Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Martin Schwidefsky:
 "The second patch set for the 4.14 merge window:

   - Convert the dasd device driver to the blk-mq interface.

   - Provide three zcrypt interfaces for vfio_ap. These will be required
     for KVM guest access to the crypto cards attached via the AP bus.

   - A couple of memory management bug fixes."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/dasd: blk-mq conversion
  s390/mm: use a single lock for the fields in mm_context_t
  s390/mm: fix race on mm->context.flush_mm
  s390/mm: fix local TLB flushing vs. detach of an mm address space
  s390/zcrypt: externalize AP queue interrupt control
  s390/zcrypt: externalize AP config info query
  s390/zcrypt: externalize test AP queue
  s390/mm: use VM_BUG_ON in crst_table_[upgrade|downgrade]

1 files changed, 24 insertions, 2 deletions

diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c
index 0f1a5d02acb0..56b96edffd5b 100644
--- a/drivers/s390/crypto/ap_queue.c
+++ b/drivers/s390/crypto/ap_queue.c
@@ -16,6 +16,25 @@
 #include "ap_asm.h"
 
 /**
+ * ap_queue_irq_ctrl(): Control interruption on a AP queue.
+ * @qirqctrl: struct ap_qirq_ctrl (64 bit value)
+ * @ind: The notification indicator byte
+ *
+ * Returns AP queue status.
+ *
+ * Control interruption on the given AP queue.
+ * Just a simple wrapper function for the low level PQAP(AQIC)
+ * instruction available for other kernel modules.
+ */
+struct ap_queue_status ap_queue_irq_ctrl(ap_qid_t qid,
+					 struct ap_qirq_ctrl qirqctrl,
+					 void *ind)
+{
+	return ap_aqic(qid, qirqctrl, ind);
+}
+EXPORT_SYMBOL(ap_queue_irq_ctrl);
+
+/**
  * ap_queue_enable_interruption(): Enable interruption on an AP queue.
  * @qid: The AP queue number
  * @ind: the notification indicator byte
@@ -27,8 +46,11 @@
 static int ap_queue_enable_interruption(struct ap_queue *aq, void *ind)
 {
 	struct ap_queue_status status;
+	struct ap_qirq_ctrl qirqctrl = { 0 };
 
-	status = ap_aqic(aq->qid, ind);
+	qirqctrl.ir = 1;
+	qirqctrl.isc = AP_ISC;
+	status = ap_aqic(aq->qid, qirqctrl, ind);
 	switch (status.response_code) {
 	case AP_RESPONSE_NORMAL:
 	case AP_RESPONSE_OTHERWISE_CHANGED:
@@ -362,7 +384,7 @@ static enum ap_wait ap_sm_setirq_wait(struct ap_queue *aq)
 		/* Get the status with TAPQ */
 		status = ap_tapq(aq->qid, NULL);
 
-	if (status.int_enabled == 1) {
+	if (status.irq_enabled == 1) {
 		/* Irqs are now enabled */
 		aq->interrupt = AP_INTR_ENABLED;
 		aq->state = (aq->queue_count > 0) ?