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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2015-02-12 15:08:27 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-03-25 13:49:33 +0300 |
| commit | 5a79859ae0f35d25c67a03e82bf0c80592f16a39 (patch) | |
| tree | 37264d49f069812f19ced94e6ae171814fb7e498 /arch/s390/include/asm/tlb.h | |
| parent | 1833c9f647e9bda1cd24653ff8f9c207b5f5b911 (diff) | |
| download | linux-5a79859ae0f35d25c67a03e82bf0c80592f16a39.tar.xz | |
s390: remove 31 bit support
Remove the 31 bit support in order to reduce maintenance cost and
effectively remove dead code. Since a couple of years there is no
distribution left that comes with a 31 bit kernel.
The 31 bit kernel also has been broken since more than a year before
anybody noticed. In addition I added a removal warning to the kernel
shown at ipl for 5 minutes: a960062e5826 ("s390: add 31 bit warning
message") which let everybody know about the plan to remove 31 bit
code. We didn't get any response.
Given that the last 31 bit only machine was introduced in 1999 let's
remove the code.
Anybody with 31 bit user space code can still use the compat mode.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/tlb.h')
| -rw-r--r-- | arch/s390/include/asm/tlb.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h index 06d8741ad6f4..7a92e69c50bc 100644 --- a/arch/s390/include/asm/tlb.h +++ b/arch/s390/include/asm/tlb.h @@ -118,12 +118,10 @@ static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, unsigned long address) { -#ifdef CONFIG_64BIT if (tlb->mm->context.asce_limit <= (1UL << 31)) return; pgtable_pmd_page_dtor(virt_to_page(pmd)); tlb_remove_table(tlb, pmd); -#endif } /* @@ -136,11 +134,9 @@ static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, unsigned long address) { -#ifdef CONFIG_64BIT if (tlb->mm->context.asce_limit <= (1UL << 42)) return; tlb_remove_table(tlb, pud); -#endif } #define tlb_start_vma(tlb, vma) do { } while (0) |