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Mon, 21 Sep 2026 15:23:55 +0000 (GMT) Received: from osiris (unknown [9.111.14.239]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTPS; Mon, 21 Sep 2026 15:23:55 +0000 (GMT) Date: Mon, 21 Sep 2026 17:23:54 +0200 From: Heiko Carstens To: Peter Oberparleiter Cc: Vineeth Vijayan , Vasily Gorbik , Alexander Gordeev , linux-s390@vger.kernel.org Subject: Re: [PATCH v2] s390/cmf: Fix virtual vs physical address confusion Message-ID: <20260921152354.9433H88-hca@linux.ibm.com> References: <20260921131648.3636771-1-oberpar@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-s390@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: <20260921131648.3636771-1-oberpar@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: XaBM_VsvykjAtjSq9U_paneTV8nBJtL8 X-Authority-Analysis: v=2.4 cv=I43w19gg c=1 sm=1 tr=0 ts=6ab14c10 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=ZS3Fz0Y9rkdUzaftGkkA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTIxMDIyMCBTYWx0ZWRfXye0pUl3xs7+A JKjEqY3tY7Bik1eaJ5teuuuiRuuuClds5ehc4pgO3NsE7fmQdOkSlqoMNSsKKzDNC65tfCSJk+L NmFHdM2HN9JAi/o7UngdOfsXkwyQrg2zg8y1htbBrdPdKoP1LfP8XcSFXCBDDp3Wr/LSS6HsDfP rjo7aG/SLuiHC6NvMQMzDu8AhdA3MeSBaHetS9xAInbtgdx76rid5Qn2g4vgWOgESG/u3uixwB8 9CGytcg6qpB6vZnjRqRQHjMp+pFfTqPTfLZ7lgI9apBQBH0geuOyZLsCHDnTXGN0bOpEVs1h4ZJ cxVRJGQW5qoOdQHyhM8E1pG72Po8oRm1qybUfwIGtI5bK85zBzel71A4zXTrbAShoeRHZoR99p5 lcaKWIn63V+d3HD87q8/UE1KCo5XByWM8NNXHc+VVNGhfnls8uvuUnfnoNUk+Nk7lH4y7lM4ICC 9ZcvZSUORbJTXOTXSUA== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTIxMDIyMCBTYWx0ZWRfX8m1ZIUqCrTTe Qbdl530jdokqCtMHDwqvCIRRdmVKULp6NUvauky0EnswDMG2YGxy9xFH6rcRUaL7zEBKZRBJkeo 6UI9OeOMw/EZAKBa0KspY+Z2Rv24Jr8= X-Proofpoint-GUID: XaBM_VsvykjAtjSq9U_paneTV8nBJtL8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-21_05,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 adultscore=0 suspectscore=0 impostorscore=0 lowpriorityscore=0 bulkscore=0 phishscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609210220 On Mon, Sep 21, 2026 at 03:16:48PM +0200, Peter Oberparleiter wrote: > The measurement block address is an absolute address. Define the > associated schib_config and schib fields as dma64_t to enable automatic > detection of incorrect assignments. Also add the missing virt_to_dma64() > translation. > > Without this fix, a wrong address will be used by firmware when storing > extended format channel measurement data on kernels built with > CONFIG_RANDOMIZE_IDENTITY_BASE=y. > > Fixes: 14edd0d73bfe ("s390/cmf: fix virtual vs physical address confusion") > Cc: > Signed-off-by: Peter Oberparleiter > --- > v2: > - Change type of mba field from u64 to dma64_t > - Add fixes and cc-stable tags > > drivers/s390/cio/cio.h | 5 +++-- > drivers/s390/cio/cmf.c | 2 +- > 2 files changed, 4 insertions(+), 3 deletions(-) Applied, thanks!