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have fork() fail, not panic, if not enough phys mem

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This commit is contained in:
Robert Morris 2019-07-01 17:46:06 -04:00
parent 18e76a6c47
commit abfe9999f4
5 changed files with 94 additions and 16 deletions
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kernel/defs.h
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@ -185,7 +185,7 @@ pagetable_t uvmcreate(void);
void uvminit(pagetable_t, uchar *, uint);
uint64 uvmalloc(pagetable_t, uint64, uint64);
uint64 uvmdealloc(pagetable_t, uint64, uint64);
void uvmcopy(pagetable_t, pagetable_t, uint64);
int uvmcopy(pagetable_t, pagetable_t, uint64);
void uvmfree(pagetable_t, uint64);
void mappages(pagetable_t, uint64, uint64, uint64, int);
void unmappages(pagetable_t, uint64, uint64, int);