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| author | Jinank Jain <jinankjain@linux.microsoft.com> | 2023-01-02 08:12:51 +0100 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2023-01-12 16:23:26 +0100 |
| commit | c4bdf94f97c86bdee8bacc87f8f85dc67866c928 (patch) | |
| tree | 0fb80013913a5eb1966a31e39e7771120cdcb7e9 /include/asm-generic | |
| parent | Linux 6.2-rc3 (diff) | |
| download | linux-c4bdf94f97c86bdee8bacc87f8f85dc67866c928.tar.xz linux-c4bdf94f97c86bdee8bacc87f8f85dc67866c928.zip | |
x86/hyperv: Add support for detecting nested hypervisor
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>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/mshyperv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h index d55d2833a37b..8845a2eca339 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -48,6 +48,7 @@ struct ms_hyperv_info { u64 shared_gpa_boundary; }; extern struct ms_hyperv_info ms_hyperv; +extern bool hv_nested; extern void * __percpu *hyperv_pcpu_input_arg; extern void * __percpu *hyperv_pcpu_output_arg; |