Imbus/xv6-riscv-kernel
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inaccessible page under the user stack page, to help exec deal w/ too-large args

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Robert Morris 2011-09-01 13:25:34 -04:00
parent 62e3b8a92c
commit 371ab7fa96
4 changed files with 21 additions and 4 deletions
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defs.h
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@ -176,6 +176,7 @@ pde_t* copyuvm(pde_t*, uint);
void switchuvm(struct proc*);
void switchkvm(void);
int copyout(pde_t*, uint, void*, uint);
void clear_pte_u(pde_t *pgdir, char *uva);
// number of elements in fixed-size array
#define NELEM(x) (sizeof(x)/sizeof((x)[0]))