-18 19:50 ` [MODERATED] Encrypted Message Tim Chen
2018-05-02 21:51 [patch V11 00/16] SSB 0 Thomas Gleixner
2018-05-03 4:27 ` [MODERATED] Encrypted Message Tim Chen
2018-04-24 9:06 [MODERATED] L1D-Fault KVM mitigation Joerg Roedel
2018-04-24 9:35 ` [MODERATED] " Peter Zijlstra
2018-04-24 9:48 ` David Woodhouse
2018-04-24 11:04 ` Peter Zijlstra
2018-05-23 9:45 ` David Woodhouse
2018-05-24 9:45 ` Peter Zijlstra
2018-05-24 15:04 ` Thomas Gleixner
2018-05-24 15:33 ` Thomas Gleixner
2018-05-24 23:18 ` [MODERATED] Encrypted Message Tim Chen
2018-05-25 18:22 ` Tim Chen
2018-05-26 19:14 ` L1D-Fault KVM mitigation Thomas Gleixner
2018-05-29 19:29 ` [MODERATED] Encrypted Message Tim Chen
2018-05-29 21:14 ` L1D-Fault KVM mitigation Thomas Gleixner
2018-05-30 16:38 ` [MODERATED] Encrypted Message Tim Chen
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