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x86/mm: Simplify the pgd_leaf() and p4d_leaf() checks a bit

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The functions return bool, simplify the checks.

[ mingo: Split off from two other patches. ]

Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250331081327.256412-6-bhe@redhat.com
This commit is contained in:
Baoquan He
2025-03-31 16:13:25 +08:00
committed by Ingo Molnar
parent c083eff324
commit 2b00d9031e
1 changed files with 2 additions and 2 deletions
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4
arch/x86/mm/pti.c
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@@ -185,7 +185,7 @@ static p4d_t *pti_user_pagetable_walk_p4d(unsigned long address)
set_pgd(pgd, __pgd(_KERNPG_TABLE | __pa(new_p4d_page)));
}
BUILD_BUG_ON(pgd_leaf(*pgd) != 0);
BUILD_BUG_ON(pgd_leaf(*pgd));
return p4d_offset(pgd, address);
}
@@ -206,7 +206,7 @@ static pmd_t *pti_user_pagetable_walk_pmd(unsigned long address)
if (!p4d)
return NULL;
BUILD_BUG_ON(p4d_leaf(*p4d) != 0);
BUILD_BUG_ON(p4d_leaf(*p4d));
if (p4d_none(*p4d)) {
unsigned long new_pud_page = __get_free_page(gfp);
if (WARN_ON_ONCE(!new_pud_page))