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Re: [PATCH v24 00/10] Add ARMv8 RAS virtualization support in QEMU
From: |
Igor Mammedov |
Subject: |
Re: [PATCH v24 00/10] Add ARMv8 RAS virtualization support in QEMU |
Date: |
Tue, 25 Feb 2020 17:59:18 +0100 |
On Mon, 24 Feb 2020 16:37:44 +0800
gengdongjiu <address@hidden> wrote:
> On 2020/2/21 22:09, Peter Maydell wrote:
> > On Mon, 17 Feb 2020 at 13:10, Dongjiu Geng <address@hidden> 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.
> >
> > Hi; I have reviewed the remaining arm bit of this series (patch 9),
> > and made some comments on patch 1. Still to be reviewed are
> > patches 4, 5, 6, 8: I'm going to assume that Michael or Igor
> > will look at those.
>
> Thanks very much for Peter's review.
> Michael/Igor, hope you can review patches 4, 5, 6, 8, thank you very much in
> advance.
done
> >
> > thanks
> > -- PMM
> >
> > .
> >
>
- [PATCH v24 03/10] docs: APEI GHES generation and CPER record description, (continued)
- [PATCH v24 03/10] docs: APEI GHES generation and CPER record description, Dongjiu Geng, 2020/02/17
- [PATCH v24 08/10] ACPI: Record Generic Error Status Block(GESB) table, Dongjiu Geng, 2020/02/17
- [PATCH v24 06/10] ACPI: Record the Generic Error Status Block address, Dongjiu Geng, 2020/02/17
- [PATCH v24 10/10] MAINTAINERS: Add ACPI/HEST/GHES entries, Dongjiu Geng, 2020/02/17
- [PATCH v24 09/10] target-arm: kvm64: handle SIGBUS signal from kernel or KVM, Dongjiu Geng, 2020/02/17
- Re: [PATCH v24 00/10] Add ARMv8 RAS virtualization support in QEMU, Peter Maydell, 2020/02/21