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AJvYcCXCGgqbXesoSIpttf0mOZ7sSqtMLfaIm0HOruQn4Q+wP2bnbNNLIaNCtz1N8bvRVJrkpkXvCpEcDxcQsEQ=@vger.kernel.org X-Gm-Message-State: AOJu0YzMh1rVFBTAcm2jBJwXp4liPZkXcZMmYII/t1AMXSsZ/Mpwvgqv CfqF3RVPmN7Zg8TPL9a59W1Bdo9CuVw9P0/skr039pvMwgUiq375pw6T0DuaWM2i7dv4qjsMNOV Ytngyy9jnm60+u48Leal/39dzxg== X-Google-Smtp-Source: AGHT+IFkGPr4YdLNxY8qTP/AAx1XyUe3sO+8GjEBnMuobjzPF3tU486njyTsE2mHlvi3N0LFt6amdyv+9G2JDMbdOQ== X-Received: from pjboh7.prod.google.com ([2002:a17:90b:3a47:b0:332:8246:26ae]) (user=ackerleytng job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:58ae:b0:33b:e034:c1c0 with SMTP id 98e67ed59e1d1-33be034c22fmr3157843a91.23.1760731951854; Fri, 17 Oct 2025 13:12:31 -0700 (PDT) Date: Fri, 17 Oct 2025 13:11:43 -0700 In-Reply-To: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.51.0.858.gf9c4a03a3a-goog Message-ID: Subject: [RFC PATCH v1 02/37] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES From: Ackerley Tng To: cgroups@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org Cc: ackerleytng@google.com, akpm@linux-foundation.org, binbin.wu@linux.intel.com, bp@alien8.de, brauner@kernel.org, chao.p.peng@intel.com, chenhuacai@kernel.org, corbet@lwn.net, dave.hansen@intel.com, dave.hansen@linux.intel.com, david@redhat.com, dmatlack@google.com, erdemaktas@google.com, fan.du@intel.com, fvdl@google.com, haibo1.xu@intel.com, hannes@cmpxchg.org, hch@infradead.org, hpa@zytor.com, hughd@google.com, ira.weiny@intel.com, isaku.yamahata@intel.com, jack@suse.cz, james.morse@arm.com, jarkko@kernel.org, jgg@ziepe.ca, jgowans@amazon.com, jhubbard@nvidia.com, jroedel@suse.de, jthoughton@google.com, jun.miao@intel.com, kai.huang@intel.com, keirf@google.com, kent.overstreet@linux.dev, liam.merwick@oracle.com, maciej.wieczor-retman@intel.com, mail@maciej.szmigiero.name, maobibo@loongson.cn, mathieu.desnoyers@efficios.com, maz@kernel.org, mhiramat@kernel.org, mhocko@kernel.org, mic@digikod.net, michael.roth@amd.com, mingo@redhat.com, mlevitsk@redhat.com, mpe@ellerman.id.au, muchun.song@linux.dev, nikunj@amd.com, nsaenz@amazon.es, oliver.upton@linux.dev, palmer@dabbelt.com, pankaj.gupta@amd.com, paul.walmsley@sifive.com, pbonzini@redhat.com, peterx@redhat.com, pgonda@google.com, prsampat@amd.com, pvorel@suse.cz, qperret@google.com, richard.weiyang@gmail.com, rick.p.edgecombe@intel.com, rientjes@google.com, rostedt@goodmis.org, roypat@amazon.co.uk, rppt@kernel.org, seanjc@google.com, shakeel.butt@linux.dev, shuah@kernel.org, steven.price@arm.com, steven.sistare@oracle.com, suzuki.poulose@arm.com, tabba@google.com, tglx@linutronix.de, thomas.lendacky@amd.com, vannapurve@google.com, vbabka@suse.cz, viro@zeniv.linux.org.uk, vkuznets@redhat.com, wei.w.wang@intel.com, will@kernel.org, willy@infradead.org, wyihan@google.com, xiaoyao.li@intel.com, yan.y.zhao@intel.com, yilun.xu@intel.com, yuzenghui@huawei.com, zhiquan1.li@intel.com Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Sean Christopherson Rename the per-VM memory attributes Kconfig to make it explicitly about per-VM attributes in anticipation of adding memory attributes support to guest_memfd, at which point it will be possible (and desirable) to have memory attributes without the per-VM support, even in x86. No functional change intended. Signed-off-by: Sean Christopherson --- arch/x86/include/asm/kvm_host.h | 2 +- arch/x86/kvm/Kconfig | 6 +++--- arch/x86/kvm/mmu/mmu.c | 2 +- arch/x86/kvm/x86.c | 2 +- include/linux/kvm_host.h | 8 ++++---- include/trace/events/kvm.h | 4 ++-- virt/kvm/Kconfig | 2 +- virt/kvm/kvm_main.c | 14 +++++++------- 8 files changed, 20 insertions(+), 20 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_hos= t.h index 48598d017d6f3..efb0b2e1808d5 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -2301,7 +2301,7 @@ void kvm_configure_mmu(bool enable_tdp, int tdp_force= d_root_level, int tdp_max_root_level, int tdp_huge_page_level); =20 =20 -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES #define kvm_arch_has_private_mem(kvm) ((kvm)->arch.has_private_mem) #endif =20 diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig index 4e43923656d0e..acb03b45ba050 100644 --- a/arch/x86/kvm/Kconfig +++ b/arch/x86/kvm/Kconfig @@ -84,7 +84,7 @@ config KVM_SW_PROTECTED_VM bool "Enable support for KVM software-protected VMs" depends on EXPERT depends on KVM_X86 && X86_64 - select KVM_GENERIC_MEMORY_ATTRIBUTES + select KVM_VM_MEMORY_ATTRIBUTES help Enable support for KVM software-protected VMs. Currently, software- protected VMs are purely a development and testing vehicle for @@ -134,7 +134,7 @@ config KVM_INTEL_TDX bool "Intel Trust Domain Extensions (TDX) support" default y depends on INTEL_TDX_HOST - select KVM_GENERIC_MEMORY_ATTRIBUTES + select KVM_VM_MEMORY_ATTRIBUTES select HAVE_KVM_ARCH_GMEM_POPULATE help Provides support for launching Intel Trust Domain Extensions (TDX) @@ -158,7 +158,7 @@ config KVM_AMD_SEV depends on KVM_AMD && X86_64 depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=3Dy && CRYPTO_DEV_CCP_DD=3Dm) select ARCH_HAS_CC_PLATFORM - select KVM_GENERIC_MEMORY_ATTRIBUTES + select KVM_VM_MEMORY_ATTRIBUTES select HAVE_KVM_ARCH_GMEM_PREPARE select HAVE_KVM_ARCH_GMEM_INVALIDATE select HAVE_KVM_ARCH_GMEM_POPULATE diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 667d66cf76d5e..e4542b37b0db6 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -7808,7 +7808,7 @@ void kvm_mmu_pre_destroy_vm(struct kvm *kvm) vhost_task_stop(kvm->arch.nx_huge_page_recovery_thread); } =20 -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES static bool hugepage_test_mixed(struct kvm_memory_slot *slot, gfn_t gfn, int level) { diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index fe3dc3eb43312..5e38c4c9cf63c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -13398,7 +13398,7 @@ static int kvm_alloc_memslot_metadata(struct kvm *k= vm, } } =20 -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES kvm_mmu_init_memslot_memory_attributes(kvm, slot); #endif =20 diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 680ca838f0181..fddb373fcbaaf 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -721,7 +721,7 @@ static inline int kvm_arch_vcpu_memslots_id(struct kvm_= vcpu *vcpu) } #endif =20 -#ifndef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifndef CONFIG_KVM_VM_MEMORY_ATTRIBUTES static inline bool kvm_arch_has_private_mem(struct kvm *kvm) { return false; @@ -871,7 +871,7 @@ struct kvm { #ifdef CONFIG_HAVE_KVM_PM_NOTIFIER struct notifier_block pm_notifier; #endif -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES /* Protected by slots_lock (for writes) and RCU (for reads) */ struct xarray mem_attr_array; #endif @@ -2514,7 +2514,7 @@ static inline bool kvm_memslot_is_gmem_only(const str= uct kvm_memory_slot *slot) return slot->flags & KVM_MEMSLOT_GMEM_ONLY; } =20 -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES static inline unsigned long kvm_get_memory_attributes(struct kvm *kvm, gfn= _t gfn) { return xa_to_value(xa_load(&kvm->mem_attr_array, gfn)); @@ -2536,7 +2536,7 @@ static inline bool kvm_mem_is_private(struct kvm *kvm= , gfn_t gfn) { return false; } -#endif /* CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES */ +#endif /* CONFIG_KVM_VM_MEMORY_ATTRIBUTES */ =20 #ifdef CONFIG_KVM_GUEST_MEMFD int kvm_gmem_get_pfn(struct kvm *kvm, struct kvm_memory_slot *slot, diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h index b282e3a867696..1ba72bd73ea2f 100644 --- a/include/trace/events/kvm.h +++ b/include/trace/events/kvm.h @@ -358,7 +358,7 @@ TRACE_EVENT(kvm_dirty_ring_exit, TP_printk("vcpu %d", __entry->vcpu_id) ); =20 -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES /* * @start: Starting address of guest memory range * @end: End address of guest memory range @@ -383,7 +383,7 @@ TRACE_EVENT(kvm_vm_set_mem_attributes, TP_printk("%#016llx -- %#016llx [0x%lx]", __entry->start, __entry->end, __entry->attr) ); -#endif /* CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES */ +#endif /* CONFIG_KVM_VM_MEMORY_ATTRIBUTES */ =20 TRACE_EVENT(kvm_unmap_hva_range, TP_PROTO(unsigned long start, unsigned long end), diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index a01cc5743137c..9dd7873114b59 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -108,7 +108,7 @@ config KVM_MMU_LOCKLESS_AGING depends on KVM_GENERIC_MMU_NOTIFIER bool =20 -config KVM_GENERIC_MEMORY_ATTRIBUTES +config KVM_VM_MEMORY_ATTRIBUTES depends on KVM_GENERIC_MMU_NOTIFIER bool =20 diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 4845e5739436a..f73047ea4333e 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1131,7 +1131,7 @@ static struct kvm *kvm_create_vm(unsigned long type, = const char *fdname) spin_lock_init(&kvm->mn_invalidate_lock); rcuwait_init(&kvm->mn_memslots_update_rcuwait); xa_init(&kvm->vcpu_array); -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES xa_init(&kvm->mem_attr_array); #endif =20 @@ -1322,7 +1322,7 @@ static void kvm_destroy_vm(struct kvm *kvm) cleanup_srcu_struct(&kvm->irq_srcu); srcu_barrier(&kvm->srcu); cleanup_srcu_struct(&kvm->srcu); -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES xa_destroy(&kvm->mem_attr_array); #endif kvm_arch_free_vm(kvm); @@ -2425,7 +2425,7 @@ static int kvm_vm_ioctl_clear_dirty_log(struct kvm *k= vm, } #endif /* CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT */ =20 -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES static u64 kvm_supported_mem_attributes(struct kvm *kvm) { if (!kvm || kvm_arch_has_private_mem(kvm)) @@ -2630,7 +2630,7 @@ static int kvm_vm_ioctl_set_mem_attributes(struct kvm= *kvm, =20 return kvm_vm_set_mem_attributes(kvm, start, end, attrs->attributes); } -#endif /* CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES */ +#endif /* CONFIG_KVM_VM_MEMORY_ATTRIBUTES */ =20 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn) { @@ -4921,7 +4921,7 @@ static int kvm_vm_ioctl_check_extension_generic(struc= t kvm *kvm, long arg) case KVM_CAP_SYSTEM_EVENT_DATA: case KVM_CAP_DEVICE_CTRL: return 1; -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES case KVM_CAP_MEMORY_ATTRIBUTES: return kvm_supported_mem_attributes(kvm); #endif @@ -5325,7 +5325,7 @@ static long kvm_vm_ioctl(struct file *filp, break; } #endif /* CONFIG_HAVE_KVM_IRQ_ROUTING */ -#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES +#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES case KVM_SET_MEMORY_ATTRIBUTES: { struct kvm_memory_attributes attrs; =20 @@ -5336,7 +5336,7 @@ static long kvm_vm_ioctl(struct file *filp, r =3D kvm_vm_ioctl_set_mem_attributes(kvm, &attrs); break; } -#endif /* CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES */ +#endif /* CONFIG_KVM_VM_MEMORY_ATTRIBUTES */ case KVM_CREATE_DEVICE: { struct kvm_create_device cd; =20 --=20 2.51.0.858.gf9c4a03a3a-goog