From: Timothy Pearson <tpearson@raptorengineering.com>
To: Jiri Kosina <jikos@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
Paul Mackerras <paulus@samba.org>,
"H . Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@kernel.org>,
Andrea Arcangeli <aarcange@redhat.com>,
linux-s390@vger.kernel.org, x86@kernel.org,
Will Deacon <will.deacon@arm.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Waiman Long <longman@redhat.com>,
linux-arch@vger.kernel.org, Jon Masters <jcm@redhat.com>,
Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org, Tyler Hicks <tyhicks@canonical.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH RFC 3/5] powerpc/speculation: Add support for 'cpu_spec_mitigations=' cmdline options
Date: Thu, 4 Apr 2019 15:01:04 -0500 (CDT) [thread overview]
Message-ID: <401506569.4710878.1554408064001.JavaMail.zimbra@raptorengineeringinc.com> (raw)
Message-ID: <20190404200104.INe2nbO9Bg__dm-H_nSr2d4XkjWKVig0XnWHSYky-mk@z> (raw)
In-Reply-To: <nycvar.YFH.7.76.1904042145590.9803@cbobk.fhfr.pm>
Will be joining in ~ 5 mins. Getting Chromium set up here.
----- Original Message -----
> From: "Jiri Kosina" <jikos@kernel.org>
> To: "Josh Poimboeuf" <jpoimboe@redhat.com>
> Cc: "Peter Zijlstra" <peterz@infradead.org>, "Heiko Carstens" <heiko.carstens@de.ibm.com>, "Paul Mackerras"
> <paulus@samba.org>, "H . Peter Anvin" <hpa@zytor.com>, "Ingo Molnar" <mingo@kernel.org>, "Andrea Arcangeli"
> <aarcange@redhat.com>, linux-s390@vger.kernel.org, x86@kernel.org, "Will Deacon" <will.deacon@arm.com>, "Linus
> Torvalds" <torvalds@linux-foundation.org>, "Catalin Marinas" <catalin.marinas@arm.com>, "Waiman Long"
> <longman@redhat.com>, linux-arch@vger.kernel.org, "Jon Masters" <jcm@redhat.com>, "Borislav Petkov" <bp@alien8.de>,
> "Andy Lutomirski" <luto@kernel.org>, "Thomas Gleixner" <tglx@linutronix.de>, linux-arm-kernel@lists.infradead.org,
> "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>, linux-kernel@vger.kernel.org, "Tyler Hicks" <tyhicks@canonical.com>,
> "Martin Schwidefsky" <schwidefsky@de.ibm.com>, linuxppc-dev@lists.ozlabs.org
> Sent: Thursday, April 4, 2019 2:49:05 PM
> Subject: Re: [PATCH RFC 3/5] powerpc/speculation: Add support for 'cpu_spec_mitigations=' cmdline options
> On Thu, 4 Apr 2019, Josh Poimboeuf wrote:
>
>> Configure powerpc CPU runtime speculation bug mitigations in accordance
>> with the 'cpu_spec_mitigations=' cmdline options. This affects
>> Meltdown, Spectre v1, Spectre v2, and Speculative Store Bypass.
> [ ... snip ... ]
>> - if (!no_nospec)
>> + if (!no_nospec && cpu_spec_mitigations != CPU_SPEC_MITIGATIONS_OFF)
>
> '!no_nospec' is something that I am sure will come back to hunt me in my
> bad dreams.
>
> But that's been there already, and fixing it is out of scope of this
> patch. Other than that, as discussed previously -- I really like this new
> global option. Feel free to add
>
> Reviewed-by: Jiri Kosina <jkosina@suse.cz>
>
> for the whole set.
>
> Thanks,
>
> --
> Jiri Kosina
> SUSE Labs
next prev parent reply other threads:[~2019-04-04 20:01 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190404164410.FyWPYQnV_AC5qVM5C3Jcx1ysIg_8piJ6yY46gIDHjZU@z>
2019-04-04 16:44 ` [PATCH RFC 0/5] cpu/speculation: Add 'cpu_spec_mitigations=' cmdline options Josh Poimboeuf
[not found] ` <20190404164411.Gy3S4HmcWfyKhBREvXHY5FPLSwAUc9Z1y2KsB07Pmm4@z>
2019-04-04 16:44 ` [PATCH RFC 1/5] " Josh Poimboeuf
[not found] ` <20190404164908.r4AYeBs3-dkedAjA4YfFz402EZXqM30A9pdq22wsHN4@z>
2019-04-04 16:49 ` Josh Poimboeuf
[not found] ` <20190405131211.Q2NjuOAdnJlvlrA0AG2RZhInDwko2zhWKJScqKXcYKQ@z>
2019-04-05 13:12 ` Borislav Petkov
[not found] ` <20190405142048.qJvWe7mR5XJIzpc5altU1UI3DVF6Fm9Yjvd8BKsNEy4@z>
2019-04-05 14:20 ` Josh Poimboeuf
[not found] ` <20190405152059.08_dCkDXzn8b5SW1QVcJq5DyPHq85ZVw5ngPousboME@z>
2019-04-05 15:20 ` Borislav Petkov
[not found] ` <20190405160136.4tt7RfRZIEc9AAQ_k2zJ0AX2Oh1p-cAAYSJuQZnqAA0@z>
2019-04-05 16:01 ` Borislav Petkov
2019-04-05 16:18 ` Josh Poimboeuf
2019-04-10 5:48 ` Michael Ellerman
2019-04-10 8:30 ` Borislav Petkov
2019-04-10 12:10 ` Thomas Gleixner
2019-04-11 13:15 ` Josh Poimboeuf
2019-04-12 2:41 ` Michael Ellerman
2019-04-12 2:29 ` Michael Ellerman
[not found] ` <20190404164412.goQjNbtLtNK5Xhety5Y2SrWdf5jOoB1EZ0aqJLJdxHw@z>
2019-04-04 16:44 ` [PATCH RFC 2/5] x86/speculation: Add support for " Josh Poimboeuf
[not found] ` <20190405135712.h8C5NFnWFSMYwkqvOodZqwvUhkB0wm8DZ17FpWjVXoY@z>
2019-04-05 13:57 ` Borislav Petkov
[not found] ` <20190405143101.ehopmxN-UUs4udfFq_s3rur7f147JR8sKQYe2BlTfXQ@z>
2019-04-05 14:31 ` Josh Poimboeuf
[not found] ` <20190405152650.DqBCc8B5pVR8hG3DaAapjrpOZ6Bf20rzQgqS0JGbMCs@z>
2019-04-05 15:26 ` Borislav Petkov
2019-04-05 16:05 ` Josh Poimboeuf
[not found] ` <20190405151809.loO3BRPkxdSIbjhaOkHcgSzX7AEXml11-UID3nahj9s@z>
2019-04-05 15:18 ` Randy Dunlap
[not found] ` <20190405153048.O_Br143nVxVMU9csW4aOtbQpM08-f4KvQ02DvzZx_s8@z>
2019-04-05 15:30 ` Josh Poimboeuf
[not found] ` <20190404164413.IgIvLuMu4GLkDdvSHFyBaGh9dXrNjMsr8AmhWG65Rf0@z>
2019-04-04 16:44 ` [PATCH RFC 3/5] powerpc/speculation: " Josh Poimboeuf
[not found] ` <20190404194905.qR9T-btAf0BVt0YfG6H0h19JLAE1AXADvXFhopuL0f4@z>
2019-04-04 19:49 ` Jiri Kosina
[not found] ` <20190404200104.INe2nbO9Bg__dm-H_nSr2d4XkjWKVig0XnWHSYky-mk@z>
2019-04-04 20:01 ` Timothy Pearson [this message]
2019-04-10 6:06 ` Michael Ellerman
2019-04-11 4:02 ` Josh Poimboeuf
[not found] ` <20190404164414.cktiJTWLfAEnxNs2wsW9YNTw8sV7S6dkTOl6n1bXI5U@z>
2019-04-04 16:44 ` [PATCH RFC 4/5] s390/speculation: " Josh Poimboeuf
[not found] ` <20190404164415.7sB56buW6sV8GzaJvfyTl6CefUF2WNywA7izu14xWn8@z>
2019-04-04 16:44 ` [PATCH RFC 5/5] arm64/speculation: " Josh Poimboeuf
[not found] ` <20190405143958.68mhX8hptXUHk3hwMQ9WfDPhB-0ONhSHKqYsnMrEJjs@z>
2019-04-05 14:39 ` Steven Price
[not found] ` <20190405144356.9p1BhXsIjOJE5oKY8oqxUMAecWPbYA158YjKfCNCYAk@z>
2019-04-05 14:43 ` Josh Poimboeuf
[not found] ` <20190405144414.nk-UumeN0sm2XyB05ZZDspKvSwX8qAkPSsQ9oDw_tKQ@z>
2019-04-05 14:44 ` Will Deacon
2019-04-05 16:03 ` Josh Poimboeuf
[not found] ` <20190404165054.iJV6ETT60vreD-Rl1FsxCk4pKUcybxmjvQFzn5MlZDs@z>
2019-04-04 16:50 ` [PATCH RFC 0/5] cpu/speculation: Add " Waiman Long
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