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Mon, 25 Mar 2024 05:53:17 +0000 (GMT) Received: from bgray-lenovo-p15.ozlabs.ibm.com (haven.au.ibm.com [9.192.254.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.au.ibm.com (Postfix) with ESMTPSA id E914360442; Mon, 25 Mar 2024 16:53:12 +1100 (AEDT) From: Benjamin Gray To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v3 5/5] powerpc/code-patching: Add boot selftest for data patching Date: Mon, 25 Mar 2024 16:53:02 +1100 Message-ID: <20240325055302.876434-6-bgray@linux.ibm.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240325055302.876434-1-bgray@linux.ibm.com> References: <20240325055302.876434-1-bgray@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: KsTJsG0Z7u85CwSc3KMfAc0HUTAqjvyL X-Proofpoint-GUID: KsTJsG0Z7u85CwSc3KMfAc0HUTAqjvyL X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-03-25_03,2024-03-21_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxscore=0 impostorscore=0 bulkscore=0 adultscore=0 suspectscore=0 spamscore=0 malwarescore=0 phishscore=0 priorityscore=1501 clxscore=1015 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2403210000 definitions=main-2403250030 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Naveen N Rao , Benjamin Gray Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Extend the code patching selftests with some basic coverage of the new data patching variants too. Signed-off-by: Benjamin Gray --- v3: * New in v3 --- arch/powerpc/lib/test-code-patching.c | 36 +++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/arch/powerpc/lib/test-code-patching.c b/arch/powerpc/lib/test-code-patching.c index c44823292f73..e96c48fcd4db 100644 --- a/arch/powerpc/lib/test-code-patching.c +++ b/arch/powerpc/lib/test-code-patching.c @@ -347,6 +347,41 @@ static void __init test_prefixed_patching(void) check(!memcmp(iptr, expected, sizeof(expected))); } +static void __init test_data_patching(void) +{ + void *buf; + u32 *addr32; + + buf = vzalloc(PAGE_SIZE); + check(buf); + if (!buf) + return; + + addr32 = buf + 128; + + addr32[1] = 0xA0A1A2A3; + addr32[2] = 0xB0B1B2B3; + + patch_uint(&addr32[1], 0xC0C1C2C3); + + check(addr32[0] == 0); + check(addr32[1] == 0xC0C1C2C3); + check(addr32[2] == 0xB0B1B2B3); + check(addr32[3] == 0); + + patch_ulong(&addr32[1], 0xD0D1D2D3); + + check(addr32[0] == 0); + *(unsigned long *)(&addr32[1]) = 0xD0D1D2D3; + + if (!IS_ENABLED(CONFIG_PPC64)) + check(addr32[2] == 0xB0B1B2B3); + + check(addr32[3] == 0); + + vfree(buf); +} + static int __init test_code_patching(void) { pr_info("Running code patching self-tests ...\n"); @@ -356,6 +391,7 @@ static int __init test_code_patching(void) test_create_function_call(); test_translate_branch(); test_prefixed_patching(); + test_data_patching(); return 0; }