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h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XgObANkYFXECzxCScFkjtwE5q4sLYByt+lsLlpzM+ipo2nW/ZBsmSYqyM/NISCXs8 JgLExKMucXFgr1iJxJEWGEb2l1fEBJjbGaYGiValturszHmyJXTYVEQ3crt9QRV0Nx M9Kg/4I4K+nwoHAMJ2ePUKD4eIp0OiTkD5eIM+DpFp5kRWMq9p8+z5JlDWQfptMS8G wms3BflkQ5eR7Zx+KMdkgXBSJ8hMObMbhBclmPTISfq3VphaQVOhacesLqSi5pP3oX Z92xjmYTBcBLIUrzevMA1+0YYxcFvxMElx+Il563T1uigX3jKfaxZovpcxvAV1w1Oi BRdqgHibuxSLQ== From: Tianyi Chen To: Mike Rapoport Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] memblock tests: use physical free for the maximum-address check Date: Thu, 17 Sep 2026 00:11:04 +0800 Message-ID: <20260916161105.2548281-2-hi@tychen.cc> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260916161105.2548281-1-hi@tychen.cc> References: <20260916161105.2548281-1-hi@tychen.cc> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Envelope-From: hi@tychen.cc X-Rspamd-Server: rspam04 X-Rspam-User: X-Stat-Signature: 958z96hpgspy4zq5cxzpa1ohimp84hnm X-Rspamd-Queue-Id: ED770120009 X-HE-Tag: 1789575083-447083 X-HE-Meta: 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 PKmSWIoi BTUEYz5Fgf9OqethcsBrAhIFXmF3GF6jlynWa1Jr4BWs6/KUqu0DHOPEbArAAjSPJakredSk0TVsk5R7qnyAKjb9wDzi+cp1SohRuXXptNzGXH9EhGuhA2e55y/+Z6OM9OSG5ZqjEAafSzo3szkoPLx22jjClXc7zw64KcsMTJuG/Hm/5v7TESx+gF/3GsKilwtFCXnMiZ1OYPMXgJdPwpLJiDhqaZQAgYAbA80X3d37D+8Wk4DF9Y4dCPDK4zq1tjRKptH6gmDdc+qr/7b07m+L/j1ufUk1efMTv07lJ029PpYSUY0dmi0NKqKAEeQ+ChtRSgOxzbFTLK1cqthYsTxdVy+pXEStxbNKD Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 --- 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