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https://github.com/edk2-porting/linux-next.git
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0fb1d9bcbc
After TASK_SIZE now gives the current size of the address space the upgrade of a 64 bit process from 3 to 4 levels of page table needs to use the arch_mmap_check hook to catch large mmap lengths. The get_unmapped_area* functions need to check for -ENOMEM from the arch_get_unmapped_area*, upgrade the page table and retry. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
31 lines
927 B
C
31 lines
927 B
C
/*
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* include/asm-s390/mman.h
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*
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* S390 version
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*
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* Derived from "include/asm-i386/mman.h"
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*/
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#ifndef __S390_MMAN_H__
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#define __S390_MMAN_H__
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#include <asm-generic/mman.h>
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#define MAP_GROWSDOWN 0x0100 /* stack-like segment */
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#define MAP_DENYWRITE 0x0800 /* ETXTBSY */
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#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
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#define MAP_LOCKED 0x2000 /* pages are locked */
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#define MAP_NORESERVE 0x4000 /* don't check for reservations */
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#define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */
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#define MAP_NONBLOCK 0x10000 /* do not block on IO */
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#define MCL_CURRENT 1 /* lock all current mappings */
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#define MCL_FUTURE 2 /* lock all future mappings */
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#if defined(__KERNEL__) && !defined(__ASSEMBLY__) && defined(CONFIG_64BIT)
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int s390_mmap_check(unsigned long addr, unsigned long len);
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#define arch_mmap_check(addr,len,flags) s390_mmap_check(addr,len)
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#endif
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#endif /* __S390_MMAN_H__ */
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