From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx48lD+73clMSAWMOIEGn8VNOLBU5vzleNXoIVDCps2WtpCcsUBrqSAmk0pQSS8jkBvuWrYKo ARC-Seal: i=1; a=rsa-sha256; t=1524257549; cv=none; d=google.com; s=arc-20160816; b=b4hzraqmmN2G8iHEEq+5Nx3m6D3zHfI9X+XrsYbm1vMDGPpxvD0y49+tmjHG7LouiS owbo/bhfNEJB/BkY3ku24Sd1wD+U2Ut5xn4QQNxbHPAwVUdtcHhOpLf1m9Gvxd/mptYj WXOoHmT1smfr8G5Ole4Wb98DDc7hZnJFRJezoMg4TjUXeVcB1sTpJKI5E9i3ze5MO7ev BFioDAXwnWGgUf2JWDPR51JYDPbvEpSH54ZE7kmwoYIZ6texvnR24O6s9Ue/NUm8g4WP 5rb1WxlVgFgn+quagp+74MXLQ1c544Bmwn7kzEUM8IGjjIzey/VRicXBgl0LA1933YKH bWHQ== 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=7YHeYJCEDYGa+RYGn1S2AGpxi9R/FREo03jdzoW6Yzk=; b=njO6anPPpM/wIGBvfISy4CRYSwFhZLXRDetRY04hTWOxzz5vQTDMc37+5oRza6uPv6 EmfVZOFWKNml7PRUfYirN0Rnih9pDVis2ayr6yVf4OAx8F0zGis0KPR8L7mcFTcM294Y CL/ldamzDawGGIaL65nytQkio4UJENpO32jj8PeOFAHGozYK4doOAwS4kE6LcGAtUpx6 tIH1Kt/fzOjwkFYyf/SFWPTMOuKHTqW5ujjeJT64cvpoGP78B3SxntmCKNyh2f4fBjYC Po5NuRCqhYGULiEpH7Bw3Ul7KGix9bnbWLQX0OsFd8v5EftE3tkwIne5UBx9gKxzjr8f lUYw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2017-10-26 header.b=SCtgX9YO; 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=SCtgX9YO; 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 v4 0/2] sparc64: Add privileged ADI driver Date: Fri, 20 Apr 2018 14:52:19 -0600 Message-Id: <20180420205221.488589-1-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=563 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1711220000 definitions=main-1804200210 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1598299884417445019?= X-GMAIL-MSGID: =?utf-8?q?1598299884417445019?= 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. v4: * Fixed messed up subject lines. v3: * Really fixed the copyright headers to use SPDX GPL v2. Really. v2: * Simplified copyright headers * 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 | 240 +++++++ 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 | 721 +++++++++++++++++++++ .../selftests/sparc64/drivers/drivers_test.sh | 30 + tools/testing/selftests/sparc64/run.sh | 3 + 10 files changed, 1070 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