x86/hyperv: Add support for detecting nested hypervisor

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Detect if Linux is running as a nested hypervisor in the root
partition for Microsoft Hypervisor, using flags provided by MSHV.
Expose a new variable hv_nested that is used later for decisions
specific to the nested use case.

Signed-off-by: Jinank Jain <jinankjain@linux.microsoft.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/8e3e7112806e81d2292a66a56fe547162754ecea.1672639707.git.jinankjain@linux.microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>

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Jinank Jain 2023-01-02 07:12:51 +00:00 • committed by Wei Liu

parent b7bfaa761d

commit c4bdf94f97

4 changed files with 17 additions and 3 deletions

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include/asm-generic/mshyperv.h

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