[PATCH 1/2] memblock tests: use physical free for the maximum-address check

[Tianyi Chen]

With BUILD=32, phys_addr_t remains 64-bit while pointers are 32-bit.
Casting the address near PHYS_ADDR_MAX to void * truncates it before
memblock_free() converts it back with __pa(). The reserved region is
therefore left unchanged and memblock_free_near_max_check() fails.

Use memblock_phys_free() for this synthetic physical range and retain
the checks that freeing past PHYS_ADDR_MAX clips the removed region.

Fixes: 21a233f68afe ("memblock tests: add additional tests for basic api and memblock_alloc")
Assisted-by: LLM
Signed-off-by: Tianyi Chen <hi@xxxxxxxxx>
---
 tools/testing/memblock/tests/basic_api.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/memblock/tests/basic_api.c b/tools/testing/memblock/tests/basic_api.c
index 01e836fba488..dfca0153b6b1 100644
--- a/tools/testing/memblock/tests/basic_api.c
+++ b/tools/testing/memblock/tests/basic_api.c
@@ -2003,7 +2003,7 @@ static int memblock_free_only_region_check(void)
  * Expect the total size of reserved memory to be updated and the counter to
  * not be updated.
  */
-static int memblock_free_near_max_check(void)
+static int memblock_phys_free_near_max_check(void)
 {
 	struct memblock_region *rgn;
 	phys_addr_t total_size;
@@ -2026,7 +2026,7 @@ static int memblock_free_near_max_check(void)
 
 	reset_memblock_regions();
 	memblock_reserve(r1.base, r1.size);
-	memblock_free((void *)r2.base, r2.size);
+	memblock_phys_free(r2.base, r2.size);
 
 	ASSERT_EQ(rgn->base, r1.base);
 	ASSERT_EQ(rgn->size, total_size);
@@ -2114,7 +2114,7 @@ static int memblock_free_checks(void)
 	memblock_free_overlap_bottom_check();
 	memblock_free_within_check();
 	memblock_free_only_region_check();
-	memblock_free_near_max_check();
+	memblock_phys_free_near_max_check();
 	memblock_free_overlap_two_check();
 
 	prefix_pop();
-- 
2.55.0