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| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2020-02-28 11:32:01 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2020-03-28 12:46:12 +0100 |
| commit | 6a3eb35e56b3308966945b76ec1dfbc18537feef (patch) | |
| tree | 2a10a11c9f08507830ebad5b4982cd1bbe4737ae /arch/s390/include/asm/mmu.h | |
| parent | b2745655be3658cd422ba2b07cf19eb64e0c0eaf (diff) | |
| download | linux-next-6a3eb35e56b3308966945b76ec1dfbc18537feef.tar.gz | |
s390/mm: remove page table downgrade support
This update consolidates page table handling code. Because
there are hardly any 31-bit binaries left we do not need to
optimize for that.
No extra efforts are needed to ensure that a compat task does
not map anything above 2GB. The TASK_SIZE limit for 31-bit
tasks is 2GB already and the generic code does check that a
resulting map address would not surpass that limit.
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/mmu.h')
| -rw-r--r-- | arch/s390/include/asm/mmu.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h index bcfb6371086f..a8418e1379eb 100644 --- a/arch/s390/include/asm/mmu.h +++ b/arch/s390/include/asm/mmu.h @@ -32,8 +32,6 @@ typedef struct { unsigned int uses_cmm:1; /* The gmaps associated with this context are allowed to use huge pages. */ unsigned int allow_gmap_hpage_1m:1; - /* The mmu context is for compat task */ - unsigned int compat_mm:1; } mm_context_t; #define INIT_MM_CONTEXT(name) \ |