From: gengdongjiu <gengdj.1984@gmail.com>
To: gengdongjiu <gengdongjiu@huawei.com>
Cc: James Morse <james.morse@arm.com>,
wangkefeng.wang@huawei.com, kvm@vger.kernel.org,
david.daney@cavium.com, catalin.marinas@arm.com,
Achin Gupta <Achin.Gupta@arm.com>,
Tyler Baicar <tbaicar@codeaurora.org>,
will.deacon@arm.com, linuxarm@huawei.com, robert.moore@intel.com,
lv.zheng@intel.com, zjzhang@codeaurora.org, mingo@kernel.org,
stefan@hello-penguin.com, linux@armlinux.org.uk,
kvmarm@lists.cs.columbia.edu, linux-acpi@vger.kernel.org,
Huangshaoyu <huangshaoyu@huawei.com>,
huangdaode@hisilicon.com, Borislav Petkov <bp@suse.de>,
Dave.Martin@arm.com, Len Brown <lenb@kernel.org>,
wuquanming <wuquanming@huawei.com>,
Marc Zyngier <marc.zyngier@arm.com>,
John Garry <john.garry@huawei.com>,
kristina.martsenko@arm.com, cov@codeaurora.org,
jonathan.cameron@huawei.com, zhengqiang10@huawei.com,
arm-mail-list <linux-arm-kernel@lists.infradead.org>,
devel@acpica.org, Ard Biesheuvel <ard.biesheuvel@linaro.org>,
linux-kernel@vger.kernel.org, wangzhou1@hisilicon.com,
mst@redhat.com, Shiju Jose <shiju.jose@huawei.com>
Subject: Re: [PATCH v6 6/7] KVM: arm64: allow get exception information from userspace
Date: Wed, 27 Sep 2017 23:37:18 +0800 [thread overview]
Message-ID: <CAMj-D2AuCqAgQBRAp2CSf24HsHWteNLigZAUEKK8oKL_SAmBNw@mail.gmail.com> (raw)
In-Reply-To: <8be64586-3722-cd96-80fd-6e815d2e911d@huawei.com>
>> What you may be seeing is some awkwardness with the change in the SError ESR
>> with v8.2. Previously the VSE mechanism injected an impdef SError, (but they
>> were all impdef so it didn't matter).
>> With VSESR_EL2 KVM has to specify one, and all-zeros is a bad choice as this
>> means 'classified as a RAS error ... unknown!'.
>>
>> I have a patch in the upcoming SError/RAS series that changes KVMs virtual-abort
>> code to specify an impdef ESR for this path.
> Before I remember Marc and you suggest me specify the an impdef ESR (set the vsesr_el2) in
> the userspace,
I pasted Marc's propose and your suggestion that set VSESR_EL2(specify
virtual SError syndrome) by the user space.
https://lkml.org/lkml/2017/3/20/441
https://lkml.org/lkml/2017/3/20/516
> now do you want to specify an impdef ESR in KVM instead of usrspace?
> if setting the vsesr_el2 in the KVM, whether user-space need to specify?
> May be we can combine the patches that specify an impdef ESR(set vsesr_el2) patch to one.
>
next prev parent reply other threads:[~2017-09-27 15:37 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-28 10:38 [PATCH v6 0/7] Add RAS virtualization support for SEA/SEI notification type in KVM Dongjiu Geng
2017-08-28 10:38 ` [PATCH v6 1/7] arm64: cpufeature: Detect CPU RAS Extentions Dongjiu Geng
2017-08-31 17:44 ` James Morse
2017-09-04 11:20 ` gengdongjiu
2017-08-28 10:38 ` [PATCH v6 2/7] KVM: arm64: Save ESR_EL2 on guest SError Dongjiu Geng
2017-08-28 10:38 ` [PATCH v6 3/7] acpi: apei: remove the unused code Dongjiu Geng
2017-08-31 17:50 ` James Morse
2017-09-04 11:43 ` gengdongjiu
2017-09-08 18:17 ` James Morse
2017-09-11 12:04 ` gengdongjiu
2017-09-14 12:35 ` James Morse
2017-09-14 12:51 ` gengdongjiu
2017-08-28 10:38 ` [PATCH v6 4/7] arm64: kvm: support user space to query RAS extension feature Dongjiu Geng
2017-08-31 18:04 ` James Morse
2017-09-05 7:18 ` gengdongjiu
2017-09-07 16:31 ` James Morse
2017-08-28 10:38 ` [PATCH v6 5/7] arm64: kvm: route synchronous external abort exceptions to el2 Dongjiu Geng
2017-09-07 16:31 ` James Morse
2017-09-13 8:12 ` gengdongjiu
2017-09-14 11:12 ` gengdongjiu
2017-09-14 12:36 ` James Morse
2017-10-16 11:44 ` James Morse
2017-10-16 13:44 ` gengdongjiu
2017-08-28 10:38 ` [PATCH v6 6/7] KVM: arm64: allow get exception information from userspace Dongjiu Geng
2017-09-07 16:30 ` James Morse
2017-09-13 7:32 ` gengdongjiu
2017-09-14 13:00 ` James Morse
2017-09-18 13:36 ` gengdongjiu
2017-09-22 16:39 ` James Morse
2017-09-21 7:55 ` gengdongjiu
2017-09-22 16:51 ` James Morse
2017-09-27 11:07 ` gengdongjiu
2017-09-27 15:37 ` gengdongjiu [this message]
2017-10-06 17:31 ` James Morse
2017-10-19 7:49 ` gengdongjiu
2017-08-28 10:38 ` [PATCH v6 7/7] arm64: kvm: handle SEI notification and pass the virtual syndrome Dongjiu Geng
2017-08-31 17:43 ` [PATCH v6 0/7] Add RAS virtualization support for SEA/SEI notification type in KVM James Morse
2017-09-04 11:10 ` gengdongjiu
2017-09-07 16:32 ` James Morse
2017-09-06 11:19 ` Peter Maydell
2017-09-06 11:29 ` gengdongjiu
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