From: Catalin Marinas <catalin.marinas@arm.com>
To: Amit Daniel Kachhap <amit.kachhap@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
Shuah Khan <shuah@kernel.org>, Will Deacon <will@kernel.org>,
Vincenzo Frascino <Vincenzo.Frascino@arm.com>,
Gabor Kertesz <gabor.kertesz@arm.com>
Subject: Re: [PATCH 1/6] kselftest/arm64: Add utilities and a test to validate mte memory
Date: Mon, 21 Sep 2020 12:36:34 +0100 [thread overview]
Message-ID: <20200921113633.GB13882@gaia> (raw)
In-Reply-To: <20200901092719.9918-2-amit.kachhap@arm.com>
On Tue, Sep 01, 2020 at 02:57:14PM +0530, Amit Daniel Kachhap wrote:
> diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c
> new file mode 100644
> index 000000000000..ac311919567d
> --- /dev/null
> +++ b/tools/testing/selftests/arm64/mte/mte_common_util.c
> @@ -0,0 +1,374 @@
> +// SPDX-License-Identifier: GPL-2.0
> +// Copyright (C) 2020 ARM Limited
> +
> +#include <fcntl.h>
> +#include <sched.h>
> +#include <signal.h>
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <unistd.h>
> +
> +#include <linux/auxvec.h>
> +#include <sys/auxv.h>
> +#include <sys/mman.h>
> +#include <sys/prctl.h>
> +
> +#include <asm/hwcap.h>
> +
> +#include "kselftest.h"
> +#include "mte_common_util.h"
> +#include "mte_def.h"
> +
> +/* The temp file must be created in a tmpfs filesystem */
> +#ifdef ANDROID
> +# define TEMPFILENAME "/storage/tmp_XXXXXX"
> +#else
> +# define TEMPFILENAME "/tmp/tmp_XXXXXX"
> +#endif
That's not guaranteed to be tmpfs (it's not on my Debian install). I
think you'd have a better chance with /dev/shm/tmp_XXXXXX.
--
Catalin
WARNING: multiple messages have this Message-ID (diff)
From: Catalin Marinas <catalin.marinas@arm.com>
To: Amit Daniel Kachhap <amit.kachhap@arm.com>
Cc: Shuah Khan <shuah@kernel.org>,
linux-kernel@vger.kernel.org,
Gabor Kertesz <gabor.kertesz@arm.com>,
linux-kselftest@vger.kernel.org,
Vincenzo Frascino <Vincenzo.Frascino@arm.com>,
Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/6] kselftest/arm64: Add utilities and a test to validate mte memory
Date: Mon, 21 Sep 2020 12:36:34 +0100 [thread overview]
Message-ID: <20200921113633.GB13882@gaia> (raw)
In-Reply-To: <20200901092719.9918-2-amit.kachhap@arm.com>
On Tue, Sep 01, 2020 at 02:57:14PM +0530, Amit Daniel Kachhap wrote:
> diff --git a/tools/testing/selftests/arm64/mte/mte_common_util.c b/tools/testing/selftests/arm64/mte/mte_common_util.c
> new file mode 100644
> index 000000000000..ac311919567d
> --- /dev/null
> +++ b/tools/testing/selftests/arm64/mte/mte_common_util.c
> @@ -0,0 +1,374 @@
> +// SPDX-License-Identifier: GPL-2.0
> +// Copyright (C) 2020 ARM Limited
> +
> +#include <fcntl.h>
> +#include <sched.h>
> +#include <signal.h>
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <unistd.h>
> +
> +#include <linux/auxvec.h>
> +#include <sys/auxv.h>
> +#include <sys/mman.h>
> +#include <sys/prctl.h>
> +
> +#include <asm/hwcap.h>
> +
> +#include "kselftest.h"
> +#include "mte_common_util.h"
> +#include "mte_def.h"
> +
> +/* The temp file must be created in a tmpfs filesystem */
> +#ifdef ANDROID
> +# define TEMPFILENAME "/storage/tmp_XXXXXX"
> +#else
> +# define TEMPFILENAME "/tmp/tmp_XXXXXX"
> +#endif
That's not guaranteed to be tmpfs (it's not on my Debian install). I
think you'd have a better chance with /dev/shm/tmp_XXXXXX.
--
Catalin
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next prev parent reply other threads:[~2020-09-21 11:36 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-01 9:27 [PATCH 0/6] kselftest: arm64/mte: Tests for user-space MTE Amit Daniel Kachhap
2020-09-01 9:27 ` Amit Daniel Kachhap
2020-09-01 9:27 ` [PATCH 1/6] kselftest/arm64: Add utilities and a test to validate mte memory Amit Daniel Kachhap
2020-09-01 9:27 ` Amit Daniel Kachhap
2020-09-21 11:36 ` Catalin Marinas [this message]
2020-09-21 11:36 ` Catalin Marinas
2020-09-21 14:18 ` Catalin Marinas
2020-09-21 14:18 ` Catalin Marinas
2020-09-21 16:43 ` Catalin Marinas
2020-09-21 16:43 ` Catalin Marinas
2020-09-01 9:27 ` [PATCH 2/6] kselftest/arm64: Verify mte tag inclusion via prctl Amit Daniel Kachhap
2020-09-01 9:27 ` Amit Daniel Kachhap
2020-09-01 9:27 ` [PATCH 3/6] kselftest/arm64: Check forked child mte memory accessibility Amit Daniel Kachhap
2020-09-01 9:27 ` Amit Daniel Kachhap
2020-09-01 9:27 ` [PATCH 4/6] kselftest/arm64: Verify all different mmap MTE options Amit Daniel Kachhap
2020-09-01 9:27 ` Amit Daniel Kachhap
2020-09-01 9:27 ` [PATCH 5/6] kselftest/arm64: Verify KSM page merge for MTE pages Amit Daniel Kachhap
2020-09-01 9:27 ` Amit Daniel Kachhap
2020-09-01 9:27 ` [PATCH 6/6] kselftest/arm64: Check mte tagged user address in kernel Amit Daniel Kachhap
2020-09-01 9:27 ` Amit Daniel Kachhap
2020-09-22 10:41 ` Catalin Marinas
2020-09-22 10:41 ` Catalin Marinas
2020-09-23 7:06 ` Amit Kachhap
2020-09-23 7:06 ` Amit Kachhap
2020-09-23 8:49 ` Catalin Marinas
2020-09-23 8:49 ` Catalin Marinas
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