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Fri, 06 Nov 2026 16:08:20 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (smtpav02.fra02v.mail.ibm.com [10.20.54.101]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 6A6G8GKJ47579594 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 6 Nov 2026 16:08:16 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C025920040; Fri, 6 Nov 2026 16:08:16 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 649F42004F; Fri, 6 Nov 2026 16:08:16 +0000 (GMT) Received: from a46lp73.lnxne.boe (unknown [9.87.84.240]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 6 Nov 2026 16:08:16 +0000 (GMT) From: Steffen Eiden Date: Fri, 06 Nov 2026 17:07:40 +0100 Subject: [PATCH v3 07/23] KVM: arm64: Prepare sys_regs.c for sharing with s390 X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261106-sysreg-v3-7-75e95980fb10@linux.ibm.com> References: <20261106-sysreg-v3-0-75e95980fb10@linux.ibm.com> In-Reply-To: <20261106-sysreg-v3-0-75e95980fb10@linux.ibm.com> To: Marc Zyngier , Oliver Upton , Fuad Tabba , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , Will Deacon , Mark Rutland , Andreas Grapentin , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , David Hildenbrand , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Sven Schnelle , Friedrich Welter , Gautam Gala , Hariharan Mari , Hendrik Brueckner , Nico Boehr , Ulrich Weigand , Arnd Bergmann , Paolo Bonzini Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-s390@vger.kernel.org, Steffen Eiden X-Mailer: b4 0.14.3 X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=O86sLx9W c=1 sm=1 tr=0 ts=6aedfb75 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=9-t8X3E59gj7HnmGAIQA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-ORIG-GUID: -pX1Z9GW6JL8QqSOMXXoNkiOmiJtCJQV X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTA2MDA2MiBTYWx0ZWRfX+PGo3QcJtNQc 17Z8j6Ly0DToRWyb0IHl41E/zRHGDESPn0TME9Ti7wo53ZzOKEKRW+mCLe6JK+NW8LlSwy9rG4X UHuuDRWufNvruISz8QVK/fTIUwgZ8RAMNhzfokn1+4lXjkeuUXMOXpgJIBLrNLRoHXLfE+YQJIG gIdNQWoPc8d5fizcSuWiZ1TB8JaNtF9bgnFJWYzpNQNxYGaWpjuh2mskjlOxmlzAc1DoL1Kb77b nZNFvUSa8M1jZT83lkmqot/TfFLPQ7+JcEX1tHJxOcXGvvlBVZPKPAgvGPsRKziE+FASXodmZqq xeN74cZLiLF2pmrge6ltyyFKKLqeX/GPiWuhI6Ey+XsJulejMUsm+h7oq72AFEfbfM6QZr+jgfp 9iCykS+nMnKxZlLUNp2UCKn6HHUZQW+6vF1+IrEjQv1JeRGuYXo4oHdB//gRMiYoIyTpktMEZ3z PXGOiHKhUYl+AGrkl6A== X-Proofpoint-GUID: -pX1Z9GW6JL8QqSOMXXoNkiOmiJtCJQV X-Proofpoint-Spam-Info: AW1haW4tMjYxMTA2MDA2MiBTYWx0ZWRfX6y+Q/GmXsJQj 5INdRl7n449K11Er7eTKSEaks74XDwYPHQYKTllbzogGLAb7G/2lBtdVw2EFcTWSgGs5SSNwK3H 3jNTjoPwVfd02bdWbinpTHF9Yn03beo= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-06_05,2026-11-06_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 malwarescore=0 adultscore=0 suspectscore=0 spamscore=0 bulkscore=0 priorityscore=1501 phishscore=0 impostorscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2611040001 definitions=main-2611060062 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261106_080839_659619_A92C13BF X-CRM114-Status: GOOD ( 16.30 ) X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-16.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Prepare sharing of sys_regs.c with s390 by moving reset_{vm,vcpu}_ftr_id_regs just before the UAPI definitions. Also, move kvm_handle_cp14_load_store to other cp functions. This small refactoring allows to have less shared sections. No functional changes. Co-developed-by: Andreas Grapentin Signed-off-by: Andreas Grapentin Signed-off-by: Steffen Eiden --- arch/arm64/kvm/sys_regs.c | 52 +++++++++++++++++++++++++---------------------- 1 file changed, 28 insertions(+), 24 deletions(-) diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index 8c91de6a4097..e71c1b169b49 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -4855,12 +4855,6 @@ static bool check_sysreg_table(const struct sys_reg_desc *table, unsigned int n, return true; } -int kvm_handle_cp14_load_store(struct kvm_vcpu *vcpu) -{ - kvm_inject_undefined(vcpu); - return 1; -} - static void perform_access(struct kvm_vcpu *vcpu, struct sys_reg_params *params, const struct sys_reg_desc *r) @@ -4888,6 +4882,12 @@ static void perform_access(struct kvm_vcpu *vcpu, kvm_incr_pc(vcpu); } +int kvm_handle_cp14_load_store(struct kvm_vcpu *vcpu) +{ + kvm_inject_undefined(vcpu); + return 1; +} + /* * emulate_cp -- tries to match a sys_reg access in a handling table, and * call the corresponding trap handler. @@ -5340,25 +5340,9 @@ void kvm_sys_regs_create_debugfs(struct kvm *kvm) &sr_resx_fops); } -static void reset_vm_ftr_id_reg(struct kvm_vcpu *vcpu, const struct sys_reg_desc *reg) -{ - u32 id = reg_to_encoding(reg); - struct kvm *kvm = vcpu->kvm; - - if (test_bit(KVM_ARCH_FLAG_ID_REGS_INITIALIZED, &kvm->arch.flags)) - return; - - kvm_set_vm_id_reg(kvm, id, reg->reset(vcpu, reg)); -} - +static void reset_vm_ftr_id_reg(struct kvm_vcpu *vcpu, const struct sys_reg_desc *reg); static void reset_vcpu_ftr_id_reg(struct kvm_vcpu *vcpu, - const struct sys_reg_desc *reg) -{ - if (kvm_vcpu_initialized(vcpu)) - return; - - reg->reset(vcpu, reg); -} + const struct sys_reg_desc *reg); /** * kvm_reset_sys_regs - sets system registers to reset value @@ -5432,6 +5416,26 @@ int kvm_handle_sys_reg(struct kvm_vcpu *vcpu) return 1; } +static void reset_vm_ftr_id_reg(struct kvm_vcpu *vcpu, const struct sys_reg_desc *reg) +{ + u32 id = reg_to_encoding(reg); + struct kvm *kvm = vcpu->kvm; + + if (test_bit(KVM_ARCH_FLAG_ID_REGS_INITIALIZED, &kvm->arch.flags)) + return; + + kvm_set_vm_id_reg(kvm, id, reg->reset(vcpu, reg)); +} + +static void reset_vcpu_ftr_id_reg(struct kvm_vcpu *vcpu, + const struct sys_reg_desc *reg) +{ + if (kvm_vcpu_initialized(vcpu)) + return; + + reg->reset(vcpu, reg); +} + /****************************************************************************** * Userspace API *****************************************************************************/ -- 2.56.0