From: Marc Zyngier <marc.zyngier@arm.com>
To: Jon Masters <jcm@jonmasters.org>
Cc: <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<kvmarm@lists.cs.columbia.edu>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Peter Maydell <peter.maydell@linaro.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Robin Murphy <robin.murphy@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Jon Masters <jcm@redhat.com>,
christoffer.dall@arm.com
Subject: Re: [PATCH v2 00/16] arm64: Add SMCCC v1.1 support and CVE-2017-5715 (Spectre variant 2) mitigation
Date: Sat, 09 Jun 2018 15:06:41 +0100 [thread overview]
Message-ID: <86sh5w8366.wl-marc.zyngier@arm.com> (raw)
In-Reply-To: <f6da84f8-b01e-f8cd-521b-6f2348b963be@jonmasters.org>
Hi Jon,
On Sat, 09 Jun 2018 14:22:27 +0100,
Jon Masters wrote:
>
> Hi Marc,
>
> On 01/29/2018 12:45 PM, Marc Zyngier wrote:
>
> > ARM has recently published a SMC Calling Convention (SMCCC)
> > specification update[1] that provides an optimised calling convention
> > and optional, discoverable support for mitigating CVE-2017-5715. ARM
> > Trusted Firmware (ATF) has already gained such an implementation[2].
>
> Some questions:
>
> 1). What's the plan to implement the boot time on/off control for
> spectre_v2 mitigations?
None so far. It can only be disabled at compile time.
> 2). What's the plan to handle live migration of VMs?
[I assume that by "migration of VMs, you actually mean migration of
the mitigation state]
As I mentioned in response to your comment on the variant-4 series,
this is a work in progress, and is mentioned in the cover letter of
that series. Hopefully I'll find time to work on it next week.
M.
--
Jazz is not dead, it just smell funny.
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <marc.zyngier@arm.com>
To: Jon Masters <jcm@jonmasters.org>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Peter Maydell <peter.maydell@linaro.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Robin Murphy <robin.murphy@arm.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Jon Masters <jcm@redhat.com>,
christoffer.dall@arm.com
Subject: Re: [PATCH v2 00/16] arm64: Add SMCCC v1.1 support and CVE-2017-5715 (Spectre variant 2) mitigation
Date: Sat, 09 Jun 2018 15:06:41 +0100 [thread overview]
Message-ID: <86sh5w8366.wl-marc.zyngier@arm.com> (raw)
In-Reply-To: <f6da84f8-b01e-f8cd-521b-6f2348b963be@jonmasters.org>
Hi Jon,
On Sat, 09 Jun 2018 14:22:27 +0100,
Jon Masters wrote:
>
> Hi Marc,
>
> On 01/29/2018 12:45 PM, Marc Zyngier wrote:
>
> > ARM has recently published a SMC Calling Convention (SMCCC)
> > specification update[1] that provides an optimised calling convention
> > and optional, discoverable support for mitigating CVE-2017-5715. ARM
> > Trusted Firmware (ATF) has already gained such an implementation[2].
>
> Some questions:
>
> 1). What's the plan to implement the boot time on/off control for
> spectre_v2 mitigations?
None so far. It can only be disabled at compile time.
> 2). What's the plan to handle live migration of VMs?
[I assume that by "migration of VMs, you actually mean migration of
the mitigation state]
As I mentioned in response to your comment on the variant-4 series,
this is a work in progress, and is mentioned in the cover letter of
that series. Hopefully I'll find time to work on it next week.
M.
--
Jazz is not dead, it just smell funny.
WARNING: multiple messages have this Message-ID (diff)
From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 00/16] arm64: Add SMCCC v1.1 support and CVE-2017-5715 (Spectre variant 2) mitigation
Date: Sat, 09 Jun 2018 15:06:41 +0100 [thread overview]
Message-ID: <86sh5w8366.wl-marc.zyngier@arm.com> (raw)
In-Reply-To: <f6da84f8-b01e-f8cd-521b-6f2348b963be@jonmasters.org>
Hi Jon,
On Sat, 09 Jun 2018 14:22:27 +0100,
Jon Masters wrote:
>
> Hi Marc,
>
> On 01/29/2018 12:45 PM, Marc Zyngier wrote:
>
> > ARM has recently published a SMC Calling Convention (SMCCC)
> > specification update[1] that provides an optimised calling convention
> > and optional, discoverable support for mitigating CVE-2017-5715. ARM
> > Trusted Firmware (ATF) has already gained such an implementation[2].
>
> Some questions:
>
> 1). What's the plan to implement the boot time on/off control for
> spectre_v2 mitigations?
None so far. It can only be disabled at compile time.
> 2). What's the plan to handle live migration of VMs?
[I assume that by "migration of VMs, you actually mean migration of
the mitigation state]
As I mentioned in response to your comment on the variant-4 series,
this is a work in progress, and is mentioned in the cover letter of
that series. Hopefully I'll find time to work on it next week.
M.
--
Jazz is not dead, it just smell funny.
next prev parent reply other threads:[~2018-06-09 14:07 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-29 17:45 [PATCH v2 00/16] arm64: Add SMCCC v1.1 support and CVE-2017-5715 (Spectre variant 2) mitigation Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 01/16] arm64: KVM: Fix SMCCC handling of unimplemented SMC/HVC calls Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 02/16] arm: " Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 03/16] arm/arm64: KVM: Consolidate the PSCI include files Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 04/16] arm/arm64: KVM: Add PSCI_VERSION helper Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-30 13:15 ` Robin Murphy
2018-01-30 13:15 ` Robin Murphy
2018-01-30 14:52 ` Marc Zyngier
2018-01-30 14:52 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 05/16] arm/arm64: KVM: Add smccc accessors to PSCI code Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 06/16] arm/arm64: KVM: Implement PSCI 1.0 support Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 07/16] arm/arm64: KVM: Add PSCI version selection API Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-31 17:38 ` Andrew Jones
2018-01-31 17:38 ` Andrew Jones
2018-01-31 17:45 ` Marc Zyngier
2018-01-31 17:45 ` Marc Zyngier
2018-01-31 18:03 ` Andrew Jones
2018-01-31 18:03 ` Andrew Jones
2018-01-31 18:03 ` Andrew Jones
2018-01-31 18:36 ` Marc Zyngier
2018-01-31 18:36 ` Marc Zyngier
2018-01-31 19:15 ` Andrew Jones
2018-01-31 19:15 ` Andrew Jones
2018-01-31 18:11 ` kbuild test robot
2018-01-31 18:11 ` kbuild test robot
2018-01-29 17:45 ` [PATCH v2 08/16] arm/arm64: KVM: Advertise SMCCC v1.1 Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-30 0:23 ` Russell King - ARM Linux
2018-01-30 0:23 ` Russell King - ARM Linux
2018-01-30 12:28 ` Marc Zyngier
2018-01-30 12:28 ` Marc Zyngier
2018-01-30 12:28 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 09/16] arm/arm64: KVM: Turn kvm_psci_version into a static inline Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 10/16] arm64: KVM: Report SMCCC_ARCH_WORKAROUND_1 BP hardening support Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-30 12:38 ` Robin Murphy
2018-01-30 12:38 ` Robin Murphy
2018-01-29 17:45 ` [PATCH v2 11/16] arm64: KVM: Add SMCCC_ARCH_WORKAROUND_1 fast handling Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 12/16] firmware/psci: Expose PSCI conduit Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:55 ` Lorenzo Pieralisi
2018-01-29 17:55 ` Lorenzo Pieralisi
2018-01-29 17:45 ` [PATCH v2 13/16] firmware/psci: Expose SMCCC version through psci_ops Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 18:39 ` Lorenzo Pieralisi
2018-01-29 18:39 ` Lorenzo Pieralisi
2018-01-30 12:09 ` Marc Zyngier
2018-01-30 12:09 ` Marc Zyngier
2018-01-30 12:55 ` Robin Murphy
2018-01-30 12:55 ` Robin Murphy
2018-01-30 13:51 ` Marc Zyngier
2018-01-30 13:51 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 14/16] arm/arm64: smccc: Make function identifiers an unsigned quantity Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` [PATCH v2 15/16] arm/arm64: smccc: Implement SMCCC v1.1 inline primitive Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 19:07 ` Robin Murphy
2018-01-29 19:07 ` Robin Murphy
2018-01-30 8:54 ` Marc Zyngier
2018-01-30 8:54 ` Marc Zyngier
2018-01-29 21:45 ` Ard Biesheuvel
2018-01-29 21:45 ` Ard Biesheuvel
2018-01-30 12:27 ` Marc Zyngier
2018-01-30 12:27 ` Marc Zyngier
2018-01-30 12:29 ` Ard Biesheuvel
2018-01-30 12:29 ` Ard Biesheuvel
2018-01-30 12:29 ` Ard Biesheuvel
2018-01-29 17:45 ` [PATCH v2 16/16] arm64: Add ARM_SMCCC_ARCH_WORKAROUND_1 BP hardening support Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 17:45 ` Marc Zyngier
2018-01-29 19:41 ` Ard Biesheuvel
2018-01-29 19:41 ` Ard Biesheuvel
2018-01-30 12:10 ` Marc Zyngier
2018-01-30 12:10 ` Marc Zyngier
2018-01-31 13:56 ` Hanjun Guo
2018-01-31 13:56 ` Hanjun Guo
2018-01-31 13:56 ` Hanjun Guo
2018-01-31 14:11 ` Marc Zyngier
2018-01-31 14:11 ` Marc Zyngier
2018-01-31 14:35 ` Ard Biesheuvel
2018-01-31 14:35 ` Ard Biesheuvel
2018-01-31 14:38 ` Ard Biesheuvel
2018-01-31 14:38 ` Ard Biesheuvel
2018-01-31 15:05 ` Marc Zyngier
2018-01-31 15:05 ` Marc Zyngier
2018-02-01 2:40 ` Hanjun Guo
2018-02-01 2:40 ` Hanjun Guo
2018-02-01 6:52 ` Hanjun Guo
2018-02-01 6:52 ` Hanjun Guo
2018-02-01 6:52 ` Hanjun Guo
2018-02-01 8:53 ` Marc Zyngier
2018-02-01 8:53 ` Marc Zyngier
2018-02-02 3:43 ` Hanjun Guo
2018-02-02 3:43 ` Hanjun Guo
2018-06-09 13:22 ` [PATCH v2 00/16] arm64: Add SMCCC v1.1 support and CVE-2017-5715 (Spectre variant 2) mitigation Jon Masters
2018-06-09 13:22 ` Jon Masters
2018-06-09 14:06 ` Marc Zyngier [this message]
2018-06-09 14:06 ` Marc Zyngier
2018-06-09 14:06 ` Marc Zyngier
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