From: Marc Zyngier <marc.zyngier@arm.com>
To: James Morse <james.morse@arm.com>
Cc: Jonathan.Zhang@cavium.com,
Catalin Marinas <catalin.marinas@arm.com>,
Julien Thierry <julien.thierry@arm.com>,
Will Deacon <will.deacon@arm.com>,
wangxiongfeng2@huawei.com, linux-arm-kernel@lists.infradead.org,
Dongjiu Geng <gengdongjiu@huawei.com>,
kvmarm@lists.cs.columbia.edu
Subject: Re: [PATCH v4 21/21] KVM: arm64: Trap RAS error registers and set HCR_EL2's TERR & TEA
Date: Tue, 31 Oct 2017 06:32:53 +0000 [thread overview]
Message-ID: <86y3nr3jze.fsf@arm.com> (raw)
In-Reply-To: <20171019145807.23251-22-james.morse@arm.com> (James Morse's message of "Thu, 19 Oct 2017 15:58:07 +0100")
On Thu, Oct 19 2017 at 4:58:07 pm BST, James Morse <james.morse@arm.com> wrote:
> From: Dongjiu Geng <gengdongjiu@huawei.com>
>
> ARMv8.2 adds a new bit HCR_EL2.TEA which routes synchronous external
> aborts to EL2, and adds a trap control bit HCR_EL2.TERR which traps
> all Non-secure EL1&0 error record accesses to EL2.
>
> This patch enables the two bits for the guest OS, guaranteeing that
> KVM takes external aborts and traps attempts to access the physical
> error registers.
>
> ERRIDR_EL1 advertises the number of error records, we return
> zero meaning we can treat all the other registers as RAZ/WI too.
>
> Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
> [removed specific emulation, use trap_raz_wi() directly for everything,
> rephrased parts of the commit message]
> Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
M.
--
Jazz is not dead. It just smells 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 v4 21/21] KVM: arm64: Trap RAS error registers and set HCR_EL2's TERR & TEA
Date: Tue, 31 Oct 2017 06:32:53 +0000 [thread overview]
Message-ID: <86y3nr3jze.fsf@arm.com> (raw)
In-Reply-To: <20171019145807.23251-22-james.morse@arm.com> (James Morse's message of "Thu, 19 Oct 2017 15:58:07 +0100")
On Thu, Oct 19 2017 at 4:58:07 pm BST, James Morse <james.morse@arm.com> wrote:
> From: Dongjiu Geng <gengdongjiu@huawei.com>
>
> ARMv8.2 adds a new bit HCR_EL2.TEA which routes synchronous external
> aborts to EL2, and adds a trap control bit HCR_EL2.TERR which traps
> all Non-secure EL1&0 error record accesses to EL2.
>
> This patch enables the two bits for the guest OS, guaranteeing that
> KVM takes external aborts and traps attempts to access the physical
> error registers.
>
> ERRIDR_EL1 advertises the number of error records, we return
> zero meaning we can treat all the other registers as RAZ/WI too.
>
> Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com>
> [removed specific emulation, use trap_raz_wi() directly for everything,
> rephrased parts of the commit message]
> Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
M.
--
Jazz is not dead. It just smells funny.
next prev parent reply other threads:[~2017-10-31 6:31 UTC|newest]
Thread overview: 160+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-19 14:57 [PATCH v4 00/21] SError rework + RAS&IESB for firmware first support James Morse
2017-10-19 14:57 ` James Morse
2017-10-19 14:57 ` [PATCH v4 01/21] arm64: explicitly mask all exceptions James Morse
2017-10-19 14:57 ` James Morse
2017-10-19 14:57 ` [PATCH v4 02/21] arm64: introduce an order for exceptions James Morse
2017-10-19 14:57 ` James Morse
2017-10-19 14:57 ` [PATCH v4 03/21] arm64: Move the async/fiq helpers to explicitly set process context flags James Morse
2017-10-19 14:57 ` James Morse
2017-10-19 14:57 ` [PATCH v4 04/21] arm64: Mask all exceptions during kernel_exit James Morse
2017-10-19 14:57 ` James Morse
2017-10-19 14:57 ` [PATCH v4 05/21] arm64: entry.S: Remove disable_dbg James Morse
2017-10-19 14:57 ` James Morse
2017-10-19 14:57 ` [PATCH v4 06/21] arm64: entry.S: convert el1_sync James Morse
2017-10-19 14:57 ` James Morse
2017-10-19 14:57 ` [PATCH v4 07/21] arm64: entry.S convert el0_sync James Morse
2017-10-19 14:57 ` James Morse
2017-10-19 14:57 ` [PATCH v4 08/21] arm64: entry.S: convert elX_irq James Morse
2017-10-19 14:57 ` James Morse
2017-10-19 14:57 ` [PATCH v4 09/21] KVM: arm/arm64: mask/unmask daif around VHE guests James Morse
2017-10-19 14:57 ` James Morse
2017-10-30 7:40 ` Christoffer Dall
2017-10-30 7:40 ` Christoffer Dall
2017-11-02 12:14 ` James Morse
2017-11-02 12:14 ` James Morse
2017-11-03 12:45 ` Christoffer Dall
2017-11-03 12:45 ` Christoffer Dall
2017-11-03 17:19 ` James Morse
2017-11-03 17:19 ` James Morse
2017-11-06 12:42 ` Christoffer Dall
2017-11-06 12:42 ` Christoffer Dall
2017-10-19 14:57 ` [PATCH v4 10/21] arm64: entry.S: move SError handling into a C function for future expansion James Morse
2017-10-19 14:57 ` James Morse
2018-01-02 21:07 ` Adam Wallis
2018-01-02 21:07 ` Adam Wallis
2018-01-03 16:00 ` James Morse
2018-01-03 16:00 ` James Morse
2017-10-19 14:57 ` [PATCH v4 11/21] arm64: cpufeature: Detect CPU RAS Extentions James Morse
2017-10-19 14:57 ` James Morse
2017-10-31 13:14 ` Will Deacon
2017-10-31 13:14 ` Will Deacon
2017-11-02 12:15 ` James Morse
2017-11-02 12:15 ` James Morse
2017-10-19 14:57 ` [PATCH v4 12/21] arm64: kernel: Survive corrected RAS errors notified by SError James Morse
2017-10-19 14:57 ` James Morse
2017-10-31 13:50 ` Will Deacon
2017-10-31 13:50 ` Will Deacon
2017-11-02 12:15 ` James Morse
2017-11-02 12:15 ` James Morse
2017-10-19 14:57 ` [PATCH v4 13/21] arm64: cpufeature: Enable IESB on exception entry/return for firmware-first James Morse
2017-10-19 14:57 ` James Morse
2017-10-31 13:56 ` Will Deacon
2017-10-31 13:56 ` Will Deacon
2017-10-19 14:58 ` [PATCH v4 14/21] arm64: kernel: Prepare for a DISR user James Morse
2017-10-19 14:58 ` James Morse
2017-10-19 14:58 ` [PATCH v4 15/21] KVM: arm64: Set an impdef ESR for Virtual-SError using VSESR_EL2 James Morse
2017-10-19 14:58 ` James Morse
2017-10-20 16:44 ` gengdongjiu
2017-10-20 16:44 ` gengdongjiu
2017-10-23 15:26 ` James Morse
2017-10-23 15:26 ` James Morse
2017-10-24 9:53 ` gengdongjiu
2017-10-24 9:53 ` gengdongjiu
2017-10-30 7:59 ` Christoffer Dall
2017-10-30 7:59 ` Christoffer Dall
2017-10-30 10:51 ` Christoffer Dall
2017-10-30 10:51 ` Christoffer Dall
2017-10-30 15:44 ` James Morse
2017-10-30 15:44 ` James Morse
2017-10-31 5:48 ` Christoffer Dall
2017-10-31 5:48 ` Christoffer Dall
2017-10-31 6:34 ` Marc Zyngier
2017-10-31 6:34 ` Marc Zyngier
2017-10-19 14:58 ` [PATCH v4 16/21] KVM: arm64: Save/Restore guest DISR_EL1 James Morse
2017-10-19 14:58 ` James Morse
2017-10-31 4:27 ` Marc Zyngier
2017-10-31 4:27 ` Marc Zyngier
2017-10-31 5:27 ` Christoffer Dall
2017-10-31 5:27 ` Christoffer Dall
2017-10-19 14:58 ` [PATCH v4 17/21] KVM: arm64: Save ESR_EL2 on guest SError James Morse
2017-10-19 14:58 ` James Morse
2017-10-31 4:26 ` Marc Zyngier
2017-10-31 4:26 ` Marc Zyngier
2017-10-31 5:47 ` Marc Zyngier
2017-10-31 5:47 ` Marc Zyngier
2017-11-01 17:42 ` James Morse
2017-11-01 17:42 ` James Morse
2017-10-19 14:58 ` [PATCH v4 18/21] KVM: arm64: Handle RAS SErrors from EL1 on guest exit James Morse
2017-10-19 14:58 ` James Morse
2017-10-31 5:55 ` Marc Zyngier
2017-10-31 5:55 ` Marc Zyngier
2017-10-31 5:56 ` Christoffer Dall
2017-10-31 5:56 ` Christoffer Dall
2017-10-19 14:58 ` [PATCH v4 19/21] KVM: arm64: Handle RAS SErrors from EL2 " James Morse
2017-10-19 14:58 ` James Morse
2017-10-27 6:26 ` gengdongjiu
2017-10-27 6:26 ` gengdongjiu
2017-10-27 17:38 ` James Morse
2017-10-27 17:38 ` James Morse
2017-10-31 6:13 ` Marc Zyngier
2017-10-31 6:13 ` Marc Zyngier
2017-10-31 6:13 ` Christoffer Dall
2017-10-31 6:13 ` Christoffer Dall
2017-10-19 14:58 ` [PATCH v4 20/21] KVM: arm64: Take any host SError before entering the guest James Morse
2017-10-19 14:58 ` James Morse
2017-10-31 6:23 ` Christoffer Dall
2017-10-31 6:23 ` Christoffer Dall
2017-10-31 11:43 ` James Morse
2017-10-31 11:43 ` James Morse
2017-11-01 4:55 ` Christoffer Dall
2017-11-01 4:55 ` Christoffer Dall
2017-11-02 12:18 ` James Morse
2017-11-02 12:18 ` James Morse
2017-11-03 12:49 ` Christoffer Dall
2017-11-03 12:49 ` Christoffer Dall
2017-11-03 16:14 ` James Morse
2017-11-03 16:14 ` James Morse
2017-11-06 12:45 ` Christoffer Dall
2017-11-06 12:45 ` Christoffer Dall
2017-10-19 14:58 ` [PATCH v4 21/21] KVM: arm64: Trap RAS error registers and set HCR_EL2's TERR & TEA James Morse
2017-10-19 14:58 ` James Morse
2017-10-31 6:32 ` Christoffer Dall
2017-10-31 6:32 ` Christoffer Dall
2017-10-31 6:32 ` Marc Zyngier [this message]
2017-10-31 6:32 ` Marc Zyngier
2017-10-31 6:35 ` [PATCH v4 00/21] SError rework + RAS&IESB for firmware first support Christoffer Dall
2017-10-31 6:35 ` Christoffer Dall
2017-10-31 10:08 ` Will Deacon
2017-10-31 10:08 ` Will Deacon
2017-11-01 15:23 ` James Morse
2017-11-01 15:23 ` James Morse
2017-11-02 8:14 ` Christoffer Dall
2017-11-02 8:14 ` Christoffer Dall
2017-11-09 18:14 ` James Morse
2017-11-09 18:14 ` James Morse
2017-11-10 12:03 ` gengdongjiu
2017-11-10 12:03 ` gengdongjiu
2017-11-13 11:29 ` Christoffer Dall
2017-11-13 11:29 ` Christoffer Dall
2017-11-13 13:05 ` Peter Maydell
2017-11-13 13:05 ` Peter Maydell
2017-11-20 8:53 ` Christoffer Dall
2017-11-20 8:53 ` Christoffer Dall
2017-11-13 16:14 ` Andrew Jones
2017-11-13 16:14 ` Andrew Jones
2017-11-13 17:56 ` Peter Maydell
2017-11-13 17:56 ` Peter Maydell
2017-11-14 16:11 ` James Morse
2017-11-14 16:11 ` James Morse
2017-11-15 9:59 ` gengdongjiu
2017-11-15 9:59 ` gengdongjiu
2017-11-14 16:03 ` James Morse
2017-11-14 16:03 ` James Morse
2017-11-15 9:15 ` gengdongjiu
2017-11-15 9:15 ` gengdongjiu
2017-11-15 18:25 ` James Morse
2017-11-15 18:25 ` James Morse
2017-11-21 11:31 ` gengdongjiu
2017-11-21 11:31 ` gengdongjiu
2017-11-20 8:55 ` Christoffer Dall
2017-11-20 8:55 ` Christoffer Dall
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