[tip: x86/mm] sh/mm: Make pmd_t similar to pte_t

[tip-bot2 for Peter Zijlstra]

The following commit has been merged into the x86/mm branch of tip:

Commit-ID:     0862ff059c9e29f023e617b134f9ea332cae50b8
Gitweb:        https://git.kernel.org/tip/0862ff059c9e29f023e617b134f9ea332cae50b8
Author:        Peter Zijlstra <peterz@xxxxxxxxxxxxx>
AuthorDate:    Thu, 26 Nov 2020 17:05:55 +01:00
Committer:     Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
CommitterDate: Thu, 15 Dec 2022 10:37:27 -08:00

sh/mm: Make pmd_t similar to pte_t

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

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20221022114424.645657294%40infradead.org
---
 arch/sh/include/asm/pgtable-3level.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/arch/sh/include/asm/pgtable-3level.h b/arch/sh/include/asm/pgtable-3level.h
index cdced80..a889a3a 100644
--- 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)
 {