diff options
| author | Tianyu Lan <Tianyu.Lan@microsoft.com> | 2021-10-25 14:21:12 +0200 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2021-10-28 13:22:49 +0200 |
| commit | 20c89a559e00dfe352b73e867211a669113ae881 (patch) | |
| tree | 502dc12927915b48b4d5321afe4272104c68735b /include/asm-generic | |
| parent | x86/hyperv: Add Write/Read MSR registers via ghcb page (diff) | |
| download | linux-20c89a559e00dfe352b73e867211a669113ae881.tar.xz linux-20c89a559e00dfe352b73e867211a669113ae881.zip | |
x86/hyperv: Add ghcb hvcall support for SNP VM
hyperv provides ghcb hvcall to handle VMBus
HVCALL_SIGNAL_EVENT and HVCALL_POST_MESSAGE
msg in SNP Isolation VM. Add such support.
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com>
Link: https://lore.kernel.org/r/20211025122116.264793-8-ltykernel@gmail.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 6d3ba902ebb0..3e2248ac328e 100644 --- a/include/asm-generic/mshyperv.h +++ b/include/asm-generic/mshyperv.h @@ -266,6 +266,7 @@ bool hv_is_hibernation_supported(void); enum hv_isolation_type hv_get_isolation_type(void); bool hv_is_isolation_supported(void); bool hv_isolation_type_snp(void); +u64 hv_ghcb_hypercall(u64 control, void *input, void *output, u32 input_size); void hyperv_cleanup(void); bool hv_query_ext_cap(u64 cap_query); #else /* CONFIG_HYPERV */ |