+ * test_suite_setup - Set up the VMA layout for VMA count testing. + * + * Sets up the following VMA layout: + * + * +----- base_addr + * | + * V + * +--------------+----------------------+--------------+----------------+--------------+----------------+--------------+-----+----------------+--------------+ + * | Guard Page | | Guard Page | Extra Map 1 | Unmapped Gap | Extra Map 2 | Unmapped Gap | ... | Extra Map N | Unmapped Gap | + * | (unmapped) | TEST_AREA | (unmapped) | (mapped page) | (1 page) | (mapped page) | (1 page) | ... | (mapped page) | (1 page) | + * | (1 page) | (unmapped, 3 pages) | (1 page) | (1 page) | | (1 page) | | | (1 page) | | + * +--------------+----------------------+--------------+----------------+--------------+----------------+--------------+-----+----------------+--------------+ + * ^ ^ ^ ^ ^ + * | | | | | + * +--GUARD_SIZE--+ | +-- EXTRA_MAPS points here Sufficient EXTRA_MAPS to ---+ + * (PAGE_SIZE) | | reach MAX_VMA_COUNT + * | | + * +--- TEST_AREA_SIZE ---+ + * | (3 * PAGE_SIZE) | + * ^ + * | + * +-- TEST_AREA starts here + *
Just wondering if we could find a different name than "guard page" here, to not confuse stuff with guard ptes
Will the current "guard page" we a valid vma or just a hole? -- Cheers David / dhildenb
