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Mon, 22 Dec 2025 16:50:36 +0000 (GMT) From: Claudio Imbrenda To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, borntraeger@de.ibm.com, frankja@linux.ibm.com, nsg@linux.ibm.com, nrb@linux.ibm.com, seiden@linux.ibm.com, gra@linux.ibm.com, schlameuss@linux.ibm.com, hca@linux.ibm.com, svens@linux.ibm.com, agordeev@linux.ibm.com, gor@linux.ibm.com, david@redhat.com, gerald.schaefer@linux.ibm.com Subject: [PATCH v6 02/28] KVM: s390: add P bit in table entry bitfields, move union vaddress Date: Mon, 22 Dec 2025 17:50:07 +0100 Message-ID: <20251222165033.162329-3-imbrenda@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251222165033.162329-1-imbrenda@linux.ibm.com> References: <20251222165033.162329-1-imbrenda@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: uE34NIIOU3eTeik5C15RuIg0jwrPHKyT X-Authority-Analysis: v=2.4 cv=Qdxrf8bv c=1 sm=1 tr=0 ts=694976e2 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=wP3pNCr1ah4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=ejxT3_R5mcMXAYFV490A:9 X-Proofpoint-ORIG-GUID: uE34NIIOU3eTeik5C15RuIg0jwrPHKyT X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjIyMDE1NCBTYWx0ZWRfXyg9Ft+hTY2Cz hoJe0kzvM4O95S8mPM9VxDBIrHxZAHVvJ/oJKQKRvF/5OsOMjOh55zMpITmpeym7Kv7uaX1ETUx Yvzmn2AEOOseDeeeif1i6EilH+CO0JzO3DVBy9HCPVV96OSjiVazv94OS7gveq6/+VcCtHiBz4Y NxF1EyZotvUviIm7kKfnvtkLSUp1qF1YVHLPWmGWd3HHIDd/SRa33EoqKuKxkwXEx1CztHAOJRy I01JLuoTYbWtAC7RQycOyrorVJssCo0Gwlk03E714EJMJGL/O5x5B+f8Kqj4Lvj0qNDJsCf7sF0 LCiZ0bKX8VxsEvecYIebJ01RGt5P2DK8IVK0/NRPlNWqaoLwRZ+cdfX2XYRMpW5NY3OGa/lfuIs WdJKYeGvu78XDrMs9TPSrY9F8a6DkjaoXKQWUDfJ2ayL/HnVtT9CYw0JLJHnYgz8rtGBMZTXfYP Rv1GwRPaVgBdOpoprqg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-22_02,2025-12-22_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 lowpriorityscore=0 malwarescore=0 clxscore=1015 priorityscore=1501 phishscore=0 impostorscore=0 adultscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2512120000 definitions=main-2512220154 Content-Type: text/plain; charset="utf-8" Add P bit in hardware definition of region 3 and segment table entries. Move union vaddress from kvm/gaccess.c to asm/dat_bits.h Signed-off-by: Claudio Imbrenda Reviewed-by: Christian Borntraeger Reviewed-by: Steffen Eiden Reviewed-by: Christoph Schlameuss --- arch/s390/include/asm/dat-bits.h | 32 ++++++++++++++++++++++++++++++-- arch/s390/kvm/gaccess.c | 26 -------------------------- 2 files changed, 30 insertions(+), 28 deletions(-) diff --git a/arch/s390/include/asm/dat-bits.h b/arch/s390/include/asm/dat-b= its.h index 8d65eec2f124..c40874e0e426 100644 --- a/arch/s390/include/asm/dat-bits.h +++ b/arch/s390/include/asm/dat-bits.h @@ -9,6 +9,32 @@ #ifndef _S390_DAT_BITS_H #define _S390_DAT_BITS_H =20 +/* + * vaddress union in order to easily decode a virtual address into its + * region first index, region second index etc. parts. + */ +union vaddress { + unsigned long addr; + struct { + unsigned long rfx : 11; + unsigned long rsx : 11; + unsigned long rtx : 11; + unsigned long sx : 11; + unsigned long px : 8; + unsigned long bx : 12; + }; + struct { + unsigned long rfx01 : 2; + unsigned long : 9; + unsigned long rsx01 : 2; + unsigned long : 9; + unsigned long rtx01 : 2; + unsigned long : 9; + unsigned long sx01 : 2; + unsigned long : 29; + }; +}; + union asce { unsigned long val; struct { @@ -98,7 +124,8 @@ union region3_table_entry { struct { unsigned long : 53; unsigned long fc: 1; /* Format-Control */ - unsigned long : 4; + unsigned long p : 1; /* DAT-Protection Bit */ + unsigned long : 3; unsigned long i : 1; /* Region-Invalid Bit */ unsigned long cr: 1; /* Common-Region Bit */ unsigned long tt: 2; /* Table-Type Bits */ @@ -140,7 +167,8 @@ union segment_table_entry { struct { unsigned long : 53; unsigned long fc: 1; /* Format-Control */ - unsigned long : 4; + unsigned long p : 1; /* DAT-Protection Bit */ + unsigned long : 3; unsigned long i : 1; /* Segment-Invalid Bit */ unsigned long cs: 1; /* Common-Segment Bit */ unsigned long tt: 2; /* Table-Type Bits */ diff --git a/arch/s390/kvm/gaccess.c b/arch/s390/kvm/gaccess.c index 41ca6b0ee7a9..d8347f7cbe51 100644 --- a/arch/s390/kvm/gaccess.c +++ b/arch/s390/kvm/gaccess.c @@ -20,32 +20,6 @@ =20 #define GMAP_SHADOW_FAKE_TABLE 1ULL =20 -/* - * vaddress union in order to easily decode a virtual address into its - * region first index, region second index etc. parts. - */ -union vaddress { - unsigned long addr; - struct { - unsigned long rfx : 11; - unsigned long rsx : 11; - unsigned long rtx : 11; - unsigned long sx : 11; - unsigned long px : 8; - unsigned long bx : 12; - }; - struct { - unsigned long rfx01 : 2; - unsigned long : 9; - unsigned long rsx01 : 2; - unsigned long : 9; - unsigned long rtx01 : 2; - unsigned long : 9; - unsigned long sx01 : 2; - unsigned long : 29; - }; -}; - /* * raddress union which will contain the result (real or absolute address) * after a page table walk. The rfaa, sfaa and pfra members are used to --=20 2.52.0