[Xen-devel] [PATCH v4 6/7] x86/mm: drop p2mt parameter from map_domain_gfn()

[Jan Beulich <jbeulich@xxxxxxxx>]

No caller actually consumes it.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
---
v4: New.

--- a/xen/arch/x86/hvm/dom0_build.c
+++ b/xen/arch/x86/hvm/dom0_build.c
@@ -278,7 +278,6 @@ static int __init pvh_add_mem_range(stru
 
 static int __init pvh_setup_vmx_realmode_helpers(struct domain *d)
 {
-    p2m_type_t p2mt;
     uint32_t rc, *ident_pt;
     mfn_t mfn;
     paddr_t gaddr;
@@ -317,7 +316,7 @@ static int __init pvh_setup_vmx_realmode
      * superpages.
      */
     ident_pt = map_domain_gfn(p2m_get_hostp2m(d), _gfn(PFN_DOWN(gaddr)),
-                              &mfn, &p2mt, 0, &rc);
+                              &mfn, 0, &rc);
     if ( ident_pt == NULL )
     {
         printk("Unable to map identity page tables\n");
--- a/xen/arch/x86/mm/guest_walk.c
+++ b/xen/arch/x86/mm/guest_walk.c
@@ -86,7 +86,6 @@ guest_walk_tables(const struct vcpu *v,
                   gfn_t top_gfn, mfn_t top_mfn, void *top_map)
 {
     struct domain *d = v->domain;
-    p2m_type_t p2mt;
     guest_l1e_t *l1p = NULL;
     guest_l2e_t *l2p = NULL;
 #if GUEST_PAGING_LEVELS >= 4 /* 64-bit only... */
@@ -165,7 +164,6 @@ guest_walk_tables(const struct vcpu *v,
     l3p = map_domain_gfn(p2m,
                          guest_l4e_get_gfn(gw->l4e),
                          &gw->l3mfn,
-                         &p2mt,
                          qt,
                          &rc);
     if ( l3p == NULL )
@@ -257,7 +255,6 @@ guest_walk_tables(const struct vcpu *v,
     l2p = map_domain_gfn(p2m,
                          guest_l3e_get_gfn(gw->l3e),
                          &gw->l2mfn,
-                         &p2mt,
                          qt,
                          &rc);
     if ( l2p == NULL )
@@ -357,7 +354,6 @@ guest_walk_tables(const struct vcpu *v,
     l1p = map_domain_gfn(p2m,
                          guest_l2e_get_gfn(gw->l2e),
                          &gw->l1mfn,
-                         &p2mt,
                          qt,
                          &rc);
     if ( l1p == NULL )
--- a/xen/arch/x86/mm/hap/nested_ept.c
+++ b/xen/arch/x86/mm/hap/nested_ept.c
@@ -151,7 +151,6 @@ static uint32_t
 nept_walk_tables(struct vcpu *v, unsigned long l2ga, ept_walk_t *gw)
 {
     int lvl;
-    p2m_type_t p2mt;
     uint32_t rc = 0, ret = 0, gflags;
     struct domain *d = v->domain;
     struct p2m_domain *p2m = d->arch.p2m;
@@ -163,7 +162,7 @@ nept_walk_tables(struct vcpu *v, unsigne
 
     for (lvl = 4; lvl > 0; lvl--)
     {
-        lxp = map_domain_gfn(p2m, base_gfn, &lxmfn, &p2mt, P2M_ALLOC, &rc);
+        lxp = map_domain_gfn(p2m, base_gfn, &lxmfn, P2M_ALLOC, &rc);
         if ( !lxp )
             goto map_err;
         gw->lxe[lvl] = lxp[ept_lvl_table_offset(l2ga, lvl)];
--- a/xen/arch/x86/mm/p2m.c
+++ b/xen/arch/x86/mm/p2m.c
@@ -2214,8 +2214,9 @@ unsigned long paging_gva_to_gfn(struct v
  * synthetic/structure PFEC_* bits.
  */
 void *map_domain_gfn(struct p2m_domain *p2m, gfn_t gfn, mfn_t *mfn,
-                     p2m_type_t *p2mt, p2m_query_t q, uint32_t *pfec)
+                     p2m_query_t q, uint32_t *pfec)
 {
+    p2m_type_t p2mt;
     struct page_info *page;
 
     if ( !gfn_valid(p2m->domain, gfn) )
@@ -2225,8 +2226,8 @@ void *map_domain_gfn(struct p2m_domain *
     }
 
     /* Translate the gfn, unsharing if shared. */
-    page = p2m_get_page_from_gfn(p2m, gfn, p2mt, NULL, q);
-    if ( p2m_is_paging(*p2mt) )
+    page = p2m_get_page_from_gfn(p2m, gfn, &p2mt, NULL, q);
+    if ( p2m_is_paging(p2mt) )
     {
         ASSERT(p2m_is_hostp2m(p2m));
         if ( page )
@@ -2235,7 +2236,7 @@ void *map_domain_gfn(struct p2m_domain *
         *pfec = PFEC_page_paged;
         return NULL;
     }
-    if ( p2m_is_shared(*p2mt) )
+    if ( p2m_is_shared(p2mt) )
     {
         if ( page )
             put_page(page);
--- a/xen/include/asm-x86/p2m.h
+++ b/xen/include/asm-x86/p2m.h
@@ -762,7 +762,7 @@ int __must_check p2m_set_entry(struct p2
 extern void p2m_pt_init(struct p2m_domain *p2m);
 
 void *map_domain_gfn(struct p2m_domain *p2m, gfn_t gfn, mfn_t *mfn,
-                     p2m_type_t *p2mt, p2m_query_t q, uint32_t *pfec);
+                     p2m_query_t q, uint32_t *pfec);
 
 /* Debugging and auditing of the P2M code? */
 #ifndef NDEBUG


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