From: Will Deacon <will.deacon@xxxxxxx> Subject: x86/pgtable: drop pXd_none() checks from pXd_free_pYd_table() The core code already has a check for pXd_none(), so remove it from the architecture implementation. Link: http://lkml.kernel.org/r/1544120495-17438-4-git-send-email-will.deacon@xxxxxxx Signed-off-by: Will Deacon <will.deacon@xxxxxxx> Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Reviewed-by: Toshi Kani <toshi.kani@xxxxxxx> Cc: Chintan Pandya <cpandya@xxxxxxxxxxxxxx> Cc: Toshi Kani <toshi.kani@xxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Sean Christopherson <sean.j.christopherson@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- --- a/arch/x86/mm/pgtable.c~x86-pgtable-drop-pxd_none-checks-from-pxd_free_pyd_table +++ a/arch/x86/mm/pgtable.c @@ -811,9 +811,6 @@ int pud_free_pmd_page(pud_t *pud, unsign pte_t *pte; int i; - if (pud_none(*pud)) - return 1; - pmd = (pmd_t *)pud_page_vaddr(*pud); pmd_sv = (pmd_t *)__get_free_page(GFP_KERNEL); if (!pmd_sv) @@ -855,9 +852,6 @@ int pmd_free_pte_page(pmd_t *pmd, unsign { pte_t *pte; - if (pmd_none(*pmd)) - return 1; - pte = (pte_t *)pmd_page_vaddr(*pmd); pmd_clear(pmd); _
