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| author | Alejandro Jimenez | 2020-12-11 23:31:52 +0100 |
|---|---|---|
| committer | Paolo Bonzini | 2020-12-15 18:51:58 +0100 |
| commit | c753e8e72548493d2a110c0482c4a987a733b033 (patch) | |
| tree | c8830e44baac83400639be1e8ea4bfbd39d91f7b /qemu-options.hx | |
| parent | vl: Add an -action option specifying response to guest events (diff) | |
| download | qemu-c753e8e72548493d2a110c0482c4a987a733b033.tar.gz qemu-c753e8e72548493d2a110c0482c4a987a733b033.tar.xz qemu-c753e8e72548493d2a110c0482c4a987a733b033.zip | |
vl: Add option to avoid stopping VM upon guest panic
The current default action of pausing a guest after a panic event
is received leaves the responsibility to resume guest execution to the
management layer. The reasons for this behavior are discussed here:
https://lore.kernel.org/qemu-devel/52148F88.5000509@redhat.com/
However, in instances like the case of older guests (Linux and
Windows) using a pvpanic device but missing support for the
PVPANIC_CRASHLOADED event, and Windows guests using the hv-crash
enlightenment, it is desirable to allow the guests to continue
running after sending a PVPANIC_PANICKED event. This allows such
guests to proceed to capture a crash dump and automatically reboot
without intervention of a management layer.
Add an option to avoid stopping a VM after a panic event is received,
by passing:
-action panic=none
in the command line arguments, or during runtime by using an upcoming
QMP command.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Message-Id: <1607705564-26264-3-git-send-email-alejandro.j.jimenez@oracle.com>
[Do not fix panic action in the variable, instead modify -no-shutdown. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index eb55cd0eea..94cdfcf32e 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -3899,6 +3899,8 @@ DEF("action", HAS_ARG, QEMU_OPTION_action, " action when guest reboots [default=none]\n" "-action shutdown=poweroff|pause\n" " action when guest shuts down [default=poweroff]\n" + "-action panic=poweroff|pause|none\n" + " action when guest panics [default=poweroff]\n" "-action watchdog=reset|shutdown|poweroff|inject-nmi|pause|debug|none\n" " action when watchdog fires [default=reset]\n", QEMU_ARCH_ALL) @@ -3911,6 +3913,7 @@ SRST Examples: + ``-action panic=none`` ``-action reboot=shutdown,shutdown=pause`` ``-watchdog i6300esb -action watchdog=pause`` |