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| author |   Heiko Carstens <hca@linux.ibm.com> | 2021-12-02 20:58:07 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2021-12-10 16:14:26 +0100 |
| commit | 7a334a28a14bf8b8812bb2e626a6280ad0d21f4e (patch) | |
| tree | c8c024af1761810c3ffc33cd6947f49b570d1e50 /arch/s390/include/asm | |
| parent | s390/pgalloc: use pointers instead of unsigned long values (diff) | |
| download | linux-dev-7a334a28a14bf8b8812bb2e626a6280ad0d21f4e.tar.xz linux-dev-7a334a28a14bf8b8812bb2e626a6280ad0d21f4e.zip | |
s390/ap: add missing virt_to_phys address conversion
The address of the notification-indicator byte is an absolute
address. Therefore convert its virtual to a physical address before
being used with PQAP(AQIC).
Note: this currently doesn't fix a real bug, since virtual addresses
are indentical to physical ones.
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/ap.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h index 3afbee21dc1f..c0c8a1f6c35d 100644 --- a/arch/s390/include/asm/ap.h +++ b/arch/s390/include/asm/ap.h @@ -12,6 +12,8 @@ #ifndef _ASM_S390_AP_H_ #define _ASM_S390_AP_H_ +#include <linux/io.h> + /** * The ap_qid_t identifier of an ap queue. * If the AP facilities test (APFT) facility is available, @@ -238,7 +240,7 @@ static inline struct ap_queue_status ap_aqic(ap_qid_t qid, struct ap_qirq_ctrl qirqctrl; struct ap_queue_status status; } reg1; - void *reg2 = ind; + unsigned long reg2 = virt_to_phys(ind); reg1.qirqctrl = qirqctrl; |