On 5/5/25 1:25 PM, Andrew Donnellan wrote:
On Wed, 2025-04-30 at 14:33 +0530, Srish Srinivasan wrote:
On PLPKS enabled PowerVM LPAR, there is no provision to load signed
third-party kernel modules when the key management mode is static.
This
is because keys from secure boot secvars are only loaded when the key
management mode is dynamic.
Allow loading of the trustedcadb and moduledb keys even in the static
key management mode, where the secvar format string takes the form
"ibm,plpks-sb-v0".
Signed-off-by: Srish Srinivasan <ssr...@linux.ibm.com>
Reviewed-by: Mimi Zohar <zo...@linux.ibm.com>
Reviewed-by: Stefan Berger <stef...@linux.ibm.com>
Reviewed-by: Andrew Donnellan <a...@linux.ibm.com>
Hi Andrew,
Thanks a lot for the review.
Thanks and Regards,
Srish
---
security/integrity/platform_certs/load_powerpc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/security/integrity/platform_certs/load_powerpc.c
b/security/integrity/platform_certs/load_powerpc.c
index c85febca3343..714c961a00f5 100644
--- a/security/integrity/platform_certs/load_powerpc.c
+++ b/security/integrity/platform_certs/load_powerpc.c
@@ -75,12 +75,13 @@ static int __init load_powerpc_certs(void)
return -ENODEV;
// Check for known secure boot implementations from OPAL or
PLPKS
- if (strcmp("ibm,edk2-compat-v1", buf) && strcmp("ibm,plpks-
sb-v1", buf)) {
+ if (strcmp("ibm,edk2-compat-v1", buf) && strcmp("ibm,plpks-
sb-v1", buf) &&
+ strcmp("ibm,plpks-sb-v0", buf)) {
pr_err("Unsupported secvar implementation \"%s\",
not loading certs\n", buf);
return -ENODEV;
}
- if (strcmp("ibm,plpks-sb-v1", buf) == 0)
+ if (strcmp("ibm,plpks-sb-v1", buf) == 0 ||
strcmp("ibm,plpks-sb-v0", buf) == 0)
/* PLPKS authenticated variables ESL data is
prefixed with 8 bytes of timestamp */
offset = 8;
