Merge remote-tracking branch 'origin/master' into perf/core

Further perf/core patches will depend on:

  d3f7b1bb2040 ("mm/gup: fix gup_fast with dynamic page table folding")

which is already in Linus' tree.

1 files changed, 34 insertions, 9 deletions

diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index c314e9495c1b..fc06a4002168 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -65,6 +65,8 @@ int chsc_error_from_response(int response)
 	case 0x0100:
 	case 0x0102:
 		return -ENOMEM;
+	case 0x0108:		/* "HW limit exceeded" for the op 0x003d */
+		return -EUSERS;
 	default:
 		return -EIO;
 	}
@@ -1114,7 +1116,7 @@ int chsc_enable_facility(int operation_code)
 	return ret;
 }
 
-int __init chsc_get_cssid(int idx)
+int __init chsc_get_cssid_iid(int idx, u8 *cssid, u8 *iid)
 {
 	struct {
 		struct chsc_header request;
@@ -1125,7 +1127,8 @@ int __init chsc_get_cssid(int idx)
 		u32 reserved2[3];
 		struct {
 			u8 cssid;
-			u32 : 24;
+			u8 iid;
+			u32 : 16;
 		} list[0];
 	} *sdcal_area;
 	int ret;
@@ -1151,8 +1154,10 @@ int __init chsc_get_cssid(int idx)
 	}
 
 	if ((addr_t) &sdcal_area->list[idx] <
-	    (addr_t) &sdcal_area->response + sdcal_area->response.length)
-		ret = sdcal_area->list[idx].cssid;
+	    (addr_t) &sdcal_area->response + sdcal_area->response.length) {
+		*cssid = sdcal_area->list[idx].cssid;
+		*iid = sdcal_area->list[idx].iid;
+	}
 	else
 		ret = -ENODEV;
 exit:
@@ -1260,6 +1265,27 @@ int chsc_sstpi(void *page, void *result, size_t size)
 	return (rr->response.code == 0x0001) ? 0 : -EIO;
 }
 
+int chsc_stzi(void *page, void *result, size_t size)
+{
+	struct {
+		struct chsc_header request;
+		unsigned int rsvd0[3];
+		struct chsc_header response;
+		char data[];
+	} *rr;
+	int rc;
+
+	memset(page, 0, PAGE_SIZE);
+	rr = page;
+	rr->request.length = 0x0010;
+	rr->request.code = 0x003e;
+	rc = chsc(rr);
+	if (rc)
+		return -EIO;
+	memcpy(result, &rr->data, size);
+	return (rr->response.code == 0x0001) ? 0 : -EIO;
+}
+
 int chsc_siosl(struct subchannel_id schid)
 {
 	struct {
@@ -1340,6 +1366,7 @@ EXPORT_SYMBOL_GPL(chsc_scm_info);
  * chsc_pnso() - Perform Network-Subchannel Operation
  * @schid:		id of the subchannel on which PNSO is performed
  * @pnso_area:		request and response block for the operation
+ * @oc:			Operation Code
  * @resume_token:	resume token for multiblock response
  * @cnc:		Boolean change-notification control
  *
@@ -1347,10 +1374,8 @@ EXPORT_SYMBOL_GPL(chsc_scm_info);
  *
  * Returns 0 on success.
  */
-int chsc_pnso(struct subchannel_id schid,
-	      struct chsc_pnso_area *pnso_area,
-	      struct chsc_pnso_resume_token resume_token,
-	      int cnc)
+int chsc_pnso(struct subchannel_id schid, struct chsc_pnso_area *pnso_area,
+	      u8 oc, struct chsc_pnso_resume_token resume_token, int cnc)
 {
 	memset(pnso_area, 0, sizeof(*pnso_area));
 	pnso_area->request.length = 0x0030;
@@ -1359,7 +1384,7 @@ int chsc_pnso(struct subchannel_id schid,
 	pnso_area->ssid  = schid.ssid;
 	pnso_area->sch	 = schid.sch_no;
 	pnso_area->cssid = schid.cssid;
-	pnso_area->oc	 = 0; /* Store-network-bridging-information list */
+	pnso_area->oc	 = oc;
 	pnso_area->resume_token = resume_token;
 	pnso_area->n	   = (cnc != 0);
 	if (chsc(pnso_area))