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Wed, 30 Sep 2026 17:34:45 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 30 Sep 2026 17:34:45 +0000 (GMT) From: Steffen Eiden To: kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Cc: Alexander Gordeev , Andreas Grapentin , Arnd Bergmann , Catalin Marinas , Christian Borntraeger , Claudio Imbrenda , David Hildenbrand , Friedrich Welter , Fuad Tabba , Gautam Gala , Hariharan Mari , Heiko Carstens , Hendrik Brueckner , Ilya Leoshkevich , Janosch Frank , Joey Gouly , Marc Zyngier , Nico Boehr , Nina Schoetterl-Glausch , Oliver Upton , Paolo Bonzini , Sean Christopherson , Suzuki K Poulose , Sven Schnelle , Ulrich Weigand , Vasily Gorbik , Will Deacon , Zenghui Yu Subject: [PATCH v9 11/24] KVM: arm64: Share arm64 code with s390 Date: Wed, 30 Sep 2026 19:34:26 +0200 Message-ID: <20260930173441.66762-12-seiden@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260930173441.66762-1-seiden@linux.ibm.com> References: <20260930173441.66762-1-seiden@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTMwMDA2OCBTYWx0ZWRfXzzhL4OhpQIXY CBqTqZ4l3AsdOR5djuxwo2T5GirjukVReXo+55k21X1POj+G5r7LpWe/Kuuqn+r/4XMGte0OxRf zPnh6NmOoBomMaNYpUoXkDXsgUIwEqBySmatpwBDrY5K/otC9WlTiGkCJZ2HK5uuGzHtS8V8afJ 7lLQAiUYOBM/xm+xsDA3p/cKhvMM3DNtqRFyqah3CPAIU90xctJLckpy3DeeiAkWwDi83f24H3s aO4Zfjf0on7JoE/CrjfT5ohmtCg1kxpTsB2SjbPmlukEBUK+g6x41z/vBvF6Us6NZZpvX7OMd2G XXWt5bEPtfE8PToKHcdpGxCqyL47UKPXf0bbQIdEvH/ijmQK6/iglskgSlyzIBN6GkJ+E54FxCr K7tPpQ1UmGSO2XsZUgFjHuoXIWZdbdgok9QDd9eufz5dM0bRiA2NBO6tS7MKYqtJQXexiL5yYj2 fsdHWKq0JHXn+GaBk3w== X-Authority-Analysis: v=2.4 cv=SPbXx+vH c=1 sm=1 tr=0 ts=6abd483b cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VnNF1IyMAAAA:8 a=3a0hE5hcTyqzKRjSqTQA:9 X-Proofpoint-ORIG-GUID: Xd_ZakBeel19n2HFe3Iovl7L9xptfE_O X-Proofpoint-Spam-Info: AW1haW4tMjYwOTMwMDA2OCBTYWx0ZWRfX2XuRMXv7TS4u CrRODW7SdNToDOTiaXqf+6bofPl0EkL0Di+BrJUI/qS1tRWX3NaKy+7RRoRpcm62FY6Cc0eEdTT UYInS2XxWoHfQuWr1mdvy22o1bzUafY= X-Proofpoint-GUID: dXNoOwlDZr3NevnscUkD_yU_rdrcEn8c 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=2026-09-30_03,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 clxscore=1015 spamscore=0 lowpriorityscore=0 malwarescore=0 adultscore=0 bulkscore=0 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609300068 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260930_103503_054748_69CBEC9A X-CRM114-Status: GOOD ( 16.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Mark functions that s390 can use to implement arm on s390 as shared functions. No functional change. Signed-off-by: Steffen Eiden --- arch/arm64/kvm/arm.c | 3 +++ arch/arm64/kvm/guest.c | 6 ++++++ arch/arm64/kvm/mmio.c | 2 ++ 3 files changed, 11 insertions(+) diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 0576c2022ef5..b94879a0b409 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -1607,6 +1607,7 @@ static unsigned long system_supported_vcpu_features(void) return features; } +#if ARM64_S390_COMMON == 1 static int kvm_vcpu_init_check_features(struct kvm_vcpu *vcpu, const struct kvm_vcpu_init *init) { @@ -1660,6 +1661,8 @@ static bool kvm_vcpu_init_changed(struct kvm_vcpu *vcpu, KVM_VCPU_MAX_FEATURES); } +#endif /* ARM64_S390_COMMON == 1 */ + static int kvm_setup_vcpu(struct kvm_vcpu *vcpu) { struct kvm *kvm = vcpu->kvm; diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 773f6c8e5026..0259c515997b 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -62,6 +62,7 @@ const struct kvm_stats_header kvm_vcpu_stats_header = { sizeof(kvm_vcpu_stats_desc), }; +#if ARM64_S390_COMMON == 1 static bool core_reg_offset_is_vreg(u64 off) { return off >= KVM_REG_ARM_CORE_REG(fp_regs.vregs) && @@ -306,6 +307,8 @@ static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) return err; } +#endif /* ARM64_S390_COMMON == 1 */ + #define vq_word(vq) (((vq) - SVE_VQ_MIN) / 64) #define vq_mask(vq) ((u64)1 << ((vq) - SVE_VQ_MIN) % 64) #define vq_present(vqs, vq) (!!((vqs)[vq_word(vq)] & vq_mask(vq))) @@ -543,6 +546,7 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) return -EINVAL; } +#if ARM64_S390_COMMON == 1 static int copy_core_reg_indices(const struct kvm_vcpu *vcpu, u64 __user *uindices) { @@ -591,6 +595,8 @@ static unsigned long num_core_regs(const struct kvm_vcpu *vcpu) return copy_core_reg_indices(vcpu, NULL); } +#endif /* ARM64_S390_COMMON == 1 */ + static unsigned long num_sve_regs(const struct kvm_vcpu *vcpu) { const unsigned int slices = vcpu_sve_slices(vcpu); diff --git a/arch/arm64/kvm/mmio.c b/arch/arm64/kvm/mmio.c index d1c3a352d5a2..3eaf687eae07 100644 --- a/arch/arm64/kvm/mmio.c +++ b/arch/arm64/kvm/mmio.c @@ -10,6 +10,7 @@ #include "trace.h" +#if ARM64_S390_COMMON == 1 void kvm_mmio_write_buf(void *buf, unsigned int len, unsigned long data) { void *datap = NULL; @@ -258,3 +259,4 @@ int io_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa) run->exit_reason = KVM_EXIT_MMIO; return 0; } +#endif /* ARM64_S390_COMMON == 1 */ -- 2.53.0