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From: Ackerley Tng <ackerleytng@google.com>
To: aik@amd.com, andrew.jones@linux.dev, binbin.wu@linux.intel.com,
	 brauner@kernel.org, chao.p.peng@linux.intel.com,
	david@kernel.org,  jmattson@google.com, jthoughton@google.com,
	michael.roth@amd.com,  oupton@kernel.org, pankaj.gupta@amd.com,
	qperret@google.com,  rick.p.edgecombe@intel.com,
	rientjes@google.com, shivankg@amd.com,  steven.price@arm.com,
	willy@infradead.org, wyihan@google.com,  yan.y.zhao@intel.com,
	forkloop@google.com, pratyush@kernel.org,
	 suzuki.poulose@arm.com, aneesh.kumar@kernel.org,
	liam@infradead.org,  Paolo Bonzini <pbonzini@redhat.com>,
	Sean Christopherson <seanjc@google.com>,
	 Thomas Gleixner <tglx@kernel.org>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	 Dave Hansen <dave.hansen@linux.intel.com>,
	x86@kernel.org,  "H. Peter Anvin" <hpa@zytor.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	 Masami Hiramatsu <mhiramat@kernel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	 Jonathan Corbet <corbet@lwn.net>,
	Shuah Khan <skhan@linuxfoundation.org>,
	 Shuah Khan <shuah@kernel.org>,
	Vishal Annapurve <vannapurve@google.com>,
	 Andrew Morton <akpm@linux-foundation.org>,
	Chris Li <chrisl@kernel.org>,  Kairui Song <kasong@tencent.com>,
	Kemeng Shi <shikemeng@huaweicloud.com>,
	 Nhat Pham <nphamcs@gmail.com>, Barry Song <baohua@kernel.org>,
	 Axel Rasmussen <axelrasmussen@google.com>,
	Yuanchu Xie <yuanchu@google.com>,  Wei Xu <weixugc@google.com>,
	Youngjun Park <youngjun.park@lge.com>,
	 Qi Zheng <qi.zheng@linux.dev>,
	Shakeel Butt <shakeel.butt@linux.dev>,
	 Kiryl Shutsemau <kas@kernel.org>,
	Baoquan He <baoquan.he@linux.dev>, Jason Gunthorpe <jgg@ziepe.ca>,
	 John Hubbard <jhubbard@nvidia.com>, Peter Xu <peterx@redhat.com>,
	tarunsahu@google.com,  Fuad Tabba <fuad.tabba@linux.dev>,
	Vlastimil Babka <vbabka@kernel.org>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	 linux-trace-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
	 linux-kselftest@vger.kernel.org, linux-mm@kvack.org,
	 linux-coco@lists.linux.dev,
	Ackerley Tng <ackerleytng@google.com>,
	 Xiaoyao Li <xiaoyao.li@intel.com>
Subject: [PATCH v11 04/46] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
Date: Wed, 26 Aug 2026 09:18:02 +0000	[thread overview]
Message-ID: <20260826-gmem-inplace-conversion-v11-4-0a15d8a799aa@google.com> (raw)
In-Reply-To: <20260826-gmem-inplace-conversion-v11-0-0a15d8a799aa@google.com>

From: Sean Christopherson <seanjc@google.com>

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 <seanjc@google.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
Tested-by: Shivank Garg <shivankg@amd.com>
Signed-off-by: Ackerley Tng <ackerleytng@google.com>
---
 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_host.h
index 6beddd8a0c749..744c1f6ff03ed 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1851,7 +1851,7 @@ enum kvm_intr_type {
 	((vcpu) && (vcpu)->arch.handling_intr_from_guest && \
 	 (!!in_nmi() == ((vcpu)->arch.handling_intr_from_guest == KVM_HANDLING_NMI)))
 
-#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
 #ifdef CONFIG_HAVE_KVM_ARCH_GMEM_CONVERT
diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 538ed1e803326..2f8e1b5a8a72c 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
@@ -135,7 +135,7 @@ 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)
@@ -159,7 +159,7 @@ config KVM_AMD_SEV
 	depends on KVM_AMD && X86_64
 	depends on CRYPTO_DEV_SP_PSP && !(KVM_AMD=y && CRYPTO_DEV_CCP_DD=m)
 	select ARCH_HAS_CC_PLATFORM
-	select KVM_GENERIC_MEMORY_ATTRIBUTES
+	select KVM_VM_MEMORY_ATTRIBUTES
 	select HAVE_KVM_ARCH_GMEM_CONVERT
 	select HAVE_KVM_ARCH_GMEM_RECLAIM
 	select HAVE_KVM_ARCH_GMEM_INVALIDATE
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 947c9cd843450..b88c00e11854a 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -8097,7 +8097,7 @@ void kvm_mmu_pre_destroy_vm(struct kvm *kvm)
 		vhost_task_stop(kvm->arch.nx_huge_page_recovery_thread);
 }
 
-#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 4b3681796c752..29e41d334cedf 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -10140,7 +10140,7 @@ static int kvm_alloc_memslot_metadata(struct kvm *kvm,
 		}
 	}
 
-#ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES
+#ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES
 	kvm_mmu_init_memslot_memory_attributes(kvm, slot);
 #endif
 
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index b7516e19ef419..cffa16647f2ab 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -722,7 +722,7 @@ static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu)
 }
 #endif
 
-#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;
@@ -872,7 +872,7 @@ 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
@@ -2560,7 +2560,7 @@ static inline bool kvm_memslot_is_gmem_only(const struct kvm_memory_slot *slot)
 	return slot->flags & KVM_MEMSLOT_GMEM_ONLY;
 }
 
-#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));
@@ -2582,7 +2582,7 @@ 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 */
 
 #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)
 );
 
-#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 */
 
 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 c3c0ee253fc77..df575449d97b5 100644
--- a/virt/kvm/Kconfig
+++ b/virt/kvm/Kconfig
@@ -100,7 +100,7 @@ config KVM_ELIDE_TLB_FLUSH_IF_YOUNG
 config KVM_MMU_LOCKLESS_AGING
        bool
 
-config KVM_GENERIC_MEMORY_ATTRIBUTES
+config KVM_VM_MEMORY_ATTRIBUTES
        bool
 
 config KVM_GUEST_MEMFD
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 65eb26a0520d8..7d5325e3cb44b 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1116,7 +1116,7 @@ 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
 
@@ -1301,7 +1301,7 @@ 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);
@@ -2419,7 +2419,7 @@ static int kvm_vm_ioctl_clear_dirty_log(struct kvm *kvm,
 }
 #endif /* CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT */
 
-#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))
@@ -2624,7 +2624,7 @@ static int kvm_vm_ioctl_set_mem_attributes(struct kvm *kvm,
 
 	return kvm_vm_set_mem_attributes(kvm, start, end, attrs->attributes);
 }
-#endif /* CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES */
+#endif /* CONFIG_KVM_VM_MEMORY_ATTRIBUTES */
 
 struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn)
 {
@@ -4941,7 +4941,7 @@ static int kvm_vm_ioctl_check_extension_generic(struct 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
@@ -5345,7 +5345,7 @@ 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;
 
@@ -5356,7 +5356,7 @@ static long kvm_vm_ioctl(struct file *filp,
 		r = 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;
 

-- 
2.55.0.887.g758fc8c411-goog


  parent reply	other threads:[~2026-08-26  9:18 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-26  9:17 [PATCH v11 00/46] guest_memfd: In-place conversion support Ackerley Tng
2026-08-26  9:17 ` [PATCH v11 01/46] KVM: guest_memfd: Optimize away conversion overheads via dead-code elimination Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 02/46] KVM: guest_memfd: Use kvm_mem_is_private() when populating guest_memfd memory Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 03/46] KVM: guest_memfd: Introduce per-gmem attributes, use to guard user mappings Ackerley Tng
2026-08-26  9:18 ` Ackerley Tng [this message]
2026-08-26  9:18 ` [PATCH v11 05/46] KVM: Enumerate support for PRIVATE memory iff kvm_arch_has_private_mem is defined Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 06/46] KVM: Rename memory attribute APIs to prepare for in-place gmem conversion Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 07/46] KVM: Rename kvm_mem_is_private() to kvm_is_private_gfn() Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 08/46] KVM: Provide generic interface for checking memory private/shared status Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 09/46] KVM: guest_memfd: Stub in ability to enable in-place shared<=>private conversion Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 10/46] KVM: Consolidate private memory and guest_memfd ifdeffery in kvm_host.h Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 11/46] KVM: guest_memfd: Invalidate both SHARED and PRIVATE mappings for in-place conversions Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 12/46] KVM: guest_memfd: Pass mapping type filter to invalidation helper Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 13/46] KVM: guest_memfd: Add base support for KVM_SET_MEMORY_ATTRIBUTES2 Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 14/46] KVM: guest_memfd: Ensure pages are not in use before conversion Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 15/46] KVM: guest_memfd: Call arch make_shared callback for to-shared conversion Ackerley Tng
2026-08-26 19:44   ` Sean Christopherson
2026-08-26 22:17     ` Michael Roth
2026-08-26 22:33       ` Sean Christopherson
2026-08-26 23:47         ` Michael Roth
2026-08-26  9:18 ` [PATCH v11 16/46] KVM: guest_memfd: Return early if range already has requested attributes Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 17/46] mm/gup: factor out LRU cache draining for folio into lru_cache_drain_for_folio() Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 18/46] KVM: guest_memfd: Handle lru_add fbatch refcounts during conversion safety check Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 19/46] KVM: guest_memfd: Zero page while getting pfn Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 20/46] KVM: SEV: Make 'uaddr' parameter optional for KVM_SEV_SNP_LAUNCH_UPDATE Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 21/46] KVM: TDX: Make source page optional for KVM_TDX_INIT_MEM_REGION Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 22/46] KVM: Move KVM_VM_MEMORY_ATTRIBUTES config definition to x86 Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 23/46] KVM: Let userspace disable per-VM mem attributes, enable per-gmem attributes Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 24/46] KVM: guest_memfd: Enable INIT_SHARED on guest_memfd for x86 Coco VMs Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 25/46] KVM: selftests: Create gmem fd before "regular" fd when adding memslot Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 26/46] KVM: selftests: Rename guest_memfd{,_offset} to gmem_{fd,offset} Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 27/46] KVM: selftests: Add support for mmap() on guest_memfd in core library Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 28/46] KVM: selftests: Add selftests global for guest memory attributes capability Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 29/46] KVM: selftests: Add helpers for calling ioctls on guest_memfd Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 30/46] KVM: selftests: Test basic single-page conversion flow Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 31/46] KVM: selftests: Test conversion flow when INIT_SHARED Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 32/46] KVM: selftests: Test conversion precision in guest_memfd Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 33/46] KVM: selftests: Test conversion before allocation Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 34/46] KVM: selftests: Convert with allocated folios in different layouts Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 35/46] KVM: selftests: Test that truncation does not change shared/private status Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 36/46] KVM: selftests: Test that shared/private status is consistent across processes Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 37/46] KVM: selftests: Add helpers to pin pages with CONFIG_GUP_TEST Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 38/46] KVM: selftests: Test conversion with elevated page refcount Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 39/46] KVM: selftests: Reset shared memory after hole-punching Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 40/46] KVM: selftests: Provide function to look up guest_memfd details from gpa Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 41/46] KVM: selftests: Provide common function to set memory attributes Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 42/46] KVM: selftests: Make TEST_EXPECT_SIGBUS thread-safe Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 43/46] KVM: selftests: Support guest_memfd attributes in private_mem_conversions_test Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 44/46] KVM: selftests: Set up page size and alignment independently for guest_memfd Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 45/46] KVM: selftests: Test in-place conversions in private_mem_conversions_test Ackerley Tng
2026-08-26  9:18 ` [PATCH v11 46/46] KVM: selftests: Update private memory exits test to work with per-gmem attributes Ackerley Tng

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