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修正页表中的映射错误

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This commit is contained in:
KAAAsS 2021-05-15 00:11:01 +08:00
parent 61fad2c531
commit 830283078f
Signed by: KAAAsS
GPG Key ID: D56625F3E671882F
3 changed files with 4 additions and 2 deletions
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2
lab2/kernel/mm/page_table.c
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@ -220,7 +220,7 @@ int map_range_in_pgtbl(vaddr_t * pgtbl, vaddr_t va, paddr_t pa,
// 创建一页
cur_ptp = (ptp_t *) pgtbl;
for (cur_level = 0; cur_level < 4; cur_level++) {
page_type = get_next_ptp(cur_ptp, cur_level, va, &next_ptp, &entry, true);
page_type = get_next_ptp(cur_ptp, cur_level, va_cur, &next_ptp, &entry, true);
if (page_type < 0) {
// 无法映射
return page_type;

2
lab3/kernel/mm/page_table.c
View File

@ -220,7 +220,7 @@ int map_range_in_pgtbl(vaddr_t * pgtbl, vaddr_t va, paddr_t pa,
// 创建一页
cur_ptp = (ptp_t *) pgtbl;
for (cur_level = 0; cur_level < 4; cur_level++) {
page_type = get_next_ptp(cur_ptp, cur_level, va, &next_ptp, &entry, true);
page_type = get_next_ptp(cur_ptp, cur_level, va_cur, &next_ptp, &entry, true);
if (page_type < 0) {
// 无法映射
return page_type;

2
note.org
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@ -112,6 +112,8 @@ LR
没啥特别的。不过目前只实现了用户空间的 2k 页分配。
好家伙，循环里面忘记用 va_cur 用了 va。但是测试用例竟然过了 →_→
*** 练习3
boot/mmu.c:L80-106 映射了 KBASE~KBASE+256M