From: Ackerley Tng via B4 Relay <devnull+ackerleytng.google.com@kernel.org>
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,
tabba@google.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>,
Jason Gunthorpe <jgg@ziepe.ca>,
Vlastimil Babka <vbabka@kernel.org>,
Baoquan He <baoquan.he@linux.dev>
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 v9 02/41] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES
Date: Tue, 28 Jul 2026 17:35:01 -0700 [thread overview]
Message-ID: <20260728-gmem-inplace-conversion-v9-2-35f9aec2aed2@google.com> (raw)
In-Reply-To: <20260728-gmem-inplace-conversion-v9-0-35f9aec2aed2@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 7a258831616fa..9fdf13b071097 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1849,7 +1849,7 @@ 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
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 c519e8e8d646f..acafa7964964c 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -8070,7 +8070,7 @@ 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 0f1a829032c06..3308d58342955 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -10126,7 +10126,7 @@ 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 6aab167bf4823..9f78a466c6f3e 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;
@@ -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
@@ -2559,7 +2559,7 @@ 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));
@@ -2581,7 +2581,7 @@ 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 e9e32686e41be..902aa166c9c0c 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1115,7 +1115,7 @@ 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
@@ -1300,7 +1300,7 @@ 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);
@@ -2418,7 +2418,7 @@ 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))
@@ -2623,7 +2623,7 @@ 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)
{
@@ -4933,7 +4933,7 @@ 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
@@ -5337,7 +5337,7 @@ 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;
@@ -5348,7 +5348,7 @@ 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;
--
2.55.0.508.g3f0d502094-goog
next prev parent reply other threads:[~2026-07-29 0:35 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-29 0:34 [PATCH v9 00/41] guest_memfd: In-place conversion support Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 01/41] KVM: guest_memfd: Introduce per-gmem attributes, use to guard user mappings Ackerley Tng via B4 Relay
2026-07-29 0:35 ` Ackerley Tng via B4 Relay [this message]
2026-07-29 0:35 ` [PATCH v9 03/41] KVM: Enumerate support for PRIVATE memory iff kvm_arch_has_private_mem is defined Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 04/41] KVM: Rename memory attribute APIs to prepare for in-place gmem conversion Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 05/41] KVM: Provide generic interface for checking memory private/shared status Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 06/41] KVM: guest_memfd: Introduce function to check GFN " Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 07/41] KVM: guest_memfd: Wire up core private/shared attribute interfaces Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 08/41] KVM: Consolidate private memory and guest_memfd ifdeffery in kvm_host.h Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 09/41] KVM: guest_memfd: Filter both shared and private when invalidating Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 10/41] KVM: guest_memfd: Add base support for KVM_SET_MEMORY_ATTRIBUTES2 Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 11/41] KVM: guest_memfd: Ensure pages are not in use before conversion Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 12/41] KVM: guest_memfd: Call arch make_shared callback for to-shared conversion Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 13/41] KVM: guest_memfd: Return early if range already has requested attributes Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 14/41] mm: swap: Introduce lru_add_drain_progressive() Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 15/41] KVM: guest_memfd: Handle lru_add fbatch refcounts during conversion safety check Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 16/41] KVM: guest_memfd: Zero page while getting pfn Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 17/41] KVM: SEV: Make 'uaddr' parameter optional for KVM_SEV_SNP_LAUNCH_UPDATE Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 18/41] KVM: TDX: Make source page optional for KVM_TDX_INIT_MEM_REGION Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 19/41] KVM: Move KVM_VM_MEMORY_ATTRIBUTES config definition to x86 Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 20/41] KVM: Let userspace disable per-VM mem attributes, enable per-gmem attributes Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 21/41] KVM: guest_memfd: Enable INIT_SHARED on guest_memfd for x86 Coco VMs Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 22/41] KVM: selftests: Create gmem fd before "regular" fd when adding memslot Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 23/41] KVM: selftests: Rename guest_memfd{,_offset} to gmem_{fd,offset} Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 24/41] KVM: selftests: Add support for mmap() on guest_memfd in core library Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 25/41] KVM: selftests: Add selftests global for guest memory attributes capability Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 26/41] KVM: selftests: Add helpers for calling ioctls on guest_memfd Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 27/41] KVM: selftests: Test basic single-page conversion flow Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 28/41] KVM: selftests: Test conversion flow when INIT_SHARED Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 29/41] KVM: selftests: Test conversion precision in guest_memfd Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 30/41] KVM: selftests: Test conversion before allocation Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 31/41] KVM: selftests: Convert with allocated folios in different layouts Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 32/41] KVM: selftests: Test that truncation does not change shared/private status Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 33/41] KVM: selftests: Test that shared/private status is consistent across processes Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 34/41] KVM: selftests: Add helpers to pin pages with CONFIG_GUP_TEST Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 35/41] KVM: selftests: Test conversion with elevated page refcount Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 36/41] KVM: selftests: Reset shared memory after hole-punching Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 37/41] KVM: selftests: Provide function to look up guest_memfd details from gpa Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 38/41] KVM: selftests: Provide common function to set memory attributes Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 39/41] KVM: selftests: Make TEST_EXPECT_SIGBUS thread-safe Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 40/41] KVM: selftests: Update private_mem_conversions_test to mmap() guest_memfd Ackerley Tng via B4 Relay
2026-07-29 0:35 ` [PATCH v9 41/41] KVM: selftests: Update private memory exits test to work with per-gmem attributes Ackerley Tng via B4 Relay
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