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vmbus: Print a warning when enabled without the recommended set of features

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Some Windows versions crash at boot or fail to enable the VMBus device if
they don't see the expected set of Hyper-V features (enlightenments).

Since this provides poor user experience let's warn user if the VMBus
device is enabled without the recommended set of Hyper-V features.

The recommended set is the minimum set of Hyper-V features required to make
the VMBus device work properly in Windows Server versions 2016, 2019 and
2022.

Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
This commit is contained in:
Maciej S. Szmigiero 2024-01-25 15:12:41 +01:00
parent 546987284a
commit 6093637b4d
7 changed files with 40 additions and 0 deletions
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4
include/hw/hyperv/hyperv.h
View file

@ -139,4 +139,8 @@ typedef struct HvSynDbgMsg {
} HvSynDbgMsg;
typedef uint16_t (*HvSynDbgHandler)(void *context, HvSynDbgMsg *msg);
void hyperv_set_syndbg_handler(HvSynDbgHandler handler, void *context);
bool hyperv_are_vmbus_recommended_features_enabled(void);
void hyperv_set_vmbus_recommended_features_enabled(void);
#endif