Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH] powerpc/book3e: drop BUG_ON() in map_kernel_page() | Date | Thu, 28 Mar 2019 13:03:45 +0000 (UTC) |
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early_alloc_pgtable() never returns NULL as it panics on failure.
This patch drops the three BUG_ON() which check the non nullity of early_alloc_pgtable() returned value.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/mm/pgtable-book3e.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/arch/powerpc/mm/pgtable-book3e.c b/arch/powerpc/mm/pgtable-book3e.c index 1032ef7aaf62..390a6d0b216d 100644 --- a/arch/powerpc/mm/pgtable-book3e.c +++ b/arch/powerpc/mm/pgtable-book3e.c @@ -98,20 +98,17 @@ int map_kernel_page(unsigned long ea, unsigned long pa, pgprot_t prot) #ifndef __PAGETABLE_PUD_FOLDED if (pgd_none(*pgdp)) { pudp = early_alloc_pgtable(PUD_TABLE_SIZE); - BUG_ON(pudp == NULL); pgd_populate(&init_mm, pgdp, pudp); } #endif /* !__PAGETABLE_PUD_FOLDED */ pudp = pud_offset(pgdp, ea); if (pud_none(*pudp)) { pmdp = early_alloc_pgtable(PMD_TABLE_SIZE); - BUG_ON(pmdp == NULL); pud_populate(&init_mm, pudp, pmdp); } pmdp = pmd_offset(pudp, ea); if (!pmd_present(*pmdp)) { ptep = early_alloc_pgtable(PAGE_SIZE); - BUG_ON(ptep == NULL); pmd_populate_kernel(&init_mm, pmdp, ptep); } ptep = pte_offset_kernel(pmdp, ea); -- 2.13.3
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