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From: Binbin Wu <binbin.wu@linux.intel.com>
To: ackerleytng@google.com
Cc: aik@amd.com, andrew.jones@linux.dev, brauner@kernel.org,
	chao.p.peng@linux.intel.com, david@kernel.org,
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	linux-coco@lists.linux.dev
Subject: Re: [PATCH v8 07/46] KVM: Rename memory attribute APIs to prepare for in-place gmem conversion
Date: Tue, 23 Jun 2026 12:55:50 +0800	[thread overview]
Message-ID: <96fb369d-dbff-4ed6-b1f9-0ce63d7d4ed0@linux.intel.com> (raw)
In-Reply-To: <20260618-gmem-inplace-conversion-v8-7-9d2959357853@google.com>

On 6/19/2026 8:31 AM, Ackerley Tng via B4 Relay wrote:

> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> index d370e834d619e..eb26d4ea8945a 100644
> --- a/include/linux/kvm_host.h
> +++ b/include/linux/kvm_host.h
> @@ -2534,13 +2534,13 @@ static inline bool kvm_memslot_is_gmem_only(const struct kvm_memory_slot *slot)
>  }
>  
>  #ifdef CONFIG_KVM_VM_MEMORY_ATTRIBUTES
> -static inline unsigned long kvm_get_memory_attributes(struct kvm *kvm, gfn_t gfn)
> +static inline unsigned long kvm_get_vm_memory_attributes(struct kvm *kvm, gfn_t gfn)
>  {
>  	return xa_to_value(xa_load(&kvm->mem_attr_array, gfn));
>  }
>  
> -bool kvm_range_has_memory_attributes(struct kvm *kvm, gfn_t start, gfn_t end,
> -				     unsigned long mask, unsigned long attrs);
> +bool kvm_range_has_vm_memory_attributes(struct kvm *kvm, gfn_t start, gfn_t end,
> +					unsigned long mask, unsigned long attrs);
>  bool kvm_arch_pre_set_memory_attributes(struct kvm *kvm,
>  					struct kvm_gfn_range *range);
>  bool kvm_arch_post_set_memory_attributes(struct kvm *kvm,
> @@ -2548,7 +2548,14 @@ bool kvm_arch_post_set_memory_attributes(struct kvm *kvm,
>  
>  static inline bool kvm_mem_is_private(struct kvm *kvm, gfn_t gfn)
>  {
> -	return kvm_get_memory_attributes(kvm, gfn) & KVM_MEMORY_ATTRIBUTE_PRIVATE;
> +	return kvm_get_vm_memory_attributes(kvm, gfn) & KVM_MEMORY_ATTRIBUTE_PRIVATE;
> +}
> +static inline bool kvm_mem_range_is_private(struct kvm *kvm, gfn_t start,
> +					    gfn_t end)
> +{
> +	return kvm_range_has_vm_memory_attributes(kvm, start, end,
> +						  KVM_MEMORY_ATTRIBUTE_PRIVATE,
> +						  KVM_MEMORY_ATTRIBUTE_PRIVATE);
>  }

This function is added, but never used in this patch series.
Is it intended to be called only when CONFIG_KVM_VM_MEMORY_ATTRIBUTES is
enabled?



>  #else
>  static inline bool kvm_mem_is_private(struct kvm *kvm, gfn_t gfn)

  parent reply	other threads:[~2026-06-23  4:56 UTC|newest]

Thread overview: 87+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-19  0:31 [PATCH v8 00/46] guest_memfd: In-place conversion support Ackerley Tng via B4 Relay
2026-06-19  0:31 ` [PATCH v8 01/46] KVM: guest_memfd: Introduce per-gmem attributes, use to guard user mappings Ackerley Tng via B4 Relay
2026-06-22  9:08   ` Binbin Wu
2026-06-23  1:37     ` Sean Christopherson
2026-06-23  2:14       ` Binbin Wu
2026-06-19  0:31 ` [PATCH v8 02/46] KVM: Rename KVM_GENERIC_MEMORY_ATTRIBUTES to KVM_VM_MEMORY_ATTRIBUTES Ackerley Tng via B4 Relay
2026-06-23  2:48   ` Binbin Wu
2026-06-19  0:31 ` [PATCH v8 03/46] KVM: Move KVM_VM_MEMORY_ATTRIBUTES config definition to x86 Ackerley Tng via B4 Relay
2026-06-23  2:48   ` Binbin Wu
2026-06-19  0:31 ` [PATCH v8 04/46] KVM: Decouple kvm_has_arch_private_mem from CONFIG_KVM_VM_MEMORY_ATTRIBUTES Ackerley Tng via B4 Relay
2026-06-19  8:10   ` Fuad Tabba
2026-06-23  2:51   ` Binbin Wu
2026-06-19  0:31 ` [PATCH v8 05/46] KVM: Make CONFIG_KVM_VM_MEMORY_ATTRIBUTES selectable Ackerley Tng via B4 Relay
2026-06-19  8:12   ` Fuad Tabba
2026-06-19 12:51   ` Julian Braha
2026-06-23  0:16     ` Sean Christopherson
2026-06-19  0:31 ` [PATCH v8 06/46] KVM: Enumerate support for PRIVATE memory iff kvm_arch_has_private_mem is defined Ackerley Tng via B4 Relay
2026-06-23  3:10   ` Binbin Wu
2026-06-19  0:31 ` [PATCH v8 07/46] KVM: Rename memory attribute APIs to prepare for in-place gmem conversion Ackerley Tng via B4 Relay
2026-06-19  8:16   ` Fuad Tabba
2026-06-23  4:55   ` Binbin Wu [this message]
2026-06-19  0:31 ` [PATCH v8 08/46] KVM: Provide generic interface for checking memory private/shared status Ackerley Tng via B4 Relay
2026-06-19  8:19   ` Fuad Tabba
2026-06-19  8:21     ` Fuad Tabba
2026-06-19  9:57       ` Suzuki K Poulose
2026-06-19  0:31 ` [PATCH v8 09/46] KVM: guest_memfd: Introduce function to check GFN " Ackerley Tng via B4 Relay
2026-06-19  8:25   ` Fuad Tabba
2026-06-23  5:25   ` Binbin Wu
2026-06-19  0:31 ` [PATCH v8 10/46] KVM: guest_memfd: Wire up core private/shared attribute interfaces Ackerley Tng via B4 Relay
2026-06-19  8:34   ` Fuad Tabba
2026-06-23  6:15   ` Binbin Wu
2026-06-19  0:31 ` [PATCH v8 11/46] KVM: Consolidate private memory and guest_memfd ifdeffery in kvm_host.h Ackerley Tng via B4 Relay
2026-06-19 11:02   ` Fuad Tabba
2026-06-23  6:19   ` Binbin Wu
2026-06-19  0:31 ` [PATCH v8 12/46] KVM: guest_memfd: Only prepare folios for private pages Ackerley Tng via B4 Relay
2026-06-23  6:48   ` Binbin Wu
2026-06-19  0:31 ` [PATCH v8 13/46] KVM: guest_memfd: Add base support for KVM_SET_MEMORY_ATTRIBUTES2 Ackerley Tng via B4 Relay
2026-06-19  9:25   ` Fuad Tabba
2026-06-23  0:22     ` Sean Christopherson
2026-06-19  0:31 ` [PATCH v8 14/46] KVM: guest_memfd: Ensure pages are not in use before conversion Ackerley Tng via B4 Relay
2026-06-19  0:31 ` [PATCH v8 15/46] KVM: guest_memfd: Call arch invalidate hooks on conversion Ackerley Tng via B4 Relay
2026-06-19 10:09   ` Fuad Tabba
2026-06-23  1:15     ` Sean Christopherson
2026-06-19  0:31 ` [PATCH v8 16/46] KVM: guest_memfd: Return early if range already has requested attributes Ackerley Tng via B4 Relay
2026-06-19  0:31 ` [PATCH v8 17/46] KVM: guest_memfd: Advertise KVM_SET_MEMORY_ATTRIBUTES2 ioctl Ackerley Tng via B4 Relay
2026-06-19 10:35   ` Fuad Tabba
2026-06-19  0:31 ` [PATCH v8 18/46] KVM: guest_memfd: Handle lru_add fbatch refcounts during conversion safety check Ackerley Tng via B4 Relay
2026-06-19  0:31 ` [PATCH v8 19/46] KVM: guest_memfd: Use actual size for invalidation in kvm_gmem_release() Ackerley Tng via B4 Relay
2026-06-19 10:46   ` Fuad Tabba
2026-06-19  0:31 ` [PATCH v8 20/46] KVM: guest_memfd: Determine invalidation filter from memory attributes Ackerley Tng via B4 Relay
2026-06-19  0:31 ` [PATCH v8 21/46] KVM: guest_memfd: Zero page while getting pfn Ackerley Tng via B4 Relay
2026-06-19 10:51   ` Fuad Tabba
2026-06-19  0:31 ` [PATCH v8 22/46] KVM: SEV: Make 'uaddr' parameter optional for KVM_SEV_SNP_LAUNCH_UPDATE Ackerley Tng via B4 Relay
2026-06-19 11:01   ` Fuad Tabba
2026-06-19  0:32 ` [PATCH v8 23/46] KVM: TDX: Make source page optional for KVM_TDX_INIT_MEM_REGION Ackerley Tng via B4 Relay
2026-06-19 11:09   ` Fuad Tabba
2026-06-22  7:18     ` Yan Zhao
2026-06-23  1:24     ` Sean Christopherson
2026-06-22  6:57   ` Yan Zhao
2026-06-23  1:22     ` Sean Christopherson
2026-06-23  5:16       ` Yan Zhao
2026-06-19  0:32 ` [PATCH v8 24/46] KVM: guest_memfd: Make in-place conversion the default Ackerley Tng via B4 Relay
2026-06-22  4:53   ` Yan Zhao
2026-06-19  0:32 ` [PATCH v8 25/46] KVM: guest_memfd: Enable INIT_SHARED on guest_memfd for x86 Coco VMs Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 26/46] KVM: selftests: Create gmem fd before "regular" fd when adding memslot Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 27/46] KVM: selftests: Rename guest_memfd{,_offset} to gmem_{fd,offset} Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 28/46] KVM: selftests: Add support for mmap() on guest_memfd in core library Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 29/46] KVM: selftests: Add selftests global for guest memory attributes capability Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 30/46] KVM: selftests: Add helpers for calling ioctls on guest_memfd Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 31/46] KVM: selftests: Test basic single-page conversion flow Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 32/46] KVM: selftests: Test conversion flow when INIT_SHARED Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 33/46] KVM: selftests: Test conversion precision in guest_memfd Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 34/46] KVM: selftests: Test conversion before allocation Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 35/46] KVM: selftests: Convert with allocated folios in different layouts Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 36/46] KVM: selftests: Test that truncation does not change shared/private status Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 37/46] KVM: selftests: Test that shared/private status is consistent across processes Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 38/46] KVM: selftests: Add helpers to pin pages with CONFIG_GUP_TEST Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 39/46] KVM: selftests: Test conversion with elevated page refcount Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 40/46] KVM: selftests: Reset shared memory after hole-punching Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 41/46] KVM: selftests: Provide function to look up guest_memfd details from gpa Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 42/46] KVM: selftests: Provide common function to set memory attributes Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 43/46] KVM: selftests: Check fd/flags provided to mmap() when setting up memslot Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 44/46] KVM: selftests: Make TEST_EXPECT_SIGBUS thread-safe Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 45/46] KVM: selftests: Update private_mem_conversions_test to mmap() guest_memfd Ackerley Tng via B4 Relay
2026-06-19  0:32 ` [PATCH v8 46/46] KVM: selftests: Update private memory exits test to work with per-gmem attributes Ackerley Tng via B4 Relay
2026-06-19 12:28 ` [PATCH v8 00/46] guest_memfd: In-place conversion support Garg, Shivank
2026-06-23  2:39 ` Xiaoyao Li

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