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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-11-16 15:02:33 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-11-16 15:02:33 -0800 |
| commit | a5698b3835f5990deef30fa5397cae563af3c68a (patch) | |
| tree | 9403cbfd38c1e73589d8e4e35d2c837ed4340e93 | |
| parent | a08f4523243c86fe35dec8c81c5ec50f721004ce (diff) | |
| parent | 92e4dc8b05663d6539b1b8375f3b1cf7b204cfe9 (diff) | |
Merge tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V fix from Wei Liu:
"One patch from Chris to fix kexec on Hyper-V"
* tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
Drivers: hv: vmbus: Allow cleanup of VMBUS_CONNECT_CPU if disconnected
| -rw-r--r-- | drivers/hv/hv.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c index 0cde10fe0e71..f202ac7f4b3d 100644 --- a/drivers/hv/hv.c +++ b/drivers/hv/hv.c @@ -244,9 +244,13 @@ int hv_synic_cleanup(unsigned int cpu) /* * Hyper-V does not provide a way to change the connect CPU once - * it is set; we must prevent the connect CPU from going offline. + * it is set; we must prevent the connect CPU from going offline + * while the VM is running normally. But in the panic or kexec() + * path where the vmbus is already disconnected, the CPU must be + * allowed to shut down. */ - if (cpu == VMBUS_CONNECT_CPU) + if (cpu == VMBUS_CONNECT_CPU && + vmbus_connection.conn_state == CONNECTED) return -EBUSY; /* |