From patchwork Thu Jul 18 05:25:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dev Jain X-Patchwork-Id: 813571 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 32E38800; Thu, 18 Jul 2024 05:25:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721280323; cv=none; b=KKHuMAylwAGYq9C1CFVb5FZnAkammQIyRphiAyfp/nmFB4Ou/vtkGPUNH+Q6cKNx86bNNiwftFwEBYlUhS08grMOyrCZCUEQyTWEhxDguSz5vSHHmnotegk+7dbfiUWVgHALX7NhTPGIYQHFujTfZkR3RmBtsdFoAPws/3on37c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721280323; c=relaxed/simple; bh=LYzfa7TtiK5UVAdOzXGtjV/cw1DkMVWzYJHOLDgebsc=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=SuEe2jtVw3vBbJDBbFj7ivQJPHz8NObPIecnFez7QxnjVk2l4N1VUATpuLDku18xuJ0hj/uF+xffJ91T9mEuB4N+lOMw1wpWhIm3hIbonFnTozoPRYLAF8Fyts6tkNnD6jQKqcKCNOsu5YG0vZM7VLkgSNXHCsGp5FoPLIsf2SI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 728E91063; Wed, 17 Jul 2024 22:25:44 -0700 (PDT) Received: from e116581.blr.arm.com (e116581.arm.com [10.162.42.20]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id BE6013F766; Wed, 17 Jul 2024 22:25:15 -0700 (PDT) From: Dev Jain To: akpm@linux-foundation.org, shuah@kernel.org Cc: linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, Anshuman.Khandual@arm.com, ryan.roberts@arm.com, broonie@kernel.org, Dev Jain Subject: [PATCH v2] selftests/mm: Skip test for non-LPA2 and non-LVA systems Date: Thu, 18 Jul 2024 10:55:04 +0530 Message-Id: <20240718052504.356517-1-dev.jain@arm.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Post my improvement of the test: https://lore.kernel.org/all/20240522070435.773918-3-dev.jain@arm.com/ The test begins to fail on 4k and 16k pages, on non-LPA2 systems. To reduce noise in the CI systems, let us skip the test when higher address space is not implemented. v1->v2: - Guard with ifdeffery to prevent compiler warning on other arches Signed-off-by: Dev Jain Reviewed-by: Ryan Roberts --- The patch applies on linux-next. tools/testing/selftests/mm/va_high_addr_switch.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/va_high_addr_switch.c b/tools/testing/selftests/mm/va_high_addr_switch.c index fa7eabfaf841..896b3f73fc53 100644 --- a/tools/testing/selftests/mm/va_high_addr_switch.c +++ b/tools/testing/selftests/mm/va_high_addr_switch.c @@ -293,6 +293,20 @@ static int run_test(struct testcase *test, int count) return ret; } +#ifdef __aarch64__ +/* Check if userspace VA > 48 bits */ +static int high_address_present(void) +{ + void *ptr = mmap((void *)(1UL << 50), 1, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0); + if (ptr == MAP_FAILED) + return 0; + + munmap(ptr, 1); + return 1; +} +#endif + static int supported_arch(void) { #if defined(__powerpc64__) @@ -300,7 +314,7 @@ static int supported_arch(void) #elif defined(__x86_64__) return 1; #elif defined(__aarch64__) - return 1; + return high_address_present(); #else return 0; #endif