diff options
| author | Harald Freudenberger <freude@linux.ibm.com> | 2022-09-20 16:12:01 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-03-20 13:12:48 +0300 |
| commit | f6047040217babeb9655b855c83d61cb1c375ac9 (patch) | |
| tree | 1d324433a041d9d5a10fed6c09d0b797ae126b6f /arch/s390 | |
| parent | 964d581daf46a1e65af220786104c6db88f833aa (diff) | |
| download | linux-f6047040217babeb9655b855c83d61cb1c375ac9.tar.xz | |
s390/ap: exploit new B bit from QCI config info
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>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/ap.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h index 6bb536e87897..5e4a88460a57 100644 --- a/arch/s390/include/asm/ap.h +++ b/arch/s390/include/asm/ap.h @@ -180,15 +180,16 @@ struct ap_config_info { unsigned int apxa : 1; /* N bit */ unsigned int qact : 1; /* C bit */ unsigned int rc8a : 1; /* R bit */ - unsigned char _reserved1 : 4; - unsigned char _reserved2[3]; - unsigned char Na; /* max # of APs - 1 */ - unsigned char Nd; /* max # of Domains - 1 */ - unsigned char _reserved3[10]; + unsigned int : 4; + unsigned int apsb : 1; /* B bit */ + unsigned int : 23; + unsigned char na; /* max # of APs - 1 */ + unsigned char nd; /* max # of Domains - 1 */ + unsigned char _reserved0[10]; unsigned int apm[8]; /* AP ID mask */ unsigned int aqm[8]; /* AP (usage) queue mask */ unsigned int adm[8]; /* AP (control) domain mask */ - unsigned char _reserved4[16]; + unsigned char _reserved1[16]; } __aligned(8); /** |