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authorHarald Freudenberger <freude@linux.ibm.com>2019-05-21 13:50:09 +0200
committerHeiko Carstens <heiko.carstens@de.ibm.com>2019-05-28 14:49:38 +0200
commit7379e652797c0b9b5f6caea1576f2dff9ce6a708 (patch)
treee961b5617c10a79bd594bc1b7db433d49c39d993 /arch
parentdcd33b23c9f322274efb94d6e86370bac2b3c68f (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')
-rw-r--r--arch/s390/include/asm/ap.h4
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);