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authorFrans Kaashoek <[email protected]>2019-07-22 15:38:08 -0400
committerFrans Kaashoek <[email protected]>2019-07-22 15:38:08 -0400
commitb2e9c8eea5d4f4edb43ae7be9e15986dbfce5b95 (patch)
tree22f78e4caee4b4481d30a1b83acd13b84841a06e /kernel/defs.h
parent38b430687cc248d7d2928e3b7cedf9d220b96013 (diff)
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Clear U bit for second stack page so that it functions as a guard page
Diffstat (limited to 'kernel/defs.h')
-rw-r--r--kernel/defs.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/defs.h b/kernel/defs.h
index 3172cb3..fb2672e 100644
--- a/kernel/defs.h
+++ b/kernel/defs.h
@@ -192,9 +192,10 @@ void unmappages(pagetable_t, uint64, uint64, int);
uint64 walkaddr(pagetable_t, uint64);
int copyout(pagetable_t, uint64, char *, uint64);
int copyin(pagetable_t, char *, uint64, uint64);
-int copyinstr(pagetable_t pagetable, char *dst, uint64 srcva, uint64 max);
+int copyinstr(pagetable_t, char *, uint64, uint64);
char* map_kstack();
uint64 kernelpa(uint64);
+void clearpteu(pagetable_t, uint64);
// plic.c
void plicinit(void);