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| author |   Catalin Marinas <catalin.marinas@arm.com> | 2015-01-29 17:33:35 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2015-01-29 17:33:35 +0000 |
| commit | 41089357e1874559458f672b9591436ffd3a12e9 (patch) | |
| tree | 2295397f0e5d96a0d6929fe5f0935177257d54a5 /arch/arm64 | |
| parent | arm64: Avoid breakage caused by .altmacro in fpsimd save/restore macros (diff) | |
| download | linux-dev-41089357e1874559458f672b9591436ffd3a12e9.tar.xz linux-dev-41089357e1874559458f672b9591436ffd3a12e9.zip | |
arm64: Fix section mismatch on alloc_init_p[mu]d()
Commit 523d6e9fae93 (arm64:mm: free the useless initial page table)
introduced a BUG_ON checking for the allocation type but it was
referring the early_alloc() function in the __init section. This patch
changes the check to slab_is_available() and also relaxes the BUG to a
WARN_ON_ONCE.
Reported-by: Will Deacon <will.deacon@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/mm/mmu.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 2eeac10aa0cf..c6daaf6c6f97 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -26,6 +26,7 @@ #include <linux/memblock.h> #include <linux/fs.h> #include <linux/io.h> +#include <linux/slab.h> #include <linux/stop_machine.h> #include <asm/cputype.h> @@ -159,8 +160,8 @@ static void alloc_init_pmd(struct mm_struct *mm, pud_t *pud, flush_tlb_all(); if (pmd_table(old_pmd)) { phys_addr_t table = __pa(pte_offset_map(&old_pmd, 0)); - BUG_ON(alloc != early_alloc); - memblock_free(table, PAGE_SIZE); + if (!WARN_ON_ONCE(slab_is_available())) + memblock_free(table, PAGE_SIZE); } } } else { @@ -220,8 +221,8 @@ static void alloc_init_pud(struct mm_struct *mm, pgd_t *pgd, flush_tlb_all(); if (pud_table(old_pud)) { phys_addr_t table = __pa(pmd_offset(&old_pud, 0)); - BUG_ON(alloc != early_alloc); - memblock_free(table, PAGE_SIZE); + if (!WARN_ON_ONCE(slab_is_available())) + memblock_free(table, PAGE_SIZE); } } } else { |