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Fri, 17 Oct 2025 15:01:42 GMT Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1E81E20043; Fri, 17 Oct 2025 15:01:42 +0000 (GMT) Received: from smtpav07.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E57DF20040; Fri, 17 Oct 2025 15:01:40 +0000 (GMT) Received: from [9.111.36.47] (unknown [9.111.36.47]) by smtpav07.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 17 Oct 2025 15:01:40 +0000 (GMT) Message-ID: Date: Fri, 17 Oct 2025 17:01:39 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: linux-next: KVM/s390x regression To: David Hildenbrand , 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, 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 References: <20251001065707.920170-4-balbirs@nvidia.com> <20251017144924.10034-1-borntraeger@linux.ibm.com> <9beff9d6-47c7-4a65-b320-43efd1e12687@redhat.com> Content-Language: en-US From: Christian Borntraeger In-Reply-To: <9beff9d6-47c7-4a65-b320-43efd1e12687@redhat.com> Content-Type: text/plain; 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Does anyone have a quick idea? > > Only when running KVM guests and apart from that everything else seems to be fine? We have other weirdness in linux-next but in different areas. Could that somehow be related to use disabling THP for the kvm address space?