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Tue, 29 Jul 2025 05:34:23 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D97192004D; Tue, 29 Jul 2025 05:34:22 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5733C20040; Tue, 29 Jul 2025 05:34:17 +0000 (GMT) Received: from aboo.ibm.com.com (unknown [9.150.11.63]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 29 Jul 2025 05:34:17 +0000 (GMT) From: Aboorva Devarajan To: akpm@linux-foundation.org, Liam.Howlett@oracle.com, lorenzo.stoakes@oracle.com, shuah@kernel.org, pfalcato@suse.de, david@redhat.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org Cc: linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, donettom@linux.ibm.com, ritesh.list@gmail.com, aboorvad@linux.ibm.com Subject: [PATCH v3 2/7] selftests/mm: Add support to test 4PB VA on PPC64 Date: Tue, 29 Jul 2025 11:03:58 +0530 Message-ID: <20250729053403.1071807-3-aboorvad@linux.ibm.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250729053403.1071807-1-aboorvad@linux.ibm.com> References: <20250729053403.1071807-1-aboorvad@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: oaw_REjoX37XzBgjW1cvFZzgafNzvIa5 X-Authority-Analysis: v=2.4 cv=Mbtsu4/f c=1 sm=1 tr=0 ts=68885d64 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=Wb1JkmetP80A:10 a=VnNF1IyMAAAA:8 a=7CQSdrXTAAAA:8 a=20KFwNOVAAAA:8 a=Ikd4Dj_1AAAA:8 a=Bqi_dthY5MMbQG-DhooA:9 a=a-qgeE7W1pNrGK8U0ZQC:22 X-Proofpoint-ORIG-GUID: GzwiVAJad7mSRRBHQELlV_wh9Yabou-n X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzI5MDAzOCBTYWx0ZWRfXyUBMSh0aQ5NV I45ZiF3m9DMeKyZGo/XrJ/fmIBc67U7IS32oedfmYwFXUTy26JXM+vb40XC51Zvcs7H16gBEfsd u9I6tiPTKuqyCXj9vtx+NV0+XomlrBg+Em5mNuBSvr3LgyVFYAD0B0lpAyPRzjPHSZxo7AP+d78 AFC7vOoHQgoFN+UYPIxvod1lAM5uewvP6Qlo7CGFnnBEENcGw/8fq5yDKkbedt/T6j4Uxz4Sw5e 5qz2lmBYvN3a/WJvfQjYAj95DIoCLjMAt3sIRY+NBemOV2j/6kzUHhlfeuIut0+UqN4thJLgbAu YiZU4XKKjNl4PxrjAgKIQRrm95/UkcpmTGGc6t0hNTdp/K/sPnDCdPEwipuuj8gViDDTV822HB6 HI0uj50ZI6XTqzIZPZYRGxIThqANT+PxIDlgj1bU2Lt51ZGbdtmWTGG4qkz3cpIDT+QkXFR0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-29_01,2025-07-28_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 adultscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 spamscore=0 mlxscore=0 impostorscore=0 phishscore=0 mlxlogscore=959 lowpriorityscore=0 malwarescore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507290038 X-Rspamd-Queue-Id: C625F40005 X-Stat-Signature: gkbk19hwm19kh1bupifnrzcj16wbjgfi X-Rspam-User: X-Rspamd-Server: rspam11 X-HE-Tag: 1753767274-657658 X-HE-Meta: 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 EJaOKhYO yoVE4cnOn46KEpCjbOThf8mc9A7C7eHq+ZlM4PwYIrBzaXjeZwIC6rF27n4T2kpi8VfriS3zCn8Zq+5YQlDErt0zMp4semlZUKjvffwyerzZ/fAFolZV4rJuofYYogcif56Y5+Z24ijvaHgiCY0R4YN6ckUW5qoiJlo9inT4HxadgVLdZTAjCNnm3kw/f8cXpJ7U3knhKe3tIyEnYna/am07zI1WCS/64G5R5Nt9B0tY/2s4VgZYDa+AO4WWt6h65Sl9xSPrIULMflovRLYSQ4UB7Tp3lbm7mX+F2CJFc5bwgCOcq9KvuJyugcJBpFyQXqFPAzj10rPrulinzIBEmCLM7RB9Gbn+DZ9F1GeCJThTLkvpzsqMV33ljqrMlv/+4DXGI X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: Donet Tom PowerPC64 supports a 4PB virtual address space, but this test was previously limited to 512TB. This patch extends the coverage up to the full 4PB VA range on PowerPC64. Memory from 0 to 128TB is allocated without an address hint, while allocations from 128TB to 4PB use a hint address. Reviewed-by: Dev Jain Acked-by: David Hildenbrand Reviewed-by: Zi Yan Co-developed-by: Aboorva Devarajan Signed-off-by: Aboorva Devarajan Signed-off-by: Donet Tom --- tools/testing/selftests/mm/virtual_address_range.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/tools/testing/selftests/mm/virtual_address_range.c b/tools/testing/selftests/mm/virtual_address_range.c index e24c36a39f22..81b33d8f78f4 100644 --- a/tools/testing/selftests/mm/virtual_address_range.c +++ b/tools/testing/selftests/mm/virtual_address_range.c @@ -44,12 +44,18 @@ * On Arm64 the address space is 256TB and support for * high mappings up to 4PB virtual address space has * been added. + * + * On PowerPC64, the address space up to 128TB can be + * mapped without a hint. Addresses beyond 128TB, up to + * 4PB, can be mapped with a hint. + * */ #define NR_CHUNKS_128TB ((128 * SZ_1TB) / MAP_CHUNK_SIZE) /* Number of chunks for 128TB */ #define NR_CHUNKS_256TB (NR_CHUNKS_128TB * 2UL) #define NR_CHUNKS_384TB (NR_CHUNKS_128TB * 3UL) #define NR_CHUNKS_3840TB (NR_CHUNKS_128TB * 30UL) +#define NR_CHUNKS_3968TB (NR_CHUNKS_128TB * 31UL) #define ADDR_MARK_128TB (1UL << 47) /* First address beyond 128TB */ #define ADDR_MARK_256TB (1UL << 48) /* First address beyond 256TB */ @@ -59,6 +65,11 @@ #define HIGH_ADDR_SHIFT 49 #define NR_CHUNKS_LOW NR_CHUNKS_256TB #define NR_CHUNKS_HIGH NR_CHUNKS_3840TB +#elif defined(__PPC64__) +#define HIGH_ADDR_MARK ADDR_MARK_128TB +#define HIGH_ADDR_SHIFT 48 +#define NR_CHUNKS_LOW NR_CHUNKS_128TB +#define NR_CHUNKS_HIGH NR_CHUNKS_3968TB #else #define HIGH_ADDR_MARK ADDR_MARK_128TB #define HIGH_ADDR_SHIFT 48 -- 2.47.1