From: Fuad Tabba <tabba@google.com>
To: kvm@vger.kernel.org, linux-arm-msm@vger.kernel.org,
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Subject: [PATCH v11 04/18] KVM: x86: Rename kvm->arch.has_private_mem to kvm->arch.supports_gmem
Date: Thu, 5 Jun 2025 16:37:46 +0100 [thread overview]
Message-ID: <20250605153800.557144-5-tabba@google.com> (raw)
In-Reply-To: <20250605153800.557144-1-tabba@google.com>
The bool has_private_mem is used to indicate whether guest_memfd is
supported. Rename it to supports_gmem to make its meaning clearer and to
decouple memory being private from guest_memfd.
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Shivank Garg <shivankg@amd.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
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 | 4 ++--
arch/x86/kvm/mmu/mmu.c | 2 +-
arch/x86/kvm/svm/svm.c | 4 ++--
arch/x86/kvm/x86.c | 3 +--
4 files changed, 6 insertions(+), 7 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 4a83fbae7056..709cc2a7ba66 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1331,7 +1331,7 @@ struct kvm_arch {
unsigned int indirect_shadow_pages;
u8 mmu_valid_gen;
u8 vm_type;
- bool has_private_mem;
+ bool supports_gmem;
bool has_protected_state;
bool pre_fault_allowed;
struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
@@ -2254,7 +2254,7 @@ void kvm_configure_mmu(bool enable_tdp, int tdp_forced_root_level,
#ifdef CONFIG_KVM_GMEM
-#define kvm_arch_supports_gmem(kvm) ((kvm)->arch.has_private_mem)
+#define kvm_arch_supports_gmem(kvm) ((kvm)->arch.supports_gmem)
#else
#define kvm_arch_supports_gmem(kvm) false
#endif
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index b66f1bf24e06..69bf2ef22ed0 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -3486,7 +3486,7 @@ static bool page_fault_can_be_fast(struct kvm *kvm, struct kvm_page_fault *fault
* on RET_PF_SPURIOUS until the update completes, or an actual spurious
* case might go down the slow path. Either case will resolve itself.
*/
- if (kvm->arch.has_private_mem &&
+ if (kvm->arch.supports_gmem &&
fault->is_private != kvm_mem_is_private(kvm, fault->gfn))
return false;
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index a89c271a1951..a05b7dc7b717 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -5110,8 +5110,8 @@ static int svm_vm_init(struct kvm *kvm)
(type == KVM_X86_SEV_ES_VM || type == KVM_X86_SNP_VM);
to_kvm_sev_info(kvm)->need_init = true;
- kvm->arch.has_private_mem = (type == KVM_X86_SNP_VM);
- kvm->arch.pre_fault_allowed = !kvm->arch.has_private_mem;
+ kvm->arch.supports_gmem = (type == KVM_X86_SNP_VM);
+ kvm->arch.pre_fault_allowed = !kvm->arch.supports_gmem;
}
if (!pause_filter_count || !pause_filter_thresh)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index be7bb6d20129..035ced06b2dd 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -12718,8 +12718,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
return -EINVAL;
kvm->arch.vm_type = type;
- kvm->arch.has_private_mem =
- (type == KVM_X86_SW_PROTECTED_VM);
+ kvm->arch.supports_gmem = (type == KVM_X86_SW_PROTECTED_VM);
/* Decided by the vendor code for other VM types. */
kvm->arch.pre_fault_allowed =
type == KVM_X86_DEFAULT_VM || type == KVM_X86_SW_PROTECTED_VM;
--
2.49.0.1266.g31b7d2e469-goog
next prev parent reply other threads:[~2025-06-05 15:38 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-05 15:37 [PATCH v11 00/18] KVM: Mapping guest_memfd backed memory at the host for software protected VMs Fuad Tabba
2025-06-05 15:37 ` [PATCH v11 01/18] KVM: Rename CONFIG_KVM_PRIVATE_MEM to CONFIG_KVM_GMEM Fuad Tabba
2025-06-05 15:37 ` [PATCH v11 02/18] KVM: Rename CONFIG_KVM_GENERIC_PRIVATE_MEM to CONFIG_KVM_GENERIC_GMEM_POPULATE Fuad Tabba
2025-06-05 15:37 ` [PATCH v11 03/18] KVM: Rename kvm_arch_has_private_mem() to kvm_arch_supports_gmem() Fuad Tabba
2025-06-05 15:37 ` Fuad Tabba [this message]
2025-06-05 15:37 ` [PATCH v11 05/18] KVM: Rename kvm_slot_can_be_private() to kvm_slot_has_gmem() Fuad Tabba
2025-06-05 15:37 ` [PATCH v11 06/18] KVM: Fix comments that refer to slots_lock Fuad Tabba
2025-06-05 15:37 ` [PATCH v11 07/18] KVM: Fix comment that refers to kvm uapi header path Fuad Tabba
2025-06-05 15:37 ` [PATCH v11 08/18] KVM: guest_memfd: Allow host to map guest_memfd pages Fuad Tabba
2025-06-06 9:12 ` David Hildenbrand
2025-06-06 9:30 ` Fuad Tabba
2025-06-06 9:55 ` David Hildenbrand
2025-06-06 10:33 ` Fuad Tabba
2025-06-11 6:29 ` Shivank Garg
2025-06-11 18:20 ` Ackerley Tng
2025-06-08 23:42 ` Gavin Shan
2025-06-05 15:37 ` [PATCH v11 09/18] KVM: guest_memfd: Track shared memory support in memslot Fuad Tabba
2025-06-06 9:13 ` David Hildenbrand
2025-06-08 23:42 ` Gavin Shan
2025-06-05 15:37 ` [PATCH v11 10/18] KVM: x86/mmu: Handle guest page faults for guest_memfd with shared memory Fuad Tabba
2025-06-05 15:37 ` [PATCH v11 11/18] KVM: x86: Consult guest_memfd when computing max_mapping_level Fuad Tabba
2025-06-06 9:14 ` David Hildenbrand
2025-06-06 9:48 ` Fuad Tabba
2025-06-05 15:37 ` [PATCH v11 12/18] KVM: x86: Enable guest_memfd shared memory for SW-protected VMs Fuad Tabba
2025-06-05 15:49 ` David Hildenbrand
2025-06-05 16:11 ` Fuad Tabba
2025-06-05 17:35 ` David Hildenbrand
2025-06-05 17:43 ` Fuad Tabba
2025-06-05 17:45 ` David Hildenbrand
2025-06-05 18:29 ` Fuad Tabba
2025-06-05 15:37 ` [PATCH v11 13/18] KVM: arm64: Refactor user_mem_abort() Fuad Tabba
2025-06-09 0:27 ` Gavin Shan
2025-06-09 7:01 ` Fuad Tabba
2025-06-09 9:02 ` Gavin Shan
2025-06-05 15:37 ` [PATCH v11 14/18] KVM: arm64: Handle guest_memfd-backed guest page faults Fuad Tabba
2025-06-05 17:21 ` James Houghton
2025-06-06 7:31 ` Fuad Tabba
2025-06-06 7:39 ` David Hildenbrand
2025-06-09 4:08 ` Gavin Shan
2025-06-09 7:04 ` Fuad Tabba
2025-06-09 9:06 ` Gavin Shan
2025-06-05 15:37 ` [PATCH v11 15/18] KVM: arm64: Enable host mapping of shared guest_memfd memory Fuad Tabba
2025-06-05 17:26 ` James Houghton
2025-06-09 0:29 ` Gavin Shan
2025-06-05 15:37 ` [PATCH v11 16/18] KVM: Introduce the KVM capability KVM_CAP_GMEM_SHARED_MEM Fuad Tabba
2025-06-05 15:37 ` [PATCH v11 17/18] KVM: selftests: Don't use hardcoded page sizes in guest_memfd test Fuad Tabba
2025-06-06 8:15 ` David Hildenbrand
2025-06-08 23:43 ` Gavin Shan
2025-06-05 15:38 ` [PATCH v11 18/18] KVM: selftests: guest_memfd mmap() test when mapping is allowed Fuad Tabba
2025-06-05 22:07 ` James Houghton
2025-06-05 22:12 ` Sean Christopherson
2025-06-05 22:17 ` James Houghton
2025-06-06 8:14 ` Fuad Tabba
2025-06-08 23:43 ` Gavin Shan
2025-06-09 7:06 ` Fuad Tabba
2025-06-06 9:18 ` [PATCH v11 00/18] KVM: Mapping guest_memfd backed memory at the host for software protected VMs David Hildenbrand
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