Commit 7a334a28 authored by Heiko Carstens's avatar Heiko Carstens
Browse files

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: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: default avatarHarald Freudenberger <freude@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent da001fce

arch/s390/include/asm/ap.h

+3 −1
Original line number Diff line number Diff line
@@ -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;