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-rw-r--r--kernel/vm.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/vm.c b/kernel/vm.c
index c5da0c1..5e0b2aa 100644
--- a/kernel/vm.c
+++ b/kernel/vm.c
@@ -67,9 +67,9 @@ kvminithart()
// A 64-bit virtual address is split into five fields:
// 39..63 -- must be zero.
// 30..38 -- 9 bits of level-2 index.
-// 21..39 -- 9 bits of level-1 index.
+// 21..29 -- 9 bits of level-1 index.
// 12..20 -- 9 bits of level-0 index.
-// 0..12 -- 12 bits of byte offset within the page.
+// 0..11 -- 12 bits of byte offset within the page.
static pte_t *
walk(pagetable_t pagetable, uint64 va, int alloc)
{