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From: Fuad Tabba <tabba@google.com>
To: kvm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mm@kvack.org
Cc: pbonzini@redhat.com, chenhuacai@kernel.org, mpe@ellerman.id.au,
	 anup@brainfault.org, paul.walmsley@sifive.com,
	palmer@dabbelt.com,  aou@eecs.berkeley.edu, seanjc@google.com,
	viro@zeniv.linux.org.uk,  brauner@kernel.org,
	willy@infradead.org, akpm@linux-foundation.org,
	 xiaoyao.li@intel.com, yilun.xu@intel.com,
	chao.p.peng@linux.intel.com,  jarkko@kernel.org,
	amoorthy@google.com, dmatlack@google.com,
	 isaku.yamahata@intel.com, mic@digikod.net, vbabka@suse.cz,
	 vannapurve@google.com, ackerleytng@google.com,
	mail@maciej.szmigiero.name,  david@redhat.com,
	michael.roth@amd.com, wei.w.wang@intel.com,
	 liam.merwick@oracle.com, isaku.yamahata@gmail.com,
	 kirill.shutemov@linux.intel.com, suzuki.poulose@arm.com,
	steven.price@arm.com,  quic_eberman@quicinc.com,
	quic_mnalajal@quicinc.com, quic_tsoni@quicinc.com,
	 quic_svaddagi@quicinc.com, quic_cvanscha@quicinc.com,
	 quic_pderrin@quicinc.com, quic_pheragu@quicinc.com,
	catalin.marinas@arm.com,  james.morse@arm.com,
	yuzenghui@huawei.com, oliver.upton@linux.dev,  maz@kernel.org,
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	 roypat@amazon.co.uk, shuah@kernel.org, hch@infradead.org,
	jgg@nvidia.com,  rientjes@google.com, jhubbard@nvidia.com,
	fvdl@google.com, hughd@google.com,  jthoughton@google.com,
	peterx@redhat.com, pankaj.gupta@amd.com,  tabba@google.com
Subject: [PATCH v8 01/13] KVM: Rename CONFIG_KVM_PRIVATE_MEM to CONFIG_KVM_GMEM
Date: Wed, 30 Apr 2025 17:56:43 +0100	[thread overview]
Message-ID: <20250430165655.605595-2-tabba@google.com> (raw)
In-Reply-To: <20250430165655.605595-1-tabba@google.com>

The option KVM_PRIVATE_MEM enables guest_memfd in general. Subsequent
patches add shared memory support to guest_memfd. Therefore, rename it
to KVM_GMEM to make its purpose clearer.

Co-developed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Fuad Tabba <tabba@google.com>
---
 arch/x86/include/asm/kvm_host.h |  2 +-
 include/linux/kvm_host.h        | 10 +++++-----
 virt/kvm/Kconfig                |  8 ++++----
 virt/kvm/Makefile.kvm           |  2 +-
 virt/kvm/kvm_main.c             |  4 ++--
 virt/kvm/kvm_mm.h               |  4 ++--
 6 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 7bc174a1f1cb..52f6f6d08558 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -2253,7 +2253,7 @@ void kvm_configure_mmu(bool enable_tdp, int tdp_forced_root_level,
 		       int tdp_max_root_level, int tdp_huge_page_level);
 
 
-#ifdef CONFIG_KVM_PRIVATE_MEM
+#ifdef CONFIG_KVM_GMEM
 #define kvm_arch_has_private_mem(kvm) ((kvm)->arch.has_private_mem)
 #else
 #define kvm_arch_has_private_mem(kvm) false
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 291d49b9bf05..d6900995725d 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -601,7 +601,7 @@ struct kvm_memory_slot {
 	short id;
 	u16 as_id;
 
-#ifdef CONFIG_KVM_PRIVATE_MEM
+#ifdef CONFIG_KVM_GMEM
 	struct {
 		/*
 		 * Writes protected by kvm->slots_lock.  Acquiring a
@@ -722,7 +722,7 @@ static inline int kvm_arch_vcpu_memslots_id(struct kvm_vcpu *vcpu)
  * Arch code must define kvm_arch_has_private_mem if support for private memory
  * is enabled.
  */
-#if !defined(kvm_arch_has_private_mem) && !IS_ENABLED(CONFIG_KVM_PRIVATE_MEM)
+#if !defined(kvm_arch_has_private_mem) && !IS_ENABLED(CONFIG_KVM_GMEM)
 static inline bool kvm_arch_has_private_mem(struct kvm *kvm)
 {
 	return false;
@@ -2504,7 +2504,7 @@ bool kvm_arch_post_set_memory_attributes(struct kvm *kvm,
 
 static inline bool kvm_mem_is_private(struct kvm *kvm, gfn_t gfn)
 {
-	return IS_ENABLED(CONFIG_KVM_PRIVATE_MEM) &&
+	return IS_ENABLED(CONFIG_KVM_GMEM) &&
 	       kvm_get_memory_attributes(kvm, gfn) & KVM_MEMORY_ATTRIBUTE_PRIVATE;
 }
 #else
@@ -2514,7 +2514,7 @@ static inline bool kvm_mem_is_private(struct kvm *kvm, gfn_t gfn)
 }
 #endif /* CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES */
 
-#ifdef CONFIG_KVM_PRIVATE_MEM
+#ifdef CONFIG_KVM_GMEM
 int kvm_gmem_get_pfn(struct kvm *kvm, struct kvm_memory_slot *slot,
 		     gfn_t gfn, kvm_pfn_t *pfn, struct page **page,
 		     int *max_order);
@@ -2527,7 +2527,7 @@ static inline int kvm_gmem_get_pfn(struct kvm *kvm,
 	KVM_BUG_ON(1, kvm);
 	return -EIO;
 }
-#endif /* CONFIG_KVM_PRIVATE_MEM */
+#endif /* CONFIG_KVM_GMEM */
 
 #ifdef CONFIG_HAVE_KVM_ARCH_GMEM_PREPARE
 int kvm_arch_gmem_prepare(struct kvm *kvm, gfn_t gfn, kvm_pfn_t pfn, int max_order);
diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig
index 727b542074e7..49df4e32bff7 100644
--- a/virt/kvm/Kconfig
+++ b/virt/kvm/Kconfig
@@ -112,19 +112,19 @@ config KVM_GENERIC_MEMORY_ATTRIBUTES
        depends on KVM_GENERIC_MMU_NOTIFIER
        bool
 
-config KVM_PRIVATE_MEM
+config KVM_GMEM
        select XARRAY_MULTI
        bool
 
 config KVM_GENERIC_PRIVATE_MEM
        select KVM_GENERIC_MEMORY_ATTRIBUTES
-       select KVM_PRIVATE_MEM
+       select KVM_GMEM
        bool
 
 config HAVE_KVM_ARCH_GMEM_PREPARE
        bool
-       depends on KVM_PRIVATE_MEM
+       depends on KVM_GMEM
 
 config HAVE_KVM_ARCH_GMEM_INVALIDATE
        bool
-       depends on KVM_PRIVATE_MEM
+       depends on KVM_GMEM
diff --git a/virt/kvm/Makefile.kvm b/virt/kvm/Makefile.kvm
index 724c89af78af..8d00918d4c8b 100644
--- a/virt/kvm/Makefile.kvm
+++ b/virt/kvm/Makefile.kvm
@@ -12,4 +12,4 @@ kvm-$(CONFIG_KVM_ASYNC_PF) += $(KVM)/async_pf.o
 kvm-$(CONFIG_HAVE_KVM_IRQ_ROUTING) += $(KVM)/irqchip.o
 kvm-$(CONFIG_HAVE_KVM_DIRTY_RING) += $(KVM)/dirty_ring.o
 kvm-$(CONFIG_HAVE_KVM_PFNCACHE) += $(KVM)/pfncache.o
-kvm-$(CONFIG_KVM_PRIVATE_MEM) += $(KVM)/guest_memfd.o
+kvm-$(CONFIG_KVM_GMEM) += $(KVM)/guest_memfd.o
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index e85b33a92624..4996cac41a8f 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -4842,7 +4842,7 @@ static int kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg)
 	case KVM_CAP_MEMORY_ATTRIBUTES:
 		return kvm_supported_mem_attributes(kvm);
 #endif
-#ifdef CONFIG_KVM_PRIVATE_MEM
+#ifdef CONFIG_KVM_GMEM
 	case KVM_CAP_GUEST_MEMFD:
 		return !kvm || kvm_arch_has_private_mem(kvm);
 #endif
@@ -5276,7 +5276,7 @@ static long kvm_vm_ioctl(struct file *filp,
 	case KVM_GET_STATS_FD:
 		r = kvm_vm_ioctl_get_stats_fd(kvm);
 		break;
-#ifdef CONFIG_KVM_PRIVATE_MEM
+#ifdef CONFIG_KVM_GMEM
 	case KVM_CREATE_GUEST_MEMFD: {
 		struct kvm_create_guest_memfd guest_memfd;
 
diff --git a/virt/kvm/kvm_mm.h b/virt/kvm/kvm_mm.h
index acef3f5c582a..ec311c0d6718 100644
--- a/virt/kvm/kvm_mm.h
+++ b/virt/kvm/kvm_mm.h
@@ -67,7 +67,7 @@ static inline void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm,
 }
 #endif /* HAVE_KVM_PFNCACHE */
 
-#ifdef CONFIG_KVM_PRIVATE_MEM
+#ifdef CONFIG_KVM_GMEM
 void kvm_gmem_init(struct module *module);
 int kvm_gmem_create(struct kvm *kvm, struct kvm_create_guest_memfd *args);
 int kvm_gmem_bind(struct kvm *kvm, struct kvm_memory_slot *slot,
@@ -91,6 +91,6 @@ static inline void kvm_gmem_unbind(struct kvm_memory_slot *slot)
 {
 	WARN_ON_ONCE(1);
 }
-#endif /* CONFIG_KVM_PRIVATE_MEM */
+#endif /* CONFIG_KVM_GMEM */
 
 #endif /* __KVM_MM_H__ */
-- 
2.49.0.901.g37484f566f-goog



  reply	other threads:[~2025-04-30 16:57 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-30 16:56 [PATCH v8 00/13] KVM: Mapping guest_memfd backed memory at the host for software protected VMs Fuad Tabba
2025-04-30 16:56 ` Fuad Tabba [this message]
2025-05-01 17:38   ` [PATCH v8 01/13] KVM: Rename CONFIG_KVM_PRIVATE_MEM to CONFIG_KVM_GMEM Ira Weiny
2025-04-30 16:56 ` [PATCH v8 02/13] KVM: Rename CONFIG_KVM_GENERIC_PRIVATE_MEM to CONFIG_KVM_GENERIC_GMEM_POPULATE Fuad Tabba
2025-05-01 18:10   ` Ira Weiny
2025-05-02  6:44     ` David Hildenbrand
2025-05-02 14:24       ` Ira Weiny
2025-04-30 16:56 ` [PATCH v8 03/13] KVM: Rename kvm_arch_has_private_mem() to kvm_arch_supports_gmem() Fuad Tabba
2025-05-01 18:18   ` Ira Weiny
2025-04-30 16:56 ` [PATCH v8 04/13] KVM: x86: Rename kvm->arch.has_private_mem to kvm->arch.supports_gmem Fuad Tabba
2025-05-01 18:19   ` Ira Weiny
2025-04-30 16:56 ` [PATCH v8 05/13] KVM: Rename kvm_slot_can_be_private() to kvm_slot_has_gmem() Fuad Tabba
2025-05-01 21:37   ` Ira Weiny
2025-04-30 16:56 ` [PATCH v8 06/13] KVM: x86: Generalize private fault lookups to guest_memfd fault lookups Fuad Tabba
2025-04-30 18:58   ` Ackerley Tng
2025-05-01  9:53     ` Fuad Tabba
2025-05-02 15:04     ` David Hildenbrand
2025-05-02 16:21       ` Sean Christopherson
2025-05-02 22:00         ` Ackerley Tng
2025-05-05  8:01           ` David Hildenbrand
2025-05-05 22:57             ` Sean Christopherson
2025-05-06  5:17               ` Vishal Annapurve
2025-05-06  5:28                 ` Vishal Annapurve
2025-05-06 13:58                   ` Sean Christopherson
2025-05-06 14:15                     ` David Hildenbrand
2025-05-06 20:46                       ` Ackerley Tng
2025-05-08 14:12                         ` Sean Christopherson
2025-05-08 14:46                         ` David Hildenbrand
2025-05-09 21:04                         ` James Houghton
2025-05-09 22:29                           ` David Hildenbrand
2025-05-09 22:38                             ` James Houghton
2025-05-06 19:27               ` Ackerley Tng
2025-05-05 23:09             ` Ackerley Tng
2025-05-05 23:17               ` Sean Christopherson
2025-05-01 21:38   ` Ira Weiny
2025-04-30 16:56 ` [PATCH v8 07/13] KVM: Fix comments that refer to slots_lock Fuad Tabba
2025-04-30 21:30   ` David Hildenbrand
2025-05-01 21:43   ` Ira Weiny
2025-05-02 12:07     ` Fuad Tabba
2025-04-30 16:56 ` [PATCH v8 08/13] KVM: guest_memfd: Allow host to map guest_memfd() pages Fuad Tabba
2025-04-30 21:33   ` David Hildenbrand
2025-05-01  8:07     ` Fuad Tabba
2025-05-02 15:11   ` David Hildenbrand
2025-05-02 22:06     ` Ackerley Tng
2025-05-02 22:29   ` Ackerley Tng
2025-05-06  8:47     ` Yan Zhao
2025-05-05 21:06   ` Ira Weiny
2025-05-06 12:15     ` Fuad Tabba
2025-05-09 20:54   ` James Houghton
2025-05-11  8:03     ` David Hildenbrand
2025-05-12  7:08       ` Fuad Tabba
2025-05-12 19:29         ` James Houghton
2025-05-12  7:46       ` Roy, Patrick
2025-04-30 16:56 ` [PATCH v8 09/13] KVM: arm64: Refactor user_mem_abort() calculation of force_pte Fuad Tabba
2025-04-30 21:35   ` David Hildenbrand
2025-04-30 16:56 ` [PATCH v8 10/13] KVM: arm64: Handle guest_memfd()-backed guest page faults Fuad Tabba
2025-05-09 20:15   ` James Houghton
2025-05-12  7:07     ` Fuad Tabba
2025-04-30 16:56 ` [PATCH v8 11/13] KVM: arm64: Enable mapping guest_memfd in arm64 Fuad Tabba
2025-05-09 21:08   ` James Houghton
2025-05-12  6:55     ` Fuad Tabba
2025-04-30 16:56 ` [PATCH v8 12/13] KVM: x86: KVM_X86_SW_PROTECTED_VM to support guest_memfd shared memory Fuad Tabba
2025-04-30 16:56 ` [PATCH v8 13/13] KVM: guest_memfd: selftests: guest_memfd mmap() test when mapping is allowed Fuad Tabba

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