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s390/ap: exploit new B bit from QCI config info

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This patch introduces an update to the ap_config_info
struct which is filled with the QCI subfunction. There
is a new bit apsb (short 'B') showing if the AP secure
bind facility is available. The patch also includes a
simple function ap_sb_available() wrapping this bit test.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Harald Freudenberger
2022-09-20 15:12:01 +02:00
committed by Heiko Carstens
parent 964d581daf
commit f604704021
4 changed files with 27 additions and 13 deletions
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1
drivers/s390/crypto/ap_bus.h
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@@ -296,6 +296,7 @@ void ap_cancel_message(struct ap_queue *aq, struct ap_message *ap_msg);
void ap_flush_queue(struct ap_queue *aq);
void *ap_airq_ptr(void);
int ap_sb_available(void);
void ap_wait(enum ap_sm_wait wait);
void ap_request_timeout(struct timer_list *t);
void ap_bus_force_rescan(void);