From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx48jBWWZv79gK++pL2/k/Bwj7fDjY/NB5Ig0KR/mjSnxsX8X6Dp4or+qJ55RRao2Z2f+28ip ARC-Seal: i=1; a=rsa-sha256; t=1524245656; cv=none; d=google.com; s=arc-20160816; b=bTih16B+Gf6/61vWiKlVunRFow7O7jtUN0O7N2Uz+XnvfZz2qGShpfNaOCALXEkdzJ PFtgidDtIZtAM1iC7+Qbt5/D092UtPraQpe0GMFk8nRiUDkviJeF4fkdl0SpJhmQkHjc Blb0xdLL7MQuDDQoBQObK4ESl7bLMLjusIYjP77dOa8DNgxzPEBOuMkrh5Osv0ayrFQQ IaSIhHPRRj2qWZrQjYi8r5M5NEw16XPqQ9QCPNQmtwIGr+htsZDafgpE2vapnyk6+0pe vfEinfgJfdJDuZlLElER9+MRQfY8uCUS5D+DC3bNo41f1m7IuuAK19Oi06K+0bSUMZ6A C/UQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=message-id:date:subject:cc:to:from:dkim-signature :arc-authentication-results; bh=0dE6V++mi6CMeOaZGKFPjDZsTzurcvaHup+qlbP4hoM=; b=jE4Fxy3F9r/EXBf3go1cV3lRbeOYPVJ/UXbC81fqTLN0ALxCXTqD7+Vbs2M30LMTpS gvRoURkswft1NwPBJSgYtsPWR7LFMM7y2dBMYhXW1L07npeAD1ySUlBt/VpBiEEeF5d2 sIy4JZVEtJGBaO0V81f6/ToGLhOL0sB5z9lKUP90dFEwQigjMdzxgt1DT1Mc5HvxSKnj euFIwu9xsZGUXxKHHdshvFzUiq2O2zOJk6qMb8NtFS6a8vWks6fE8AwVGKTX1unc3q6q HJmzuIk7zWYS6Y+ZvbpnsrtOPYGh/tbB8oWHDYyL0ELT2eWDPo8iAonIgehC/U0ym5ec dAPw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2017-10-26 header.b=kFgsisFD; spf=pass (google.com: domain of tom.hromatka@oracle.com designates 156.151.31.86 as permitted sender) smtp.mailfrom=tom.hromatka@oracle.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2017-10-26 header.b=kFgsisFD; spf=pass (google.com: domain of tom.hromatka@oracle.com designates 156.151.31.86 as permitted sender) smtp.mailfrom=tom.hromatka@oracle.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com From: Tom Hromatka To: davem@davemloft.net Cc: sparclinux@vger.kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, tom.hromatka@oracle.com, shuah@kernel.org, linux-kselftest@vger.kernel.org, allen.pais@oracle.com, khalid.aziz@oracle.com, shannon.nelson@oracle.com, anthony.yznaga@oracle.com Subject: [PATCH v2 0/2] sparc64: Add privileged ADI driver Date: Fri, 20 Apr 2018 11:34:04 -0600 Message-Id: <20180420173406.485815-1-tom.hromatka@oracle.com> X-Mailer: git-send-email 2.15.0 X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8869 signatures=668698 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=593 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1804200175 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1598287413064530122?= X-GMAIL-MSGID: =?utf-8?q?1598287413064530122?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: ADI is a feature supported on SPARC M7 and newer processors to allow hardware to catch rogue accesses to memory. ADI is supported for data fetches only and not instruction fetches. An app can enable ADI on its data pages, set version tags on them and use versioned addresses to access the data pages. Upper bits of the address contain the version tag. On M7 processors, upper four bits (bits 63-60) contain the version tag. If a rogue app attempts to access ADI enabled data pages, its access is blocked and processor generates an exception. Please see Documentation/sparc/adi.txt for further details. This patchset implements a char driver to read/write ADI versions from privileged user space processes. Intended consumers are makedumpfile and crash. v2: * Simplified copyright headers * Updated copyright headers to use GPL v3 or later * Completely reworked sparc64 selftests Makefiles. Used the android selftests Makefiles as an example * Added run.sh and drivers_test.sh to the sparc64 selftest directory. Used bpf/test_kmod.sh and the android selftests as examples * Minor cleanups in the selftest adi-test.c * Added calls to ksft_test_*() in the adi-test.c Tom Hromatka (2): char: sparc64: Add privileged ADI driver selftests: sparc64: char: Selftest for privileged ADI driver drivers/char/Kconfig | 12 + drivers/char/Makefile | 1 + drivers/char/adi.c | 251 +++++++ tools/testing/selftests/Makefile | 1 + tools/testing/selftests/sparc64/Makefile | 46 ++ tools/testing/selftests/sparc64/drivers/.gitignore | 1 + tools/testing/selftests/sparc64/drivers/Makefile | 15 + tools/testing/selftests/sparc64/drivers/adi-test.c | 732 +++++++++++++++++++++ .../selftests/sparc64/drivers/drivers_test.sh | 30 + tools/testing/selftests/sparc64/run.sh | 3 + 10 files changed, 1092 insertions(+) create mode 100644 drivers/char/adi.c create mode 100644 tools/testing/selftests/sparc64/Makefile create mode 100644 tools/testing/selftests/sparc64/drivers/.gitignore create mode 100644 tools/testing/selftests/sparc64/drivers/Makefile create mode 100644 tools/testing/selftests/sparc64/drivers/adi-test.c create mode 100755 tools/testing/selftests/sparc64/drivers/drivers_test.sh create mode 100755 tools/testing/selftests/sparc64/run.sh -- 2.15.0