[Xen-devel,13/15] xen/x86: p2m-pod: Use typesafe gfn in p2m_pod_demand_populate

Message ID 20170913175953.16942-14-julien.grall@arm.com
State Superseded
Headers show
Series
  • xen/x86: Clean-up the PoD code
Related show

Commit Message

Julien Grall Sept. 13, 2017, 5:59 p.m.
Signed-off-by: Julien Grall <julien.grall@arm.com>

---

Cc: George Dunlap <george.dunlap@eu.citrix.com>
Cc: Jan Beulich <jbeulich@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
---
 xen/arch/x86/mm/p2m-ept.c |  4 ++--
 xen/arch/x86/mm/p2m-pod.c | 12 ++++++------
 xen/arch/x86/mm/p2m-pt.c  |  6 +++---
 xen/include/asm-x86/p2m.h |  2 +-
 4 files changed, 12 insertions(+), 12 deletions(-)

Patch

diff --git a/xen/arch/x86/mm/p2m-ept.c b/xen/arch/x86/mm/p2m-ept.c
index dff214cf7b..36627f1ce0 100644
--- a/xen/arch/x86/mm/p2m-ept.c
+++ b/xen/arch/x86/mm/p2m-ept.c
@@ -965,7 +965,7 @@  static mfn_t ept_get_entry(struct p2m_domain *p2m,
             index = gfn_remainder >> ( i * EPT_TABLE_ORDER);
             ept_entry = table + index;
 
-            if ( !p2m_pod_demand_populate(p2m, gfn, i * EPT_TABLE_ORDER, q) )
+            if ( !p2m_pod_demand_populate(p2m, gfn_t, i * EPT_TABLE_ORDER, q) )
                 goto retry;
             else
                 goto out;
@@ -987,7 +987,7 @@  static mfn_t ept_get_entry(struct p2m_domain *p2m,
 
         ASSERT(i == 0);
         
-        if ( p2m_pod_demand_populate(p2m, gfn, 
+        if ( p2m_pod_demand_populate(p2m, gfn_t,
                                         PAGE_ORDER_4K, q) )
             goto out;
     }
diff --git a/xen/arch/x86/mm/p2m-pod.c b/xen/arch/x86/mm/p2m-pod.c
index 0dd0f0a083..5c79444d7b 100644
--- a/xen/arch/x86/mm/p2m-pod.c
+++ b/xen/arch/x86/mm/p2m-pod.c
@@ -1076,13 +1076,13 @@  static void pod_eager_record(struct p2m_domain *p2m, gfn_t gfn,
 }
 
 int
-p2m_pod_demand_populate(struct p2m_domain *p2m, unsigned long gfn,
+p2m_pod_demand_populate(struct p2m_domain *p2m, gfn_t gfn,
                         unsigned int order,
                         p2m_query_t q)
 {
     struct domain *d = p2m->domain;
     struct page_info *p = NULL; /* Compiler warnings */
-    gfn_t gfn_aligned = _gfn((gfn >> order) << order);
+    gfn_t gfn_aligned = _gfn((gfn_x(gfn) >> order) << order);
     mfn_t mfn;
     unsigned long i;
 
@@ -1135,8 +1135,8 @@  p2m_pod_demand_populate(struct p2m_domain *p2m, unsigned long gfn,
         goto out_of_memory;
 
     /* Keep track of the highest gfn demand-populated by a guest fault */
-    if ( gfn > p2m->pod.max_guest )
-        p2m->pod.max_guest = gfn;
+    if ( gfn_x(gfn) > p2m->pod.max_guest )
+        p2m->pod.max_guest = gfn_x(gfn);
 
     /*
      * Get a page f/ the cache.  A NULL return value indicates that the
@@ -1170,7 +1170,7 @@  p2m_pod_demand_populate(struct p2m_domain *p2m, unsigned long gfn,
             int d:16,order:16;
         } t;
 
-        t.gfn = gfn;
+        t.gfn = gfn_x(gfn);
         t.mfn = mfn_x(mfn);
         t.d = d->domain_id;
         t.order = order;
@@ -1210,7 +1210,7 @@  remap_and_retry:
             int d:16;
         } t;
 
-        t.gfn = gfn;
+        t.gfn = gfn_x(gfn);
         t.d = d->domain_id;
 
         __trace_var(TRC_MEM_POD_SUPERPAGE_SPLINTER, 0, sizeof(t), &t);
diff --git a/xen/arch/x86/mm/p2m-pt.c b/xen/arch/x86/mm/p2m-pt.c
index 57878b1886..3dd4bef66e 100644
--- a/xen/arch/x86/mm/p2m-pt.c
+++ b/xen/arch/x86/mm/p2m-pt.c
@@ -802,7 +802,7 @@  pod_retry_l3:
             {
                 if ( q & P2M_ALLOC )
                 {
-                    if ( !p2m_pod_demand_populate(p2m, gfn, PAGE_ORDER_1G, q) )
+                    if ( !p2m_pod_demand_populate(p2m, gfn_t, PAGE_ORDER_1G, q) )
                         goto pod_retry_l3;
                     gdprintk(XENLOG_ERR, "%s: Allocate 1GB failed!\n", __func__);
                 }
@@ -844,7 +844,7 @@  pod_retry_l2:
         if ( p2m_flags_to_type(flags) == p2m_populate_on_demand )
         {
             if ( q & P2M_ALLOC ) {
-                if ( !p2m_pod_demand_populate(p2m, gfn, PAGE_ORDER_2M, q) )
+                if ( !p2m_pod_demand_populate(p2m, gfn_t, PAGE_ORDER_2M, q) )
                     goto pod_retry_l2;
             } else
                 *t = p2m_populate_on_demand;
@@ -883,7 +883,7 @@  pod_retry_l1:
         if ( l1t == p2m_populate_on_demand )
         {
             if ( q & P2M_ALLOC ) {
-                if ( !p2m_pod_demand_populate(p2m, gfn, PAGE_ORDER_4K, q) )
+                if ( !p2m_pod_demand_populate(p2m, gfn_t, PAGE_ORDER_4K, q) )
                     goto pod_retry_l1;
             } else
                 *t = p2m_populate_on_demand;
diff --git a/xen/include/asm-x86/p2m.h b/xen/include/asm-x86/p2m.h
index 07ca02a173..1ae9216404 100644
--- a/xen/include/asm-x86/p2m.h
+++ b/xen/include/asm-x86/p2m.h
@@ -720,7 +720,7 @@  extern void audit_p2m(struct domain *d,
 
 /* Called by p2m code when demand-populating a PoD page */
 int
-p2m_pod_demand_populate(struct p2m_domain *p2m, unsigned long gfn,
+p2m_pod_demand_populate(struct p2m_domain *p2m, gfn_t gfn,
                         unsigned int order,
                         p2m_query_t q);