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Sat, 16 Aug 2025 04:01:53 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 224432004B; Sat, 16 Aug 2025 04:01:53 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 121EE20040; Sat, 16 Aug 2025 04:01:41 +0000 (GMT) Received: from aboo.ibm.com.com (unknown [9.36.5.210]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Sat, 16 Aug 2025 04:01:40 +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, richard.weiyang@gmail.com 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 v4 2/7] selftests/mm: Add support to test 4PB VA on PPC64 Date: Sat, 16 Aug 2025 09:31:08 +0530 Message-ID: <20250816040113.760010-3-aboorvad@linux.ibm.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250816040113.760010-1-aboorvad@linux.ibm.com> References: <20250816040113.760010-1-aboorvad@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=XbqJzJ55 c=1 sm=1 tr=0 ts=68a002b6 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=2OwXVqhp2XgA:10 a=VnNF1IyMAAAA:8 a=7CQSdrXTAAAA:8 a=20KFwNOVAAAA:8 a=Ikd4Dj_1AAAA:8 a=WmnS56O_TwYD7c2XGFoA:9 a=a-qgeE7W1pNrGK8U0ZQC:22 X-Proofpoint-ORIG-GUID: ejoYArjV969070TmiEX0lepj9eH35uQD X-Proofpoint-GUID: CPC1I9ANuAlCecLDI3vFdpLyyCUnehTQ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODE2MDAyNyBTYWx0ZWRfX5NAKPf+ZWHY6 C1LwpL8fxKLpg4r66NlosVvl+4FXGALI8k7u8jP23tZlK0FIPPZm1ePuJuRbQJAzrgXRNwCZscj l3pt7Ec6hPOtQoJYKztSj0RUt7dxG5W3A92OvHQ7F5AgaeYJTLiyvOrRJIb83Wyxf4EoKsnEIGa HkITpwJnz3VKolGPHTnWu53KpiUN7Bz+4urtojVkMtkZLyf7jZ5xdvHGMTQbuNvfi3WxUnkMZKE lI1WOZfPOnIjhurE8f82iWZLZWtOIOyisqiiTl+4jSc3dB8zPTRlqY5S2n11+Ay7dK9bNzIZwEd 6urW80DoF1uCitB5K97S89r9lIod5VMH/E51MPRMMIf2SFqz9jHcfSwJq0NUfRVcgTcR1NCdIiR +0XooGjy 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=2025-08-16_01,2025-08-14_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 adultscore=0 suspectscore=0 priorityscore=1501 bulkscore=0 clxscore=1015 malwarescore=0 spamscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508160027 X-Stat-Signature: g91fqi7cxdgot565bskerusojwcj7zot X-Rspam-User: X-Rspamd-Queue-Id: 72090180005 X-Rspamd-Server: rspam01 X-HE-Tag: 1755316923-467131 X-HE-Meta: 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 X6p9Hn4m JHKLuMViNRkSGMOj0+FkEFmybeeivkFk9q3zkfHhm0+ixbY+gQSq+7cT6JX7BWbVezOGkNar9uJUN0NpeI+Ib4iF0EQFuZbkFDp7rDQ56PhHVth8iv4zUehXkF/Wc7qDppAFyxPXwtHlVEjiAnPzfPn0Tk3XTG9hRC0Fl7kwxcR1VBL5Jf56I3HUsmIA3sTVNlOgb/efBAsBlfpB7Jry3U2dAWnnkc3ZUBWjwrcpjOl0DRjmJYHeouFDnuyG8S4C7RkH+3qsjVZpbkV55BWi9AtrMo2b7MaRRqDyqT2JFIE2vqtRMvrHpN8V0fvOPIoNqvlEtMxNgqGY2TQ89k/ORxJWLlEmGJk7xVwr046KpM5GmyfoBAgW8i4hV7JVdlObsn1f5ENTGZmciaHucUuqUn3VQ8BUEVMN1bYKXSmhhByjzQmCZGlzmCAUA/PHeUUdjWc4YWLjG4NevOITUW6OBRRBRfA== 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. Co-developed-by: Aboorva Devarajan Signed-off-by: Aboorva Devarajan Reviewed-by: Dev Jain Acked-by: David Hildenbrand Reviewed-by: Zi Yan 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 e7ef6759baa1..1de62f6cadc7 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