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Wed, 8 Jun 2022 12:03:25 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 71E395204E; Wed, 8 Jun 2022 12:03:25 +0000 (GMT) Received: from li-ca45c2cc-336f-11b2-a85c-c6e71de567f1 (unknown [9.152.224.44]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id 2D36A52057; Wed, 8 Jun 2022 12:03:25 +0000 (GMT) Date: Wed, 8 Jun 2022 14:03:23 +0200 From: Nico Boehr To: Claudio Imbrenda Cc: kvm@vger.kernel.org, borntraeger@de.ibm.com, frankja@linux.ibm.com, thuth@redhat.com, pasic@linux.ibm.com, david@redhat.com, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, scgl@linux.ibm.com, mimu@linux.ibm.com Subject: Re: [PATCH v11 11/19] s390/mm: KVM: pv: when tearing down, try to destroy protected pages Message-ID: <20220608140323.0c46c0a2@li-ca45c2cc-336f-11b2-a85c-c6e71de567f1> In-Reply-To: <20220603065645.10019-12-imbrenda@linux.ibm.com> References: <20220603065645.10019-1-imbrenda@linux.ibm.com> <20220603065645.10019-12-imbrenda@linux.ibm.com> X-Mailer: Claws Mail 4.1.0 (GTK 3.24.34; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: MAME0xyuyz5yYozDYAbY2aKAJUvsZ4iP X-Proofpoint-ORIG-GUID: Tpv7AVSoRSjx5mIYSNYcYTvM9Y-5VDgI X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.874,Hydra:6.0.517,FMLib:17.11.64.514 definitions=2022-06-08_03,2022-06-07_02,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 phishscore=0 spamscore=0 adultscore=0 lowpriorityscore=0 clxscore=1015 mlxlogscore=768 impostorscore=0 mlxscore=0 malwarescore=0 priorityscore=1501 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2204290000 definitions=main-2206080049 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RDNS_NONE, SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 3 Jun 2022 08:56:37 +0200 Claudio Imbrenda wrote: > When ptep_get_and_clear_full is called for a mm teardown, we will now > attempt to destroy the secure pages. This will be faster than export. > > In case it was not a teardown, or if for some reason the destroy page > UVC failed, we try with an export page, like before. > > Signed-off-by: Claudio Imbrenda > Acked-by: Janosch Frank Reviewed-by: Nico Boehr