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authorTianyu Lan <Tianyu.Lan@microsoft.com>2021-10-25 15:21:12 +0300
committerWei Liu <wei.liu@kernel.org>2021-10-28 14:22:49 +0300
commit20c89a559e00dfe352b73e867211a669113ae881 (patch)
tree502dc12927915b48b4d5321afe4272104c68735b /include/asm-generic
parentfaff44069ff538ccdfef187c4d7ec83d22dfb3a4 (diff)
downloadlinux-20c89a559e00dfe352b73e867211a669113ae881.tar.xz
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.h1
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 */