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Fri, 15 May 2026 11:51:44 +0000 (GMT) Received: from osiris (unknown [9.111.88.167]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTPS; Fri, 15 May 2026 11:51:44 +0000 (GMT) Date: Fri, 15 May 2026 13:51:42 +0200 From: Steffen Eiden To: Claudio Imbrenda Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-s390@vger.kernel.org, borntraeger@de.ibm.com, frankja@linux.ibm.com, david@kernel.org, nrb@linux.ibm.com, schlameuss@linux.ibm.com, gra@linux.ibm.com Subject: Re: [PATCH v2 5/5] KVM: s390: Properly reset zero bit in PGSTE Message-ID: <20260515115142.70445-E-seiden@linux.ibm.com> References: <20260512175251.300882-1-imbrenda@linux.ibm.com> <20260512175251.300882-6-imbrenda@linux.ibm.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260512175251.300882-6-imbrenda@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: B6NsyhI4p6wytRHiUb1erfj1FUANlBxq X-Authority-Analysis: v=2.4 cv=RemgzVtv c=1 sm=1 tr=0 ts=6a0708d5 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=kj9zAlcOel0A:10 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=9DvXnxvuG7zSzAFeCowA:9 a=CjuIK1q_8ugA:10 a=UzISIztuOb4A:10 a=VxAk22fqlfwA:10 X-Proofpoint-ORIG-GUID: B6NsyhI4p6wytRHiUb1erfj1FUANlBxq X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTE1MDExNyBTYWx0ZWRfX8a0TRFT5URfi c51sOHU3ts9qNfLCHyR1gK083oYTKBVZECGZxsjX07tWFqP40pNByfB5t2vpbO2uBFVednz9sb9 8L9PFIi3x/HBA5s9DLTnqATAl05W2jJ0wOHK52poWTDu/rpUXB8q/g2pE9lADITV8cTwEkKzbeB HFriSoPzMOxmF8ypeP9eGFK51rM2DvAbCCe7lvkTZkB5HS9ChOmuTvercFK2zkawm5zeoiKFp97 IdWEl5BTZ7qUVsJ9YdcS3B75cl24LlfUaOTvXIYSWlVDvc1j3+Mn5OAEOu10LrjUwtC8vhfbJU7 mimyfVxwavT+d7cCNDG37O/cfRknn4A8fxphapRicPN/uUzix6emqBHzn74kgLdbB4Y8XrfgS26 j8oiU8QDU4o9HHIst09DM2agMi49w2OgkvFpxk+SWnPDUl49FwOxcxYkwvop/3Z4sKpzsd7xyEs /mFbvMao674IrprA76Q== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-15_02,2026-05-13_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 suspectscore=0 adultscore=0 priorityscore=1501 bulkscore=0 phishscore=0 spamscore=0 impostorscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605150117 On Tue, May 12, 2026 at 07:52:51PM +0200, Claudio Imbrenda wrote: > When calling _gmap_ptep_xchg(), always clear the pgste.zero bit. This > prevents the page from being accidentally discarded when getting > unmapped. > > Signed-off-by: Claudio Imbrenda Reviewed-by: Steffen Eiden