plpks_is_available() can be called on any platform via kexec but calls
_plpks_get_config() which makes a hcall, which will only work on pseries.
Fix this by returning early in plpks_is_available() if hcalls aren't
possible.
Fixes: 119da30d037d ("powerpc/pseries: Expose PLPKS config values, support
additional fields")
Reported-by: Murphy Zhou <jencce.ker...@gmail.com>
Signed-off-by: Russell Currey <rus...@russell.cc>
---
arch/powerpc/platforms/pseries/plpks.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/plpks.c
b/arch/powerpc/platforms/pseries/plpks.c
index cdf09e5bd741..6f7bf3fc3aea 100644
--- a/arch/powerpc/platforms/pseries/plpks.c
+++ b/arch/powerpc/platforms/pseries/plpks.c
@@ -22,6 +22,7 @@
#include <asm/hvcall.h>
#include <asm/machdep.h>
#include <asm/plpks.h>
+#include <asm/firmware.h>
static u8 *ospassword;
static u16 ospasswordlength;
@@ -377,6 +378,9 @@ bool plpks_is_available(void)
{
int rc;
+ if (!firmware_has_feature(FW_FEATURE_LPAR))
+ return false;
+
rc = _plpks_get_config();
if (rc)
return false;
--
2.39.2
