diff options
Diffstat (limited to 'arch/x86/boot/compressed/sev.h')
| -rw-r--r-- | arch/x86/boot/compressed/sev.h | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/arch/x86/boot/compressed/sev.h b/arch/x86/boot/compressed/sev.h index d3900384b8ab..92f79c21939c 100644 --- a/arch/x86/boot/compressed/sev.h +++ b/arch/x86/boot/compressed/sev.h @@ -10,14 +10,31 @@ #ifdef CONFIG_AMD_MEM_ENCRYPT -bool sev_snp_enabled(void); +#include "../msr.h" + void snp_accept_memory(phys_addr_t start, phys_addr_t end); u64 sev_get_status(void); bool early_is_sevsnp_guest(void); +static inline u64 sev_es_rd_ghcb_msr(void) +{ + struct msr m; + + boot_rdmsr(MSR_AMD64_SEV_ES_GHCB, &m); + + return m.q; +} + +static inline void sev_es_wr_ghcb_msr(u64 val) +{ + struct msr m; + + m.q = val; + boot_wrmsr(MSR_AMD64_SEV_ES_GHCB, &m); +} + #else -static inline bool sev_snp_enabled(void) { return false; } static inline void snp_accept_memory(phys_addr_t start, phys_addr_t end) { } static inline u64 sev_get_status(void) { return 0; } static inline bool early_is_sevsnp_guest(void) { return false; } |