Make end page exclusive when computing the end page for the ramdisk

jasoncouture · phil-opp · jasoncouture · commit e0c3584b1436 · 2023-01-09T11:37:31.000-05:00
Co-authored-by: Philipp Oppermann &lt;dev@phil-opp.com&gt;
diff --git a/common/src/lib.rs b/common/src/lib.rs
@@ -298,7 +298,7 @@ where
         let physical_address = PhysAddr::new(ramdisk_address);
         let ramdisk_physical_start_page: PhysFrame<Size4KiB> =
             PhysFrame::containing_address(physical_address);
-        let ramdisk_page_count = system_info.ramdisk_len / Size4KiB::SIZE;
+        let ramdisk_page_count = (system_info.ramdisk_len - 1) / Size4KiB::SIZE;
         let ramdisk_physical_end_page = ramdisk_physical_start_page + ramdisk_page_count;
         let start_page = Page::from_start_address(ramdisk_address_start)
             .expect("the ramdisk start address must be page aligned");
