From: Sean Christopherson <seanjc@google.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, Kiryl Shutsemau <kas@kernel.org>,
Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev,
kvm@vger.kernel.org, Chao Gao <chao.gao@intel.com>,
Dan Williams <dan.j.williams@intel.com>
Subject: [PATCH v2 7/7] KVM: Bury kvm_{en,dis}able_virtualization() in kvm_main.c once more
Date: Fri, 5 Dec 2025 17:10:54 -0800 [thread overview]
Message-ID: <20251206011054.494190-8-seanjc@google.com> (raw)
In-Reply-To: <20251206011054.494190-1-seanjc@google.com>
Now that TDX handles doing VMXON without KVM's involvement, bury the
top-level APIs to enable and disable virtualization back in kvm_main.c.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
include/linux/kvm_host.h | 8 --------
virt/kvm/kvm_main.c | 17 +++++++++++++----
2 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index a453fe6ce05a..ac9332104793 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -2596,12 +2596,4 @@ long kvm_arch_vcpu_pre_fault_memory(struct kvm_vcpu *vcpu,
struct kvm_pre_fault_memory *range);
#endif
-#ifdef CONFIG_KVM_GENERIC_HARDWARE_ENABLING
-int kvm_enable_virtualization(void);
-void kvm_disable_virtualization(void);
-#else
-static inline int kvm_enable_virtualization(void) { return 0; }
-static inline void kvm_disable_virtualization(void) { }
-#endif
-
#endif
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 3278ee9381bd..ac2633e9cd80 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1111,6 +1111,9 @@ static inline struct kvm_io_bus *kvm_get_bus_for_destruction(struct kvm *kvm,
!refcount_read(&kvm->users_count));
}
+static int kvm_enable_virtualization(void);
+static void kvm_disable_virtualization(void);
+
static struct kvm *kvm_create_vm(unsigned long type, const char *fdname)
{
struct kvm *kvm = kvm_arch_alloc_vm();
@@ -5693,7 +5696,7 @@ static struct syscore_ops kvm_syscore_ops = {
.shutdown = kvm_shutdown,
};
-int kvm_enable_virtualization(void)
+static int kvm_enable_virtualization(void)
{
int r;
@@ -5738,9 +5741,8 @@ int kvm_enable_virtualization(void)
--kvm_usage_count;
return r;
}
-EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_enable_virtualization);
-void kvm_disable_virtualization(void)
+static void kvm_disable_virtualization(void)
{
guard(mutex)(&kvm_usage_lock);
@@ -5751,7 +5753,6 @@ void kvm_disable_virtualization(void)
cpuhp_remove_state(CPUHP_AP_KVM_ONLINE);
kvm_arch_disable_virtualization();
}
-EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_disable_virtualization);
static int kvm_init_virtualization(void)
{
@@ -5767,6 +5768,14 @@ static void kvm_uninit_virtualization(void)
kvm_disable_virtualization();
}
#else /* CONFIG_KVM_GENERIC_HARDWARE_ENABLING */
+static int kvm_enable_virtualization(void)
+{
+ return 0;
+}
+static void kvm_disable_virtualization(void)
+{
+
+}
static int kvm_init_virtualization(void)
{
return 0;
--
2.52.0.223.gf5cc29aaa4-goog
next prev parent reply other threads:[~2025-12-06 1:11 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-06 1:10 [PATCH v2 0/7] KVM: x86/tdx: Have TDX handle VMXON during bringup Sean Christopherson
2025-12-06 1:10 ` [PATCH v2 1/7] KVM: x86: Move kvm_rebooting to x86 Sean Christopherson
2025-12-09 7:46 ` Chao Gao
2026-01-05 17:48 ` Dave Hansen
2025-12-06 1:10 ` [PATCH v2 2/7] KVM: x86: Extract VMXON and EFER.SVME enablement to kernel Sean Christopherson
2025-12-07 7:22 ` dan.j.williams
2025-12-09 20:01 ` Sean Christopherson
2025-12-10 7:41 ` dan.j.williams
2025-12-10 14:20 ` Sean Christopherson
2025-12-24 11:07 ` Xu Yilun
2025-12-30 22:59 ` Sean Christopherson
2025-12-09 5:48 ` Chao Gao
2025-12-17 6:57 ` Xu Yilun
2025-12-17 19:01 ` Sean Christopherson
2025-12-19 2:14 ` Xu Yilun
2025-12-19 15:40 ` Sean Christopherson
2025-12-19 17:30 ` Dave Hansen
2025-12-19 21:12 ` Huang, Kai
2026-01-27 2:46 ` Binbin Wu
2025-12-19 17:45 ` Dave Hansen
2025-12-19 18:35 ` Sean Christopherson
2025-12-19 18:48 ` Dave Hansen
2025-12-06 1:10 ` [PATCH v2 3/7] KVM: x86/tdx: Do VMXON and TDX-Module initialization during subsys init Sean Christopherson
2025-12-07 7:25 ` dan.j.williams
2025-12-08 23:17 ` Sean Christopherson
2025-12-09 1:34 ` dan.j.williams
2025-12-09 7:06 ` Chao Gao
2025-12-12 18:56 ` Sean Christopherson
2025-12-06 1:10 ` [PATCH v2 4/7] x86/virt/tdx: Tag a pile of functions as __init, and globals as __ro_after_init Sean Christopherson
2025-12-09 4:17 ` dan.j.williams
2025-12-09 7:26 ` Chao Gao
2025-12-06 1:10 ` [PATCH v2 5/7] x86/virt/tdx: KVM: Consolidate TDX CPU hotplug handling Sean Christopherson
2025-12-09 4:19 ` dan.j.williams
2025-12-06 1:10 ` [PATCH v2 6/7] x86/virt/tdx: Use ida_is_empty() to detect if any TDs may be running Sean Christopherson
2025-12-09 4:19 ` dan.j.williams
2025-12-09 7:33 ` Chao Gao
2025-12-06 1:10 ` Sean Christopherson [this message]
2025-12-09 4:20 ` [PATCH v2 7/7] KVM: Bury kvm_{en,dis}able_virtualization() in kvm_main.c once more dan.j.williams
2025-12-09 7:37 ` Chao Gao
2025-12-08 2:49 ` [PATCH v2 0/7] KVM: x86/tdx: Have TDX handle VMXON during bringup Chao Gao
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