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authorTianyu Lan2021-10-25 08:21:06 -0400
committerWei Liu2021-10-28 10:47:52 +0000
commit0cc4f6d9f0b9f20f3f1e1149bdb6737c0b4e134a (patch)
tree6b38683b18f98bd2a5950149d5d2d29793833cdb /include
parente82f2069b52fb350f4ea568957dcc5c9f3649999 (diff)
x86/hyperv: Initialize GHCB page in Isolation VM
Hyperv exposes GHCB page via SEV ES GHCB MSR for SNP guest to communicate with hypervisor. Map GHCB page for all cpus to read/write MSR register and submit hvcall request via ghcb page. Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Link: https://lore.kernel.org/r/20211025122116.264793-2-ltykernel@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'include')
-rw-r--r--include/asm-generic/mshyperv.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index d3eae6cdbacb..2d88aa855f7e 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -254,12 +254,18 @@ bool hv_is_hyperv_initialized(void);
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);
void hyperv_cleanup(void);
bool hv_query_ext_cap(u64 cap_query);
#else /* CONFIG_HYPERV */
static inline bool hv_is_hyperv_initialized(void) { return false; }
static inline bool hv_is_hibernation_supported(void) { return false; }
static inline void hyperv_cleanup(void) {}
+static inline bool hv_is_isolation_supported(void) { return false; }
+static inline enum hv_isolation_type hv_get_isolation_type(void)
+{
+ return HV_ISOLATION_TYPE_NONE;
+}
#endif /* CONFIG_HYPERV */
#endif