From: Peter Zijlstra
> Sent: 30 November 2020 11:27
>
> Just like 64bit pte_t, have a low/high split in pmd_t.
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
> ---
> 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;
Would it be better to use u32 and u64?
David
-
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