x86/HVM: adjust hvm_get_mem_pinned_cacheattr() GFN parameter

Make it gfn_t and rename it accordingly.

Suggested-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

--- a/xen/arch/x86/hvm/mtrr.c
+++ b/xen/arch/x86/hvm/mtrr.c
@@ -545,7 +545,7 @@ void hvm_destroy_cacheattr_region_list(
 
 int hvm_get_mem_pinned_cacheattr(
     struct domain *d,
-    uint64_t guest_fn,
+    gfn_t gfn,
     unsigned int order)
 {
     struct hvm_mem_pinned_cacheattr_range *range;
@@ -559,14 +559,14 @@ int hvm_get_mem_pinned_cacheattr(
                               &d->arch.hvm_domain.pinned_cacheattr_ranges,
                               list )
     {
-        if ( ((guest_fn & mask) >= range->start) &&
-             ((guest_fn | ~mask) <= range->end) )
+        if ( ((gfn_x(gfn) & mask) >= range->start) &&
+             ((gfn_x(gfn) | ~mask) <= range->end) )
         {
             rc = range->type;
             break;
         }
-        if ( ((guest_fn & mask) <= range->end) &&
-             (range->start <= (guest_fn | ~mask)) )
+        if ( ((gfn_x(gfn) & mask) <= range->end) &&
+             ((gfn_x(gfn) | ~mask) >= range->start) )
         {
             rc = -EADDRNOTAVAIL;
             break;
@@ -808,7 +808,7 @@ int epte_get_entry_emt(struct domain *d,
         return MTRR_TYPE_WRBACK;
     }
 
-    gmtrr_mtype = hvm_get_mem_pinned_cacheattr(d, gfn, order);
+    gmtrr_mtype = hvm_get_mem_pinned_cacheattr(d, _gfn(gfn), order);
     if ( gmtrr_mtype >= 0 )
     {
         *ipat = 1;
--- a/xen/arch/x86/mm/shadow/multi.c
+++ b/xen/arch/x86/mm/shadow/multi.c
@@ -619,8 +619,7 @@ _sh_propagate(struct vcpu *v,
          *    gMTRR and gPAT.
          */
         if ( !mmio_mfn &&
-             (type = hvm_get_mem_pinned_cacheattr(d, gfn_x(target_gfn),
-                                                  0)) >= 0 )
+             (type = hvm_get_mem_pinned_cacheattr(d, target_gfn, 0)) >= 0 )
             sflags |= pat_type_2_pte_flags(type);
         else if ( d->arch.hvm_domain.is_in_uc_mode )
             sflags |= pat_type_2_pte_flags(PAT_TYPE_UNCACHABLE);
--- a/xen/include/asm-x86/hvm/cacheattr.h
+++ b/xen/include/asm-x86/hvm/cacheattr.h
@@ -1,20 +1,22 @@
 #ifndef __HVM_CACHEATTR_H__
 #define __HVM_CACHEATTR_H__
 
+#include <xen/mm.h>
+
 void hvm_init_cacheattr_region_list(
     struct domain *d);
 void hvm_destroy_cacheattr_region_list(
     struct domain *d);
 
 /*
- * To see guest_fn is in the pinned range or not,
+ * Check whether gfn is in the pinned range:
  * if yes, return 1, and set type to value in this range
  * if no,  return 0, setting type to ~0
  * if ambiguous, return -1, setting type to ~0 (possible only for order > 0)
  */
 int hvm_get_mem_pinned_cacheattr(
     struct domain *d,
-    uint64_t guest_fn,
+    gfn_t gfn,
     unsigned int order);