mshv: Get the vmm capabilities offered by the hypervisor

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Some hypervisor APIs are gated by feature bits in the
"vmm capabilities" partition property. Store the capabilities on
mshv_root module init, using HVCALL_GET_PARTITION_PROPERTY_EX.

This is not supported on all hypervisors. In that case, just set the
capabilities to 0 and proceed as normal.

Signed-off-by: Purna Pavan Chandra Aekkaladevi <paekkaladevi@linux.microsoft.com>
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Reviewed-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Reviewed-by: Easwar Hariharan <easwar.hariharan@linux.microsoft.com>
Reviewed-by: Tianyu Lan <tiala@microsoft.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>

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Purna Pavan Chandra Aekkaladevi 2025-10-10 14:55:49 -07:00 • committed by Wei Liu

parent 59aeea1959

commit fd612d97a4

2 changed files with 19 additions and 0 deletions

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1

drivers/hv/mshv_root.h

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18

drivers/hv/mshv_root_main.c

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