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Tue, 21 Nov 2023 22:03:04 GMT Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C129F2005A; Tue, 21 Nov 2023 22:03:04 +0000 (GMT) Received: from smtpav06.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5885520065; Tue, 21 Nov 2023 22:03:03 +0000 (GMT) Received: from heavy.boeblingen.de.ibm.com (unknown [9.179.23.98]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 21 Nov 2023 22:03:03 +0000 (GMT) From: Ilya Leoshkevich To: Alexander Gordeev , Alexander Potapenko , Andrew Morton , Christoph Lameter , David Rientjes , Heiko Carstens , Joonsoo Kim , Marco Elver , Masami Hiramatsu , Pekka Enberg , Steven Rostedt , Vasily Gorbik , Vlastimil Babka Cc: Christian Borntraeger , Dmitry Vyukov , Hyeonggon Yoo <42.hyeyoo@gmail.com>, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Mark Rutland , Roman Gushchin , Sven Schnelle , Ilya Leoshkevich Subject: [PATCH v2 32/33] s390: Implement the architecture-specific kmsan functions Date: Tue, 21 Nov 2023 23:01:26 +0100 Message-ID: <20231121220155.1217090-33-iii@linux.ibm.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231121220155.1217090-1-iii@linux.ibm.com> References: <20231121220155.1217090-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: IyGjYQWbcfWcSL9WVWtmI84_83T8peyH X-Proofpoint-ORIG-GUID: NS1pbt6R8Eh77F39tcogaOWXxwBiSuqE X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-21_12,2023-11-21_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 priorityscore=1501 mlxscore=0 adultscore=0 bulkscore=0 mlxlogscore=783 phishscore=0 clxscore=1015 malwarescore=0 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311210172 X-Rspamd-Queue-Id: 53E728001A X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: tc57t7x1jtxqtesrrmdsubr4cr4t4j6y X-HE-Tag: 1700604195-487919 X-HE-Meta: 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 50+fBgYW UtYPWAipFBdvMpJhT1ZqSFJ6Ccxmx2toy/mNVQlbppxtIeTgvxo0v1VbWIABBYFiLn8ltpVviGq3365p9U6LfAd3COO5HcMWsPufvEcA4qZ6/g/l4xapZ75V69+UHVJvuK2dMk7kiJMtdBE3MT0xNO5fiMFZzM3QRV89tj1F1o79elYCrq9HPyh9AbxFXYSHPraU78ioQzbTNEYFxMyDWnrcp4Q== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000004, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: arch_kmsan_get_meta_or_null() finds the lowcore shadow by querying the prefix and calling kmsan_get_metadata() again. kmsan_virt_addr_valid() delegates to virt_addr_valid(). Signed-off-by: Ilya Leoshkevich --- arch/s390/include/asm/kmsan.h | 36 +++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 arch/s390/include/asm/kmsan.h diff --git a/arch/s390/include/asm/kmsan.h b/arch/s390/include/asm/kmsan.h new file mode 100644 index 000000000000..afec71e9e9ac --- /dev/null +++ b/arch/s390/include/asm/kmsan.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_S390_KMSAN_H +#define _ASM_S390_KMSAN_H + +#include +#include +#include +#include +#include + +#ifndef MODULE + +static inline void *arch_kmsan_get_meta_or_null(void *addr, bool is_origin) +{ + if (addr >= (void *)&S390_lowcore && + addr < (void *)(&S390_lowcore + 1)) { + /* + * Different lowcores accessed via S390_lowcore are described + * by the same struct page. Resolve the prefix manually in + * order to get a distinct struct page. + */ + addr += (void *)lowcore_ptr[raw_smp_processor_id()] - + (void *)&S390_lowcore; + return kmsan_get_metadata(addr, is_origin); + } + return NULL; +} + +static inline bool kmsan_virt_addr_valid(void *addr) +{ + return virt_addr_valid(addr); +} + +#endif /* !MODULE */ + +#endif /* _ASM_S390_KMSAN_H */ -- 2.41.0