On 2023/06/16 20:55, Likhitha Korrapati wrote:
> Patch removes redundant checks for PTE (Page Table Entry) because those
> conditions are already covered.
>
> if (!(pte & _PAGE_PRESENT)) {
> ...
> return FALSE;
> }
>
> if (!pte)
> return FALSE;
>
> The second pte check is redundant because it holds true only when pte is
> 0. if pte is 0 then (!(pte & _PAGE_PRESENT)) is true and it will return
> false. so there is no need for one more pte check.
>
> Signed-off-by: Likhitha Korrapati <likhitha@xxxxxxxxxxxxx>
thanks for the cleanup.
Acked-by: Kazuhito Hagio <k-hagio-ab@xxxxxxx>
Thanks,
Kazu
> ---
> ppc64.c | 6 ------
> 1 file changed, 6 deletions(-)
>
> diff --git a/ppc64.c b/ppc64.c
> index b95a621..fc34006 100644
> --- a/ppc64.c
> +++ b/ppc64.c
> @@ -968,9 +968,6 @@ ppc64_vtop(ulong vaddr, ulong *pgd, physaddr_t *paddr, int verbose)
> return FALSE;
> }
>
> - if (!pte)
> - return FALSE;
> -
> *paddr = PAGEBASE(PTOB(pte >> PTE_RPN_SHIFT_DEFAULT)) + PAGEOFFSET(vaddr);
>
> if (verbose) {
> @@ -1077,9 +1074,6 @@ ppc64_vtop_level4(ulong vaddr, ulong *level4, physaddr_t *paddr, int verbose)
> return FALSE;
> }
>
> - if (!pte)
> - return FALSE;
> -
> out:
> if (hugepage_type) {
> if (hugepage_type == 2) {
--
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