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Tue, 21 Jan 2025 14:09:35 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DA9762005A; Tue, 21 Jan 2025 14:09:34 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DF52B20040; Tue, 21 Jan 2025 14:09:33 +0000 (GMT) Received: from [9.171.13.4] (unknown [9.171.13.4]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 21 Jan 2025 14:09:33 +0000 (GMT) Message-ID: <87a29211-7092-48eb-be98-3f4fb3cf36be@linux.ibm.com> Date: Tue, 21 Jan 2025 15:09:33 +0100 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 11/15] KVM: s390: stop using lists to keep track of used dat tables To: Claudio Imbrenda , kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, borntraeger@de.ibm.com, schlameuss@linux.ibm.com, david@redhat.com, willy@infradead.org, hca@linux.ibm.com, svens@linux.ibm.com, agordeev@linux.ibm.com, gor@linux.ibm.com, nrb@linux.ibm.com, nsg@linux.ibm.com, seanjc@google.com, seiden@linux.ibm.com References: <20250117190938.93793-1-imbrenda@linux.ibm.com> <20250117190938.93793-12-imbrenda@linux.ibm.com> Content-Language: en-US From: Janosch Frank Autocrypt: addr=frankja@linux.ibm.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: j15h4ps74J1OEQUjEjSpjBKVhTJuKjIk X-Proofpoint-ORIG-GUID: LsTT8q1NNl0bZYNYB70jcaTdDD-tuLWA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-01-21_05,2025-01-21_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1015 mlxscore=0 phishscore=0 impostorscore=0 priorityscore=1501 malwarescore=0 adultscore=0 mlxlogscore=797 spamscore=0 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2501210115 On 1/17/25 8:09 PM, Claudio Imbrenda wrote: > Until now, every dat table allocated to map a guest was put in a > linked list. The page->lru field of struct page was used to keep track > of which pages were being used, and when the gmap is torn down, the > list was walked and all pages freed. > > This patch gets rid of the usage of page->lru. Page tables are now > freed by recursively walking the dat table tree. > > Since s390_unlist_old_asce() becomes useless now, remove it. > > Signed-off-by: Claudio Imbrenda Acked-by: Janosch Frank