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Subject[PATCH V3 0/6] x86/Hyper-V: Panic code path fixes
From: Tianyu Lan <>

This patchset fixes some issues in the Hyper-V panic code path.
Patch 1 resolves issue that panic system still responses network
Patch 2-3,5-6 resolves crash enlightenment issues.
Patch 4 is to set crash_kexec_post_notifiers to true for Hyper-V
VM in order to report crash data or kmsg to host before running
kdump kernel.

Tianyu Lan (6):
x86/Hyper-V: Unload vmbus channel in hv panic callback
x86/Hyper-V: Free hv_panic_page when fail to register kmsg dump
x86/Hyper-V: Trigger crash enlightenment only once during system
x86/Hyper-V: Report crash register data or ksmg before running crash
x86/Hyper-V: Report crash register data when sysctl_record_panic_msg
is not set
x86/Hyper-V: Report crash data in die() when panic_on_oops is set

arch/x86/kernel/cpu/mshyperv.c | 10 +++++++
drivers/hv/channel_mgmt.c | 3 +++
drivers/hv/vmbus_drv.c | 61 +++++++++++++++++++++++++++++-------------
3 files changed, 56 insertions(+), 18 deletions(-)


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