diff options
Diffstat (limited to 'include/linux/psp-sev.h')
| -rw-r--r-- | include/linux/psp-sev.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index e0dbcb4b4fd9..abcdee256c65 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -14,6 +14,39 @@ #include <uapi/linux/psp-sev.h> +/* As defined by SEV API, under "Guest Policy". */ +#define SEV_POLICY_MASK_NODBG BIT(0) +#define SEV_POLICY_MASK_NOKS BIT(1) +#define SEV_POLICY_MASK_ES BIT(2) +#define SEV_POLICY_MASK_NOSEND BIT(3) +#define SEV_POLICY_MASK_DOMAIN BIT(4) +#define SEV_POLICY_MASK_SEV BIT(5) +#define SEV_POLICY_MASK_API_MAJOR GENMASK(23, 16) +#define SEV_POLICY_MASK_API_MINOR GENMASK(31, 24) + +/* As defined by SEV-SNP Firmware ABI, under "Guest Policy". */ +#define SNP_POLICY_MASK_API_MINOR GENMASK_ULL(7, 0) +#define SNP_POLICY_MASK_API_MAJOR GENMASK_ULL(15, 8) +#define SNP_POLICY_MASK_SMT BIT_ULL(16) +#define SNP_POLICY_MASK_RSVD_MBO BIT_ULL(17) +#define SNP_POLICY_MASK_MIGRATE_MA BIT_ULL(18) +#define SNP_POLICY_MASK_DEBUG BIT_ULL(19) +#define SNP_POLICY_MASK_SINGLE_SOCKET BIT_ULL(20) +#define SNP_POLICY_MASK_CXL_ALLOW BIT_ULL(21) +#define SNP_POLICY_MASK_MEM_AES_256_XTS BIT_ULL(22) +#define SNP_POLICY_MASK_RAPL_DIS BIT_ULL(23) +#define SNP_POLICY_MASK_CIPHERTEXT_HIDING_DRAM BIT_ULL(24) +#define SNP_POLICY_MASK_PAGE_SWAP_DISABLE BIT_ULL(25) + +/* Base SEV-SNP policy bitmask for minimum supported SEV firmware version */ +#define SNP_POLICY_MASK_BASE (SNP_POLICY_MASK_API_MINOR | \ + SNP_POLICY_MASK_API_MAJOR | \ + SNP_POLICY_MASK_SMT | \ + SNP_POLICY_MASK_RSVD_MBO | \ + SNP_POLICY_MASK_MIGRATE_MA | \ + SNP_POLICY_MASK_DEBUG | \ + SNP_POLICY_MASK_SINGLE_SOCKET) + #define SEV_FW_BLOB_MAX_SIZE 0x4000 /* 16KB */ /** @@ -849,7 +882,10 @@ struct snp_feature_info { u32 edx; } __packed; +#define SNP_RAPL_DISABLE_SUPPORTED BIT(2) #define SNP_CIPHER_TEXT_HIDING_SUPPORTED BIT(3) +#define SNP_AES_256_XTS_POLICY_SUPPORTED BIT(4) +#define SNP_CXL_ALLOW_POLICY_SUPPORTED BIT(5) #ifdef CONFIG_CRYPTO_DEV_SP_PSP @@ -995,6 +1031,7 @@ void *snp_alloc_firmware_page(gfp_t mask); void snp_free_firmware_page(void *addr); void sev_platform_shutdown(void); bool sev_is_snp_ciphertext_hiding_supported(void); +u64 sev_get_snp_policy_bits(void); #else /* !CONFIG_CRYPTO_DEV_SP_PSP */ |