[PATCH 03/13] sh/mm: Make pmd_t similar to pte_t

Peter Zijlstra
2022-10-22T11:49:17Z

Just like 64bit pte_t, have a low/high split in pmd_t.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
arch/sh/include/asm/pgtable-3level.h | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)

--- a/arch/sh/include/asm/pgtable-3level.h
+++ b/arch/sh/include/asm/pgtable-3level.h
@@ -28,9 +28,15 @@
#define pmd_ERROR(e) \
printk("%s:%d: bad pmd %016llx.\n", __FILE__, __LINE__, pmd_val(e))

-typedef struct { unsigned long long pmd; } pmd_t;
+typedef struct {
+ struct {
+ unsigned long pmd_low;
+ unsigned long pmd_high;
+ };
+ unsigned long long pmd;
+} pmd_t;
#define pmd_val(x) ((x).pmd)
-#define __pmd(x) ((pmd_t) { (x) } )
+#define __pmd(x) ((pmd_t) { .pmd = (x) } )

static inline pmd_t *pud_pgtable(pud_t pud)
{