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| author | Denis V. Lunev <den@openvz.org> | 2015-08-02 01:08:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-08-05 07:30:44 +0200 |
| commit | cc2dd4027a43bb36c846f195a764edabc0828602 (patch) | |
| tree | 5e7d1fc796c9a11c6dd79645d3b06a6ae327b7ed /drivers/hv | |
| parent | Drivers: hv: vmbus: don't send CHANNELMSG_UNLOAD on pre-Win2012R2 hosts (diff) | |
| download | linux-cc2dd4027a43bb36c846f195a764edabc0828602.tar.xz linux-cc2dd4027a43bb36c846f195a764edabc0828602.zip | |
mshyperv: fix recognition of Hyper-V guest crash MSR's
Hypervisor Top Level Functional Specification v3.1/4.0 notes that cpuid
(0x40000003) EDX's 10th bit should be used to check that Hyper-V guest
crash MSR's functionality available.
This patch should fix this recognition. Currently the code checks EAX
register instead of EDX.
Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index b6114cc89aeb..e7b0bcd453e7 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -871,7 +871,7 @@ static int vmbus_bus_init(int irq) /* * Only register if the crash MSRs are available */ - if (ms_hyperv.features & HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE) { + if (ms_hyperv.misc_features & HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE) { register_die_notifier(&hyperv_die_block); atomic_notifier_chain_register(&panic_notifier_list, &hyperv_panic_block); @@ -1169,7 +1169,7 @@ static void __exit vmbus_exit(void) hv_remove_vmbus_irq(); tasklet_kill(&msg_dpc); vmbus_free_channels(); - if (ms_hyperv.features & HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE) { + if (ms_hyperv.misc_features & HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE) { unregister_die_notifier(&hyperv_die_block); atomic_notifier_chain_unregister(&panic_notifier_list, &hyperv_panic_block); |