sev: use explicit indices for mapping firmware error codes to strings

This can help lower any margin for error when making future additions to
the list, especially if they're made out of order.

While doing so, make capitalization of ASID consistent with its usage in
the SEV firmware spec (Asid -> ASID).

Signed-off-by: Connor Kuehl <ckuehl@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210430134830.254741-2-ckuehl@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

diff --git a/target/i386/sev.c b/target/i386/sev.c
index 1a88f12..5467407 100644 (file)
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -87,29 +87,29 @@ static SevGuestState *sev_guest;
 static Error *sev_mig_blocker;
 
 static const char *const sev_fw_errlist[] = {
-    "",
-    "Platform state is invalid",
-    "Guest state is invalid",
-    "Platform configuration is invalid",
-    "Buffer too small",
-    "Platform is already owned",
-    "Certificate is invalid",
-    "Policy is not allowed",
-    "Guest is not active",
-    "Invalid address",
-    "Bad signature",
-    "Bad measurement",
-    "Asid is already owned",
-    "Invalid ASID",
-    "WBINVD is required",
-    "DF_FLUSH is required",
-    "Guest handle is invalid",
-    "Invalid command",
-    "Guest is active",
-    "Hardware error",
-    "Hardware unsafe",
-    "Feature not supported",
-    "Invalid parameter"
+    [SEV_RET_SUCCESS]                = "",
+    [SEV_RET_INVALID_PLATFORM_STATE] = "Platform state is invalid",
+    [SEV_RET_INVALID_GUEST_STATE]    = "Guest state is invalid",
+    [SEV_RET_INAVLID_CONFIG]         = "Platform configuration is invalid",
+    [SEV_RET_INVALID_LEN]            = "Buffer too small",
+    [SEV_RET_ALREADY_OWNED]          = "Platform is already owned",
+    [SEV_RET_INVALID_CERTIFICATE]    = "Certificate is invalid",
+    [SEV_RET_POLICY_FAILURE]         = "Policy is not allowed",
+    [SEV_RET_INACTIVE]               = "Guest is not active",
+    [SEV_RET_INVALID_ADDRESS]        = "Invalid address",
+    [SEV_RET_BAD_SIGNATURE]          = "Bad signature",
+    [SEV_RET_BAD_MEASUREMENT]        = "Bad measurement",
+    [SEV_RET_ASID_OWNED]             = "ASID is already owned",
+    [SEV_RET_INVALID_ASID]           = "Invalid ASID",
+    [SEV_RET_WBINVD_REQUIRED]        = "WBINVD is required",
+    [SEV_RET_DFFLUSH_REQUIRED]       = "DF_FLUSH is required",
+    [SEV_RET_INVALID_GUEST]          = "Guest handle is invalid",
+    [SEV_RET_INVALID_COMMAND]        = "Invalid command",
+    [SEV_RET_ACTIVE]                 = "Guest is active",
+    [SEV_RET_HWSEV_RET_PLATFORM]     = "Hardware error",
+    [SEV_RET_HWSEV_RET_UNSAFE]       = "Hardware unsafe",
+    [SEV_RET_UNSUPPORTED]            = "Feature not supported",
+    [SEV_RET_INVALID_PARAM]          = "Invalid parameter",
 };
 
 #define SEV_FW_MAX_ERROR      ARRAY_SIZE(sev_fw_errlist)