From: Christian Borntraeger <borntraeger@linux.ibm.com>
To: balbirs@nvidia.com
Cc: Liam.Howlett@oracle.com, airlied@gmail.com,
akpm@linux-foundation.org, apopple@nvidia.com, baohua@kernel.org,
baolin.wang@linux.alibaba.com, byungchul@sk.com, dakr@kernel.org,
david@redhat.com, dev.jain@arm.com,
dri-devel@lists.freedesktop.org, francois.dugast@intel.com,
gourry@gourry.net, joshua.hahnjy@gmail.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
lorenzo.stoakes@oracle.com, lyude@redhat.com,
matthew.brost@intel.com, mpenttil@redhat.com, npache@redhat.com,
osalvador@suse.de, rakie.kim@sk.com, rcampbell@nvidia.com,
ryan.roberts@arm.com, simona@ffwll.ch,
ying.huang@linux.alibaba.com, ziy@nvidia.com,
kvm@vger.kernel.org, linux-s390@vger.kernel.org,
linux-next@vger.kernel.org
Subject: linux-next: KVM/s390x regression (was: [v7 03/16] mm/huge_memory: add device-private THP support to PMD operations)
Date: Fri, 17 Oct 2025 16:49:24 +0200 [thread overview]
Message-ID: <20251017144924.10034-1-borntraeger@linux.ibm.com> (raw)
In-Reply-To: <20251001065707.920170-4-balbirs@nvidia.com>
This patch triggers a regression for s390x kvm as qemu guests can no longer start
error: kvm run failed Cannot allocate memory
PSW=mask 0000000180000000 addr 000000007fd00600
R00=0000000000000000 R01=0000000000000000 R02=0000000000000000 R03=0000000000000000
R04=0000000000000000 R05=0000000000000000 R06=0000000000000000 R07=0000000000000000
R08=0000000000000000 R09=0000000000000000 R10=0000000000000000 R11=0000000000000000
R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000
C00=00000000000000e0 C01=0000000000000000 C02=0000000000000000 C03=0000000000000000
C04=0000000000000000 C05=0000000000000000 C06=0000000000000000 C07=0000000000000000
C08=0000000000000000 C09=0000000000000000 C10=0000000000000000 C11=0000000000000000
C12=0000000000000000 C13=0000000000000000 C14=00000000c2000000 C15=0000000000000000
KVM on s390x does not use THP so far, will investigate. Does anyone have a quick idea?
Christian Borntraeger
next prev parent reply other threads:[~2025-10-17 14:49 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-01 6:56 [v7 00/16] mm: support device-private THP Balbir Singh
2025-10-01 6:56 ` [v7 01/16] mm/zone_device: support large zone device private folios Balbir Singh
2025-10-12 6:10 ` Lance Yang
2025-10-12 22:54 ` Balbir Singh
2025-10-01 6:56 ` [v7 02/16] mm/zone_device: Rename page_free callback to folio_free Balbir Singh
2025-10-01 6:56 ` [v7 03/16] mm/huge_memory: add device-private THP support to PMD operations Balbir Singh
2025-10-12 15:46 ` Lance Yang
2025-10-13 0:01 ` Balbir Singh
2025-10-13 1:48 ` Lance Yang
2025-10-17 14:49 ` Christian Borntraeger [this message]
2025-10-17 14:54 ` linux-next: KVM/s390x regression David Hildenbrand
2025-10-17 15:01 ` Christian Borntraeger
2025-10-17 15:07 ` David Hildenbrand
2025-10-17 15:20 ` Christian Borntraeger
2025-10-17 17:07 ` David Hildenbrand
2025-10-17 21:56 ` Balbir Singh
2025-10-17 22:15 ` David Hildenbrand
2025-10-17 22:41 ` David Hildenbrand
2025-10-20 7:01 ` Christian Borntraeger
2025-10-20 7:00 ` Christian Borntraeger
2025-10-20 8:41 ` David Hildenbrand
2025-10-20 9:04 ` Claudio Imbrenda
2025-10-27 16:47 ` Claudio Imbrenda
2025-10-27 16:59 ` David Hildenbrand
2025-10-27 17:06 ` Christian Borntraeger
2025-10-28 9:24 ` Balbir Singh
2025-10-28 13:01 ` [PATCH v1 0/1] KVM: s390: Fix missing present bit for gmap puds Claudio Imbrenda
2025-10-28 13:01 ` [PATCH v1 1/1] " Claudio Imbrenda
2025-10-28 21:23 ` Balbir Singh
2025-10-29 10:00 ` David Hildenbrand
2025-10-29 10:20 ` Claudio Imbrenda
2025-10-28 22:53 ` [PATCH v1 0/1] " Andrew Morton
2025-10-01 6:56 ` [v7 04/16] mm/rmap: extend rmap and migration support device-private entries Balbir Singh
2025-10-22 11:54 ` Lance Yang
2025-10-01 6:56 ` [v7 05/16] mm/huge_memory: implement device-private THP splitting Balbir Singh
2025-10-01 6:56 ` [v7 06/16] mm/migrate_device: handle partially mapped folios during collection Balbir Singh
2025-10-01 6:56 ` [v7 07/16] mm/migrate_device: implement THP migration of zone device pages Balbir Singh
2025-10-01 6:56 ` [v7 08/16] mm/memory/fault: add THP fault handling for zone device private pages Balbir Singh
2025-10-01 6:57 ` [v7 09/16] lib/test_hmm: add zone device private THP test infrastructure Balbir Singh
2025-10-01 6:57 ` [v7 10/16] mm/memremap: add driver callback support for folio splitting Balbir Singh
2025-10-01 6:57 ` [v7 11/16] mm/migrate_device: add THP splitting during migration Balbir Singh
2025-10-13 21:17 ` Zi Yan
2025-10-13 21:33 ` Balbir Singh
2025-10-13 21:55 ` Zi Yan
2025-10-13 22:50 ` Balbir Singh
2025-10-19 8:19 ` Wei Yang
2025-10-19 22:49 ` Balbir Singh
2025-10-19 22:59 ` Zi Yan
2025-10-21 21:34 ` Balbir Singh
2025-10-22 2:59 ` Zi Yan
2025-10-22 7:16 ` Balbir Singh
2025-10-22 15:26 ` Zi Yan
2025-10-28 9:32 ` Balbir Singh
2025-10-01 6:57 ` [v7 12/16] lib/test_hmm: add large page allocation failure testing Balbir Singh
2025-10-01 6:57 ` [v7 13/16] selftests/mm/hmm-tests: new tests for zone device THP migration Balbir Singh
2025-10-01 6:57 ` [v7 14/16] selftests/mm/hmm-tests: partial unmap, mremap and anon_write tests Balbir Singh
2025-10-01 6:57 ` [v7 15/16] selftests/mm/hmm-tests: new throughput tests including THP Balbir Singh
2025-10-01 6:57 ` [v7 16/16] gpu/drm/nouveau: enable THP support for GPU memory migration Balbir Singh
2025-10-09 3:17 ` [v7 00/16] mm: support device-private THP Andrew Morton
2025-10-09 3:26 ` Balbir Singh
2025-10-09 10:33 ` Matthew Brost
2025-10-13 22:51 ` Balbir Singh
2025-11-11 23:43 ` Andrew Morton
2025-11-11 23:52 ` Balbir Singh
2025-11-12 0:24 ` Andrew Morton
2025-11-12 0:36 ` Balbir Singh
2025-11-20 2:40 ` Matthew Brost
2025-11-20 2:50 ` Balbir Singh
2025-11-20 2:59 ` Balbir Singh
2025-11-20 3:15 ` Matthew Brost
2025-11-20 3:58 ` Balbir Singh
2025-11-20 5:46 ` Balbir Singh
2025-11-20 5:53 ` Matthew Brost
2025-11-20 6:03 ` Balbir Singh
2025-11-20 17:27 ` Matthew Brost
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