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-rw-r--r--sys/i386/include/pmap.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/i386/include/pmap.h b/sys/i386/include/pmap.h
index 6274ca7..3edec14 100644
--- a/sys/i386/include/pmap.h
+++ b/sys/i386/include/pmap.h
@@ -95,6 +95,8 @@
* Size of Kernel address space. This is the number of page table pages
* (4MB each) to use for the kernel. 256 pages == 1 Gigabyte.
* This **MUST** be a multiple of 4 (eg: 252, 256, 260, etc).
+ * For PAE, the page table page unit size is 2MB. This means that 512 pages
+ * is 1 Gigabyte. Double everything. It must be a multiple of 8 for PAE.
*/
#ifndef KVA_PAGES
#ifdef PAE
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