[Xen-devel] [RFC XEN PATCH v3 18/39] xen/pmem: support PMEM_REGION_TYPE_MGMT for XEN_SYSCTL_nvdimm_pmem_get_regions_nr

[Haozhong Zhang <haozhong.zhang@xxxxxxxxx>]

Allow XEN_SYSCTL_nvdimm_pmem_get_regions_nr to return the number of
management PMEM regions.

Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
---
Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Cc: Jan Beulich <jbeulich@xxxxxxxx>
---
 tools/libxc/xc_misc.c | 4 +++-
 xen/common/pmem.c     | 4 ++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/libxc/xc_misc.c b/tools/libxc/xc_misc.c
index bebe6d04c8..4b5558aaa5 100644
--- a/tools/libxc/xc_misc.c
+++ b/tools/libxc/xc_misc.c
@@ -894,7 +894,9 @@ int xc_nvdimm_pmem_get_regions_nr(xc_interface *xch, 
uint8_t type, uint32_t *nr)
     xen_sysctl_nvdimm_op_t *nvdimm = &sysctl.u.nvdimm;
     int rc;
 
-    if ( !nr || type != PMEM_REGION_TYPE_RAW )
+    if ( !nr ||
+         (type != PMEM_REGION_TYPE_RAW &&
+          type != PMEM_REGION_TYPE_MGMT) )
         return -EINVAL;
 
     sysctl.cmd = XEN_SYSCTL_nvdimm_op;
diff --git a/xen/common/pmem.c b/xen/common/pmem.c
index 7a081c2879..54b3e7119a 100644
--- a/xen/common/pmem.c
+++ b/xen/common/pmem.c
@@ -142,6 +142,10 @@ static int 
pmem_get_regions_nr(xen_sysctl_nvdimm_pmem_regions_nr_t *regions_nr)
         regions_nr->num_regions = nr_raw_regions;
         break;
 
+    case PMEM_REGION_TYPE_MGMT:
+        regions_nr->num_regions = nr_mgmt_regions;
+        break;
+
     default:
         rc = -EINVAL;
     }
-- 
2.14.1


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