From: Will Deacon <will.deacon@arm.com>
To: Christopher Covington <cov@codeaurora.org>
Cc: "Marc Zyngier" <marc.zyngier@arm.com>,
"Mark Rutland" <mark.rutland@arm.com>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Christoffer Dall" <christoffer.dall@linaro.org>,
kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org,
shankerd@codeaurora.org, timur@codeaurora.org,
"Jonathan Corbet" <corbet@lwn.net>,
linux-doc@vger.kernel.org, "Jon Masters" <jcm@redhat.com>,
"Neil Leeder" <nleeder@codeaurora.org>,
"Mark Langsdorf" <mlangsdo@redhat.com>
Subject: Re: [PATCH v4 2/4] arm64: Work around Falkor erratum 1003
Date: Wed, 1 Feb 2017 16:33:58 +0000 [thread overview]
Message-ID: <20170201163358.GG8177@arm.com> (raw)
In-Reply-To: <b4cf83d2-ae05-3362-bc23-2341d00516dc@codeaurora.org>
On Wed, Feb 01, 2017 at 11:29:22AM -0500, Christopher Covington wrote:
> On 01/31/2017 12:56 PM, Marc Zyngier wrote:
> > Given that all ARMv8 CPUs can support SW_PAN, it is more likely to be
> > enabled than the ARMv8.1 PAN. I'd vote for supporting the workaround in
> > that case too, and hope that people do enable the HW version.
>
> Okay, I'll do my best to add support for the SW PAN case. I rebased and
> submitted v6 of the E1009 patch [1] so that it no longer depends on this
> patch landing first, if you all are inclined to pick it up while work on
> this E1003 patch continues.
The alternative is not enabling SW_PAN (at runtime) if this errata is
present, along with a warning stating that hardware-PAN should be
enabled in kconfig instead. Not sure what distributions will make of that
though.
> 1. https://patchwork.kernel.org/patch/9547923/
Yup, I queued that one locally and I'll push to -next tomorrow.
Thanks,
Will
WARNING: multiple messages have this Message-ID (diff)
From: Will Deacon <will.deacon@arm.com>
To: Christopher Covington <cov@codeaurora.org>
Cc: Mark Langsdorf <mlangsdo@redhat.com>,
kvm@vger.kernel.org, Marc Zyngier <marc.zyngier@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
timur@codeaurora.org, Jonathan Corbet <corbet@lwn.net>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Neil Leeder <nleeder@codeaurora.org>,
Jon Masters <jcm@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>,
kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v4 2/4] arm64: Work around Falkor erratum 1003
Date: Wed, 1 Feb 2017 16:33:58 +0000 [thread overview]
Message-ID: <20170201163358.GG8177@arm.com> (raw)
In-Reply-To: <b4cf83d2-ae05-3362-bc23-2341d00516dc@codeaurora.org>
On Wed, Feb 01, 2017 at 11:29:22AM -0500, Christopher Covington wrote:
> On 01/31/2017 12:56 PM, Marc Zyngier wrote:
> > Given that all ARMv8 CPUs can support SW_PAN, it is more likely to be
> > enabled than the ARMv8.1 PAN. I'd vote for supporting the workaround in
> > that case too, and hope that people do enable the HW version.
>
> Okay, I'll do my best to add support for the SW PAN case. I rebased and
> submitted v6 of the E1009 patch [1] so that it no longer depends on this
> patch landing first, if you all are inclined to pick it up while work on
> this E1003 patch continues.
The alternative is not enabling SW_PAN (at runtime) if this errata is
present, along with a warning stating that hardware-PAN should be
enabled in kconfig instead. Not sure what distributions will make of that
though.
> 1. https://patchwork.kernel.org/patch/9547923/
Yup, I queued that one locally and I'll push to -next tomorrow.
Thanks,
Will
WARNING: multiple messages have this Message-ID (diff)
From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 2/4] arm64: Work around Falkor erratum 1003
Date: Wed, 1 Feb 2017 16:33:58 +0000 [thread overview]
Message-ID: <20170201163358.GG8177@arm.com> (raw)
In-Reply-To: <b4cf83d2-ae05-3362-bc23-2341d00516dc@codeaurora.org>
On Wed, Feb 01, 2017 at 11:29:22AM -0500, Christopher Covington wrote:
> On 01/31/2017 12:56 PM, Marc Zyngier wrote:
> > Given that all ARMv8 CPUs can support SW_PAN, it is more likely to be
> > enabled than the ARMv8.1 PAN. I'd vote for supporting the workaround in
> > that case too, and hope that people do enable the HW version.
>
> Okay, I'll do my best to add support for the SW PAN case. I rebased and
> submitted v6 of the E1009 patch [1] so that it no longer depends on this
> patch landing first, if you all are inclined to pick it up while work on
> this E1003 patch continues.
The alternative is not enabling SW_PAN (at runtime) if this errata is
present, along with a warning stating that hardware-PAN should be
enabled in kconfig instead. Not sure what distributions will make of that
though.
> 1. https://patchwork.kernel.org/patch/9547923/
Yup, I queued that one locally and I'll push to -next tomorrow.
Thanks,
Will
next prev parent reply other threads:[~2017-02-01 16:34 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-25 15:52 [PATCH v4 1/4] arm64: Define Falkor v1 CPU Christopher Covington
2017-01-25 15:52 ` Christopher Covington
2017-01-25 15:52 ` Christopher Covington
2017-01-25 15:52 ` [PATCH v4 2/4] arm64: Work around Falkor erratum 1003 Christopher Covington
2017-01-25 15:52 ` Christopher Covington
2017-01-25 15:52 ` Christopher Covington
2017-01-27 14:38 ` Mark Rutland
2017-01-27 14:38 ` Mark Rutland
2017-01-27 14:38 ` Mark Rutland
2017-01-27 14:43 ` Mark Rutland
2017-01-27 14:43 ` Mark Rutland
2017-01-27 14:43 ` Mark Rutland
2017-01-27 21:52 ` Christopher Covington
2017-01-27 21:52 ` Christopher Covington
2017-01-27 21:52 ` Christopher Covington
2017-01-30 10:56 ` Mark Rutland
2017-01-30 10:56 ` Mark Rutland
2017-01-30 10:56 ` Mark Rutland
2017-01-30 22:09 ` Christopher Covington
2017-01-30 22:09 ` Christopher Covington
2017-01-30 22:09 ` Christopher Covington
2017-01-27 19:18 ` Timur Tabi
2017-01-27 19:18 ` Timur Tabi
2017-01-27 19:18 ` Timur Tabi
2017-01-31 12:37 ` Mark Rutland
2017-01-31 12:37 ` Mark Rutland
2017-01-31 12:37 ` Mark Rutland
2017-01-31 17:48 ` Christopher Covington
2017-01-31 17:48 ` Christopher Covington
2017-01-31 17:48 ` Christopher Covington
2017-01-31 17:56 ` Marc Zyngier
2017-01-31 17:56 ` Marc Zyngier
2017-01-31 17:56 ` Marc Zyngier
2017-02-01 16:29 ` Christopher Covington
2017-02-01 16:29 ` Christopher Covington
2017-02-01 16:33 ` Will Deacon [this message]
2017-02-01 16:33 ` Will Deacon
2017-02-01 16:33 ` Will Deacon
2017-02-01 17:36 ` Catalin Marinas
2017-02-01 17:36 ` Catalin Marinas
2017-02-01 17:41 ` Will Deacon
2017-02-01 17:41 ` Will Deacon
2017-02-01 17:41 ` Will Deacon
2017-02-01 17:49 ` Catalin Marinas
2017-02-01 17:49 ` Catalin Marinas
2017-02-01 17:49 ` Catalin Marinas
2017-02-01 17:51 ` Catalin Marinas
2017-02-01 17:51 ` Catalin Marinas
2017-02-01 17:59 ` Will Deacon
2017-02-01 17:59 ` Will Deacon
2017-02-01 18:22 ` Catalin Marinas
2017-02-01 18:22 ` Catalin Marinas
2017-02-01 18:34 ` Will Deacon
2017-02-01 18:34 ` Will Deacon
2017-02-01 18:34 ` Will Deacon
2017-02-01 18:38 ` Catalin Marinas
2017-02-01 18:38 ` Catalin Marinas
2017-02-08 0:36 ` Christopher Covington
2017-02-08 0:36 ` Christopher Covington
2017-02-08 0:36 ` Christopher Covington
2017-01-25 15:52 ` [PATCH v4 3/4] arm64: Use __tlbi() macros in KVM code Christopher Covington
2017-01-25 15:52 ` Christopher Covington
2017-01-25 15:52 ` Christopher Covington
2017-01-25 19:39 ` Christoffer Dall
2017-01-25 19:39 ` Christoffer Dall
2017-01-27 13:53 ` Will Deacon
2017-01-27 13:53 ` Will Deacon
2017-01-27 13:53 ` Will Deacon
2017-02-01 17:02 ` Punit Agrawal
2017-02-01 17:02 ` Punit Agrawal
2017-02-01 17:02 ` Punit Agrawal
2017-02-01 17:08 ` Will Deacon
2017-02-01 17:08 ` Will Deacon
2017-02-01 17:08 ` Will Deacon
2017-02-01 17:14 ` Punit Agrawal
2017-02-01 17:14 ` Punit Agrawal
2017-02-01 17:14 ` Punit Agrawal
2017-01-27 15:03 ` Will Deacon
2017-01-27 15:03 ` Will Deacon
2017-01-27 15:03 ` Will Deacon
2017-01-25 15:52 ` [PATCH v4 4/4] arm64: Work around Falkor erratum 1009 Christopher Covington
2017-01-25 15:52 ` Christopher Covington
2017-01-25 15:52 ` Christopher Covington
2017-01-27 15:07 ` Will Deacon
2017-01-27 15:07 ` Will Deacon
2017-01-27 15:07 ` Will Deacon
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