[Xen-devel] [PATCH v6 2/9] x86/mm: move disallow masks to pv/mm.h

[Wei Liu <wei.liu2@xxxxxxxxxx>]

This is in preparation for adding an extra parameter to
get_page_from_l1e for disallow mask.

No functional change.

Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
 xen/arch/x86/mm.c    | 19 +------------------
 xen/arch/x86/pv/mm.h | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 18 deletions(-)

diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
index 97ec467002..bfa0a6436c 100644
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -153,24 +153,7 @@ bool __read_mostly machine_to_phys_mapping_valid;
 
 struct rangeset *__read_mostly mmio_ro_ranges;
 
-static uint32_t base_disallow_mask;
-/* Global bit is allowed to be set on L1 PTEs. Intended for user mappings. */
-#define L1_DISALLOW_MASK ((base_disallow_mask | _PAGE_GNTTAB) & ~_PAGE_GLOBAL)
-
-#define L2_DISALLOW_MASK base_disallow_mask
-
-#define l3_disallow_mask(d) (!is_pv_32bit_domain(d) ? \
-                             base_disallow_mask : 0xFFFFF198U)
-
-#define L4_DISALLOW_MASK (base_disallow_mask)
-
-#define l1_disallow_mask(d)                                     \
-    ((d != dom_io) &&                                           \
-     (rangeset_is_empty((d)->iomem_caps) &&                     \
-      rangeset_is_empty((d)->arch.ioport_caps) &&               \
-      !has_arch_pdevs(d) &&                                     \
-      is_pv_domain(d)) ?                                        \
-     L1_DISALLOW_MASK : (L1_DISALLOW_MASK & ~PAGE_CACHE_ATTRS))
+uint32_t base_disallow_mask;
 
 static s8 __read_mostly opt_mmio_relax;
 
diff --git a/xen/arch/x86/pv/mm.h b/xen/arch/x86/pv/mm.h
index 976209ba4c..84ca71bd08 100644
--- a/xen/arch/x86/pv/mm.h
+++ b/xen/arch/x86/pv/mm.h
@@ -1,6 +1,25 @@
 #ifndef __PV_MM_H__
 #define __PV_MM_H__
 
+extern uint32_t base_disallow_mask;
+/* Global bit is allowed to be set on L1 PTEs. Intended for user mappings. */
+#define L1_DISALLOW_MASK ((base_disallow_mask | _PAGE_GNTTAB) & ~_PAGE_GLOBAL)
+
+#define L2_DISALLOW_MASK base_disallow_mask
+
+#define l3_disallow_mask(d) (!is_pv_32bit_domain(d) ? \
+                             base_disallow_mask : 0xFFFFF198U)
+
+#define L4_DISALLOW_MASK (base_disallow_mask)
+
+#define l1_disallow_mask(d)                                     \
+    ((d != dom_io) &&                                           \
+     (rangeset_is_empty((d)->iomem_caps) &&                     \
+      rangeset_is_empty((d)->arch.ioport_caps) &&               \
+      !has_arch_pdevs(d) &&                                     \
+      is_pv_domain(d)) ?                                        \
+     L1_DISALLOW_MASK : (L1_DISALLOW_MASK & ~PAGE_CACHE_ATTRS))
+
 l1_pgentry_t *map_guest_l1e(unsigned long linear, mfn_t *gl1mfn);
 
 int new_guest_cr3(mfn_t mfn);
-- 
2.11.0


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