[Xen-devel] [PATCH v2 06/20] x86/mem_sharing: drop flags from mem_sharing_unshare_page

[Tamas K Lengyel <tamas.lengyel@intel.com>]

All callers pass 0 in.

Signed-off-by: Tamas K Lengyel <tamas.lengyel@intel.com>
Reviewed-by: Wei Liu <wl@xen.org>
---
 xen/arch/x86/hvm/hvm.c            | 2 +-
 xen/arch/x86/mm/p2m.c             | 5 ++---
 xen/include/asm-x86/mem_sharing.h | 8 +++-----
 3 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/xen/arch/x86/hvm/hvm.c b/xen/arch/x86/hvm/hvm.c
index 1e888b403b..e055114922 100644
--- a/xen/arch/x86/hvm/hvm.c
+++ b/xen/arch/x86/hvm/hvm.c
@@ -1902,7 +1902,7 @@ int hvm_hap_nested_page_fault(paddr_t gpa, unsigned long gla,
     if ( npfec.write_access && (p2mt == p2m_ram_shared) )
     {
         ASSERT(p2m_is_hostp2m(p2m));
-        sharing_enomem = mem_sharing_unshare_page(currd, gfn, 0);
+        sharing_enomem = mem_sharing_unshare_page(currd, gfn);
         rc = 1;
         goto out_put_gfn;
     }
diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c
index 3119269073..baea632acc 100644
--- a/xen/arch/x86/mm/p2m.c
+++ b/xen/arch/x86/mm/p2m.c
@@ -515,7 +515,7 @@ mfn_t __get_gfn_type_access(struct p2m_domain *p2m, unsigned long gfn_l,
          * Try to unshare. If we fail, communicate ENOMEM without
          * sleeping.
          */
-        if ( mem_sharing_unshare_page(p2m->domain, gfn_l, 0) < 0 )
+        if ( mem_sharing_unshare_page(p2m->domain, gfn_l) < 0 )
             mem_sharing_notify_enomem(p2m->domain, gfn_l, false);
         mfn = p2m->get_entry(p2m, gfn, t, a, q, page_order, NULL);
     }
@@ -896,8 +896,7 @@ guest_physmap_add_entry(struct domain *d, gfn_t gfn, mfn_t mfn,
         {
             /* Do an unshare to cleanly take care of all corner cases. */
             int rc;
-            rc = mem_sharing_unshare_page(p2m->domain,
-                                          gfn_x(gfn_add(gfn, i)), 0);
+            rc = mem_sharing_unshare_page(p2m->domain, gfn_x(gfn_add(gfn, i)));
             if ( rc )
             {
                 p2m_unlock(p2m);
diff --git a/xen/include/asm-x86/mem_sharing.h b/xen/include/asm-x86/mem_sharing.h
index 7d40e38563..0a9192d0e2 100644
--- a/xen/include/asm-x86/mem_sharing.h
+++ b/xen/include/asm-x86/mem_sharing.h
@@ -70,10 +70,9 @@ int __mem_sharing_unshare_page(struct domain *d,
 
 static inline
 int mem_sharing_unshare_page(struct domain *d,
-                             unsigned long gfn,
-                             uint16_t flags)
+                             unsigned long gfn)
 {
-    int rc = __mem_sharing_unshare_page(d, gfn, flags);
+    int rc = __mem_sharing_unshare_page(d, gfn, 0);
     BUG_ON(rc && (rc != -ENOMEM));
     return rc;
 }
@@ -117,8 +116,7 @@ static inline unsigned int mem_sharing_get_nr_shared_mfns(void)
 }
 
 static inline
-int mem_sharing_unshare_page(struct domain *d, unsigned long gfn,
-                             uint16_t flags)
+int mem_sharing_unshare_page(struct domain *d, unsigned long gfn)
 {
     ASSERT_UNREACHABLE();
     return -EOPNOTSUPP;
-- 
2.20.1


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