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Re: [PATCH v3 0/3] add MEMORY_FAILURE event
From: |
Paolo Bonzini |
Subject: |
Re: [PATCH v3 0/3] add MEMORY_FAILURE event |
Date: |
Thu, 1 Oct 2020 19:28:00 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 |
On 30/09/20 12:04, zhenwei pi wrote:
> v2->v3:
> Use g_strdup_printf instead of snprintf.
> Declear memory failure event as 3 parts: 'recipient', 'action', 'flags'.
> Wrapper function emit_guest_memory_failure&emit_hypervisor_memory_failure.
Queued, thanks. I took the liberty of adding a fourth value to
MemoryFailureAction, "reset", since "fatal" was used for two different
actions.
Paolo
> v1->v2:
> Suggested by Peter Maydell, rename events to make them
> architecture-neutral:
> 'PC-RAM' -> 'guest-memory'
> 'guest-triple-fault' -> 'guest-mce-fatal'
>
> Suggested by Paolo, add more fields in event:
> 'action-required': boolean type to distinguish a guest-mce is AR/AO.
> 'recursive': boolean type. set true if: previous MCE in processing
> in guest, another AO MCE occurs.
>
> v1:
> Although QEMU could catch signal BUS to handle hardware memory
> corrupted event, sadly, QEMU just prints a little log and try to fix
> it silently.
>
> In these patches, introduce a 'MEMORY_FAILURE' event with 4 detailed
> actions of QEMU, then uplayer could know what situaction QEMU hit and
> did. And further step we can do: if a host server hits a 'hypervisor-ignore'
> or 'guest-mce', scheduler could migrate VM to another host; if hitting
> 'hypervisor-stop' or 'guest-triple-fault', scheduler could select other
> healthy servers to launch VM.
>
> Zhenwei Pi (3):
> target-i386: seperate MCIP & MCE_MASK error reason
> qapi/run-state.json: introduce memory failure event
> target-i386: post memory failure event to uplayer
>
> qapi/run-state.json | 85
> ++++++++++++++++++++++++++++++++++++++++++++++++++++
> target/i386/helper.c | 47 ++++++++++++++++++++++-------
> target/i386/kvm.c | 13 +++++++-
> 3 files changed, 134 insertions(+), 11 deletions(-)
>
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