On 10/28/21 12:57 PM, Peter Gonda wrote:
This change moves the data corrupted retry of SEV_INIT into the
__sev_platform_init_locked() function. This is for upcoming INIT_EX
support as well as helping direct callers of
__sev_platform_init_locked() which currently do not support the
retry.
Signed-off-by: Peter Gonda <pgonda@xxxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
Cc: Brijesh Singh <brijesh.singh@xxxxxxx>
Cc: Marc Orr <marcorr@xxxxxxxxxx>
Cc: Joerg Roedel <jroedel@xxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: John Allen <john.allen@xxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> (
Cc: linux-crypto@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Acked-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
---
drivers/crypto/ccp/sev-dev.c | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c
index ec89a82ba267..e4bc833949a0 100644
--- a/drivers/crypto/ccp/sev-dev.c
+++ b/drivers/crypto/ccp/sev-dev.c
@@ -267,6 +267,18 @@ static int __sev_platform_init_locked(int *error)
}
rc = __sev_do_cmd_locked(SEV_CMD_INIT, &data, error);
+ if (rc && *error == SEV_RET_SECURE_DATA_INVALID) {
+ /*
+ * INIT command returned an integrity check failure
+ * status code, meaning that firmware load and
+ * validation of SEV related persistent data has
+ * failed and persistent state has been erased.
+ * Retrying INIT command here should succeed.
+ */
+ dev_dbg(sev->dev, "SEV: retrying INIT command");
+ rc = __sev_do_cmd_locked(SEV_CMD_INIT, &data, error);
+ }
+
if (rc)
return rc;
@@ -1091,18 +1103,6 @@ void sev_pci_init(void)
/* Initialize the platform */
rc = sev_platform_init(&error);
- if (rc && (error == SEV_RET_SECURE_DATA_INVALID)) {
- /*
- * INIT command returned an integrity check failure
- * status code, meaning that firmware load and
- * validation of SEV related persistent data has
- * failed and persistent state has been erased.
- * Retrying INIT command here should succeed.
- */
- dev_dbg(sev->dev, "SEV: retrying INIT command");
- rc = sev_platform_init(&error);
- }
-
if (rc) {
dev_err(sev->dev, "SEV: failed to INIT error %#x, rc %d\n",
error, rc);
