From: Josh Poimboeuf <jpoimboe@redhat.com>
To: Will Deacon <will.deacon@arm.com>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>, Borislav Petkov <bp@alien8.de>,
"H . Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Jiri Kosina <jikos@kernel.org>, Waiman Long <longman@redhat.com>,
Andrea Arcangeli <aarcange@redhat.com>,
Jon Masters <jcm@redhat.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
linuxppc-dev@lists.ozlabs.org,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
linux-s390@vger.kernel.org,
Catalin Marinas <catalin.marinas@arm.com>,
linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Tyler Hicks <tyhicks@canonical.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [PATCH RFC 5/5] arm64/speculation: Add support for 'cpu_spec_mitigations=' cmdline options
Date: Fri, 5 Apr 2019 11:03:51 -0500 [thread overview]
Message-ID: <20190405160351.5l4wbmool5m4rkua@treble> (raw)
In-Reply-To: <20190405144414.GB7662@fuggles.cambridge.arm.com>
On Fri, Apr 05, 2019 at 03:44:14PM +0100, Will Deacon wrote:
> Hi Josh,
>
> On Thu, Apr 04, 2019 at 11:44:15AM -0500, Josh Poimboeuf wrote:
> > Configure arm64 runtime CPU speculation bug mitigations in accordance
> > with the 'cpu_spec_mitigations=' cmdline options. This affects
> > Meltdown and Speculative Store Bypass.
> >
> > The default behavior is unchanged.
> >
> > Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
> > ---
> > Documentation/admin-guide/kernel-parameters.txt | 2 ++
> > arch/arm64/kernel/cpu_errata.c | 4 ++++
> > arch/arm64/kernel/cpufeature.c | 6 ++++++
> > 3 files changed, 12 insertions(+)
>
> Just wanted to make you aware that this is probably going to conflict badly
> with some patches we have pending to hook up the sysfs entries:
>
> http://lists.infradead.org/pipermail/linux-arm-kernel/2019-March/640326.html
>
> That patch series isn't quite there yet, so I'm expecting a v7, but I think
> it will change the shape of this patch quite a lot.
Thanks for the heads up Will. I will drop the arm64 patch for now then.
--
Josh
next prev parent reply other threads:[~2019-04-05 16:04 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-04 16:44 [PATCH RFC 0/5] cpu/speculation: Add 'cpu_spec_mitigations=' cmdline options Josh Poimboeuf
2019-04-04 16:44 ` [PATCH RFC 1/5] " Josh Poimboeuf
2019-04-04 16:49 ` Josh Poimboeuf
2019-04-05 13:12 ` Borislav Petkov
2019-04-05 14:20 ` Josh Poimboeuf
2019-04-05 15:20 ` Borislav Petkov
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
2019-04-04 16:44 ` [PATCH RFC 2/5] x86/speculation: Add support for " Josh Poimboeuf
2019-04-05 13:57 ` Borislav Petkov
2019-04-05 14:31 ` Josh Poimboeuf
2019-04-05 15:26 ` Borislav Petkov
2019-04-05 16:05 ` Josh Poimboeuf
2019-04-05 15:18 ` Randy Dunlap
2019-04-05 15:30 ` Josh Poimboeuf
2019-04-04 16:44 ` [PATCH RFC 3/5] powerpc/speculation: " Josh Poimboeuf
2019-04-04 19:49 ` Jiri Kosina
2019-04-04 20:01 ` Timothy Pearson
2019-04-10 6:06 ` Michael Ellerman
2019-04-11 4:02 ` Josh Poimboeuf
2019-04-04 16:44 ` [PATCH RFC 4/5] s390/speculation: " Josh Poimboeuf
2019-04-04 16:44 ` [PATCH RFC 5/5] arm64/speculation: " Josh Poimboeuf
2019-04-05 14:39 ` Steven Price
2019-04-05 14:43 ` Josh Poimboeuf
2019-04-05 14:44 ` Will Deacon
2019-04-05 16:03 ` Josh Poimboeuf [this message]
2019-04-04 16:50 ` [PATCH RFC 0/5] cpu/speculation: Add " Waiman Long
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