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[PATCHv2 0/2] log guest name and memory error type AO, AR for MCEs
From: |
Mario Smarduch |
Subject: |
[PATCHv2 0/2] log guest name and memory error type AO, AR for MCEs |
Date: |
Wed, 9 Oct 2019 09:44:57 -0700 |
In a large VPC environment we want to log memory error occurrences
and log them with guest name and type - there are few use cases
- if VM crashes on AR mce inform the user about the reason and resolve the case
- if VM hangs notify the user to reboot and resume processing
- if VM continues to run let the user know, he/she maybe able to correlate
to vm internal outage
- Rawhammer attacks - isolate/determine the attacker possible migrating it off
the hypervisor
- In general track memory errors on a hyperviosr over time to determine trends
Monitoring our fleet we come across quite a few of these and been
able to take action where before there were no clues to the causes.
When memory error occurs we get a log entry in qemu log:
Guest [Droplet-12345678] 2019-08-02T05:00:11.940270Z qemu-system-x86_64:
Guest MCE Memory Error at QEMU addr 0x7f3c7622f000 and GUEST 0x78e42f000
addr of type BUS_MCEERR_AR injected
with enterprise logging environment we can to take further actions.
v1 -> v2:
- split into two patches one to get the gustname second to log MCEs
- addressed comments for MCE logging
Mario Smarduch (2):
util/qemu-error: add guest name helper with -msg options
target/i386: log MCE guest and host addresses
include/qemu/error-report.h | 1 +
qemu-options.hx | 10 ++++++----
target/i386/kvm.c | 29 ++++++++++++++++++++++++-----
util/qemu-error.c | 31 +++++++++++++++++++++++++++++++
vl.c | 5 +++++
5 files changed, 67 insertions(+), 9 deletions(-)
--
2.9.3
- [PATCHv2 0/2] log guest name and memory error type AO, AR for MCEs,
Mario Smarduch <=
- [PATCHv2 1/2] util/qemu-error: add guest name helper with -msg options, Mario Smarduch, 2019/10/09
- [PATCHv2 2/2] target/i386: log MCE guest and host addresses, Mario Smarduch, 2019/10/09
- Re: [PATCHv2 0/2] log guest name and memory error type AO, AR for MCEs, Paolo Bonzini, 2019/10/09
- Re: [PATCHv2 0/2] log guest name and memory error type AO, AR for MCEs, no-reply, 2019/10/09