Those helpers will be useful to do common operations without having to
unbox/box manually the GFNs/MFNs.
Signed-off-by: Julien Grall <julien.gr...@arm.com>
---
Cc: Stefano Stabellini <sstabell...@kernel.org>
Cc: Jan Beulich <jbeul...@suse.com>
Cc: Andrew Cooper <andrew.coop...@citrix.com>
Cc: George Dunlap <george.dun...@eu.citrix.com>
Cc: Ian Jackson <ian.jack...@eu.citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Cc: Tim Deegan <t...@xen.org>
Cc: Wei Liu <wei.l...@citrix.com>
Changes in v3:
- Use inline functions rather than macros
Changes in v2:
- Rename min_gfn/max_gfn to gfn_min/gfn_max
- Add more helpers for gfn and mfn
---
xen/include/xen/mm.h | 41 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/xen/include/xen/mm.h b/xen/include/xen/mm.h
index 3cf646a..13f706e 100644
--- a/xen/include/xen/mm.h
+++ b/xen/include/xen/mm.h
@@ -50,6 +50,7 @@
#include <xen/list.h>
#include <xen/spinlock.h>
#include <xen/typesafe.h>
+#include <xen/kernel.h>
#include <public/memory.h>
TYPE_SAFE(unsigned long, mfn);
@@ -61,6 +62,26 @@ TYPE_SAFE(unsigned long, mfn);
#undef mfn_t
#endif
+static inline mfn_t mfn_add(mfn_t mfn, unsigned long i)
+{
+ return _mfn(mfn_x(mfn) + i);
+}
+
+static inline mfn_t mfn_max(mfn_t x, mfn_t y)
+{
+ return _mfn(max(mfn_x(x), mfn_x(y)));
+}
+
+static inline mfn_t mfn_min(mfn_t x, mfn_t y)
+{
+ return _mfn(min(mfn_x(x), mfn_x(y)));
+}
+
+static inline bool_t mfn_eq(mfn_t x, mfn_t y)
+{
+ return mfn_x(x) == mfn_x(y);
+}
+
TYPE_SAFE(unsigned long, gfn);
#define PRI_gfn "05lx"
#define INVALID_GFN (~0UL)
@@ -70,6 +91,26 @@ TYPE_SAFE(unsigned long, gfn);
#undef gfn_t
#endif
+static inline gfn_t gfn_add(gfn_t gfn, unsigned long i)
+{
+ return _gfn(gfn_x(gfn) + i);
+}
+
+static inline gfn_t gfn_max(gfn_t x, gfn_t y)
+{
+ return _gfn(max(gfn_x(x), gfn_x(y)));
+}
+
+static inline gfn_t gfn_min(gfn_t x, gfn_t y)
+{
+ return _gfn(min(gfn_x(x), gfn_x(y)));
+}
+
+static inline bool_t gfn_eq(gfn_t x, gfn_t y)
+{
+ return gfn_x(x) == gfn_x(y);
+}
+
TYPE_SAFE(unsigned long, pfn);
#define PRI_pfn "05lx"
#define INVALID_PFN (~0UL)
--
1.9.1
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