diff options
| author | Harald Freudenberger <freude@linux.ibm.com> | 2019-05-21 13:50:09 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2019-05-28 14:49:38 +0200 |
| commit | 7379e652797c0b9b5f6caea1576f2dff9ce6a708 (patch) | |
| tree | e961b5617c10a79bd594bc1b7db433d49c39d993 /arch/s390/include | |
| parent | dcd33b23c9f322274efb94d6e86370bac2b3c68f (diff) | |
s390/zcrypt: Fix wrong dispatching for control domain CPRBs
The zcrypt device driver does not handle CPRBs which address
a control domain correctly. This fix introduces a workaround:
The domain field of the request CPRB is checked if there is
a valid domain value in there. If this is true and the value
is a control only domain (a domain which is enabled in the
crypto config ADM mask but disabled in the AQM mask) the
CPRB is forwarded to the default usage domain. If there is
no default domain, the request is rejected with an ENODEV.
This fix is important for maintaining crypto adapters. For
example one LPAR can use a crypto adapter domain ('Control
and Usage') but another LPAR needs to be able to maintain
this adapter domain ('Control'). Scenarios like this did
not work properly and the patch enables this.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/ap.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h index e94a0a28b5eb..aea32dda3d14 100644 --- a/arch/s390/include/asm/ap.h +++ b/arch/s390/include/asm/ap.h @@ -160,8 +160,8 @@ struct ap_config_info { unsigned char Nd; /* max # of Domains - 1 */ unsigned char _reserved3[10]; unsigned int apm[8]; /* AP ID mask */ - unsigned int aqm[8]; /* AP queue mask */ - unsigned int adm[8]; /* AP domain mask */ + unsigned int aqm[8]; /* AP (usage) queue mask */ + unsigned int adm[8]; /* AP (control) domain mask */ unsigned char _reserved4[16]; } __aligned(8); |