From: Peter Maydell <peter.maydell@linaro.org>
To: Dongjiu Geng <gengdongjiu@huawei.com>
Cc: "Igor Mammedov" <imammedo@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Xiao Guangrong" <xiaoguangrong.eric@gmail.com>,
"Shannon Zhao" <shannon.zhaosl@gmail.com>,
"Fam Zheng" <fam@euphon.net>,
"Richard Henderson" <rth@twiddle.net>,
"Eduardo Habkost" <ehabkost@redhat.com>,
"Marcelo Tosatti" <mtosatti@redhat.com>,
"QEMU Developers" <qemu-devel@nongnu.org>,
kvm-devel <kvm@vger.kernel.org>, qemu-arm <qemu-arm@nongnu.org>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"Zheng Xiang" <zhengxiang9@huawei.com>,
"Jonathan Cameron" <Jonathan.Cameron@huawei.com>,
Linuxarm <linuxarm@huawei.com>
Subject: Re: [PATCH v27 00/10] Add ARMv8 RAS virtualization support in QEMU
Date: Thu, 14 May 2020 13:54:54 +0100 [thread overview]
Message-ID: <CAFEAcA-=pVwNXR0mqCBX1MRkzTOzxOFF_caxYSsCbiA_bq4OQA@mail.gmail.com> (raw)
In-Reply-To: <20200512030609.19593-1-gengdongjiu@huawei.com>
On Tue, 12 May 2020 at 04:03, Dongjiu Geng <gengdongjiu@huawei.com> wrote:
>
> In the ARMv8 platform, the CPU error types includes synchronous external abort(SEA)
> and SError Interrupt (SEI). If exception happens in guest, host does not know the detailed
> information of guest, so it is expected that guest can do the recovery. For example, if an
> exception happens in a guest user-space application, host does not know which application
> encounters errors, only guest knows it.
>
> For the ARMv8 SEA/SEI, KVM or host kernel delivers SIGBUS to notify userspace.
> After user space gets the notification, it will record the CPER into guest GHES
> buffer and inject an exception or IRQ to guest.
>
> In the current implementation, if the type of SIGBUS is BUS_MCEERR_AR, we will
> treat it as a synchronous exception, and notify guest with ARMv8 SEA
> notification type after recording CPER into guest.
Applied to target-arm.next, thanks.
-- PMM
prev parent reply other threads:[~2020-05-14 12:55 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-12 3:05 [PATCH v27 00/10] Add ARMv8 RAS virtualization support in QEMU Dongjiu Geng
2020-05-12 3:06 ` [PATCH v27 01/10] acpi: nvdimm: change NVDIMM_UUID_LE to a common macro Dongjiu Geng
2020-05-14 11:11 ` Peter Maydell
2020-05-12 3:06 ` [PATCH v27 02/10] hw/arm/virt: Introduce a RAS machine option Dongjiu Geng
2020-05-12 3:06 ` [PATCH v27 03/10] docs: APEI GHES generation and CPER record description Dongjiu Geng
2020-05-12 3:06 ` [PATCH v27 04/10] ACPI: Build related register address fields via hardware error fw_cfg blob Dongjiu Geng
2020-05-12 3:06 ` [PATCH v27 05/10] ACPI: Build Hardware Error Source Table Dongjiu Geng
2020-05-12 3:06 ` [PATCH v27 06/10] ACPI: Record the Generic Error Status Block address Dongjiu Geng
2020-05-12 3:06 ` [PATCH v27 07/10] KVM: Move hwpoison page related functions into kvm-all.c Dongjiu Geng
2020-05-12 3:06 ` [PATCH v27 08/10] ACPI: Record Generic Error Status Block(GESB) table Dongjiu Geng
2020-05-12 3:06 ` [PATCH v27 09/10] target-arm: kvm64: handle SIGBUS signal from kernel or KVM Dongjiu Geng
2020-05-12 3:06 ` [PATCH v27 10/10] MAINTAINERS: Add ACPI/HEST/GHES entries Dongjiu Geng
2020-05-14 12:54 ` Peter Maydell [this message]
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