[PATCH RFC 04/13] x86/mm: carve out create_grant_pv_mapping

[Wei Liu <wei.liu2@citrix.com>]

We will later split out PV specific code to pv/mm.c.

No functional change.

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
 xen/arch/x86/mm.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
index 4bf94227cc..b44d44c782 100644
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -4242,15 +4242,12 @@ static int create_grant_p2m_mapping(uint64_t addr, unsigned long frame,
         return GNTST_okay;
 }
 
-int create_grant_host_mapping(uint64_t addr, unsigned long frame, 
-                              unsigned int flags, unsigned int cache_flags)
+static int create_grant_pv_mapping(uint64_t addr, unsigned long frame,
+                                   unsigned int flags, unsigned int cache_flags)
 {
     l1_pgentry_t pte;
     uint32_t grant_pte_flags;
 
-    if ( paging_mode_external(current->domain) )
-        return create_grant_p2m_mapping(addr, frame, flags, cache_flags);
-
     grant_pte_flags =
         _PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_GNTTAB;
     if ( cpu_has_nx )
@@ -4273,6 +4270,15 @@ int create_grant_host_mapping(uint64_t addr, unsigned long frame,
     return create_grant_va_mapping(addr, pte, current);
 }
 
+int create_grant_host_mapping(uint64_t addr, unsigned long frame,
+                              unsigned int flags, unsigned int cache_flags)
+{
+    if ( paging_mode_external(current->domain) )
+        return create_grant_p2m_mapping(addr, frame, flags, cache_flags);
+
+    return create_grant_pv_mapping(addr, frame, flags, cache_flags);
+}
+
 static int replace_grant_p2m_mapping(
     uint64_t addr, unsigned long frame, uint64_t new_addr, unsigned int flags)
 {
-- 
2.11.0


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