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authorChristophe Leroy <christophe.leroy@c-s.fr>2019-03-28 13:03:45 +0000
committerMichael Ellerman <mpe@ellerman.id.au>2019-05-02 21:18:57 +1000
commita1ac2a9c4f98482e49305ab5551b7b32f9cac39b (patch)
treea5821463ebb06d372f30253b01d243b1ad00a74b /arch
parentpowerpc/tm: Avoid machine crash on rt_sigreturn() (diff)
downloadlinux-dev-a1ac2a9c4f98482e49305ab5551b7b32f9cac39b.tar.xz
linux-dev-a1ac2a9c4f98482e49305ab5551b7b32f9cac39b.zip
powerpc/book3e: drop BUG_ON() in map_kernel_page()
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> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/mm/pgtable-book3e.c3
1 files changed, 0 insertions, 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);