From 6de0381d619f01777d84cbcd3affa96ad376c2e1 Mon Sep 17 00:00:00 2001
From: Robert Morris <rtm@csail.mit.edu>
Date: Tue, 10 Aug 2021 07:12:41 -0400
Subject: check for alignment just once
---
kernel/exec.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
(limited to 'kernel')
diff --git a/kernel/exec.c b/kernel/exec.c
index 0e8762f..26fc8ec 100644
--- a/kernel/exec.c
+++ b/kernel/exec.c
@@ -52,7 +52,7 @@ exec(char *path, char **argv)
if((sz1 = uvmalloc(pagetable, sz, ph.vaddr + ph.memsz)) == 0)
goto bad;
sz = sz1;
- if(ph.vaddr % PGSIZE != 0)
+ if((ph.vaddr % PGSIZE) != 0)
goto bad;
if(loadseg(pagetable, ph.vaddr, ip, ph.off, ph.filesz) < 0)
goto bad;
@@ -138,9 +138,6 @@ loadseg(pagetable_t pagetable, uint64 va, struct inode *ip, uint offset, uint sz
uint i, n;
uint64 pa;
- if((va % PGSIZE) != 0)
- panic("loadseg: va must be page aligned");
-
for(i = 0; i < sz; i += PGSIZE){
pa = walkaddr(pagetable, va + i);
if(pa == 0)
--
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