From 6b379e4707d693bb383f51647f66ec5471d26979 Mon Sep 17 00:00:00 2001 From: Robert Morris Date: Mon, 22 Jul 2019 14:54:40 -0400 Subject: -MD and TRAPFRAME --- kernel/proc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'kernel/proc.c') diff --git a/kernel/proc.c b/kernel/proc.c index b9babed..d10c952 100644 --- a/kernel/proc.c +++ b/kernel/proc.c @@ -156,8 +156,8 @@ proc_pagetable(struct proc *p) mappages(pagetable, TRAMPOLINE, PGSIZE, (uint64)trampout, PTE_R | PTE_X); - // map the trapframe, for trampoline.S. - mappages(pagetable, (TRAMPOLINE - PGSIZE), PGSIZE, + // map the trapframe just below TRAMPOLINE, for trampoline.S. + mappages(pagetable, TRAPFRAME, PGSIZE, (uint64)(p->tf), PTE_R | PTE_W); return pagetable; @@ -169,7 +169,7 @@ void proc_freepagetable(pagetable_t pagetable, uint64 sz) { unmappages(pagetable, TRAMPOLINE, PGSIZE, 0); - unmappages(pagetable, TRAMPOLINE-PGSIZE, PGSIZE, 0); + unmappages(pagetable, TRAPFRAME, PGSIZE, 0); if(sz > 0) uvmfree(pagetable, sz); } -- cgit v1.2.3