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| author | Sean Christopherson <seanjc@google.com> | 2022-11-30 23:09:14 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-12-29 15:41:25 -0500 |
| commit | 58ca1930310a0f45f6250d23e6ea8a09af1a133b (patch) | |
| tree | 35c836dc41d1319aa1da7107a5324c4d535cf36d | |
| parent | a578a0a9e3526483ad1904fac019d95e7089fb34 (diff) | |
| download | linux-stable-58ca1930310a0f45f6250d23e6ea8a09af1a133b.tar.gz linux-stable-58ca1930310a0f45f6250d23e6ea8a09af1a133b.tar.bz2 linux-stable-58ca1930310a0f45f6250d23e6ea8a09af1a133b.zip | |
KVM: VMX: Make VMCS configuration/capabilities structs read-only after init
Tag vmcs_config and vmx_capability structs as __init, the canonical
configuration is generated during hardware_setup() and must never be
modified after that point.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20221130230934.1014142-31-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/vmx/capabilities.h | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 4 |
2 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilities.h index cd2ac9536c99..45162c1bcd8f 100644 --- a/arch/x86/kvm/vmx/capabilities.h +++ b/arch/x86/kvm/vmx/capabilities.h @@ -66,13 +66,13 @@ struct vmcs_config { u64 misc; struct nested_vmx_msrs nested; }; -extern struct vmcs_config vmcs_config; +extern struct vmcs_config vmcs_config __ro_after_init; struct vmx_capability { u32 ept; u32 vpid; }; -extern struct vmx_capability vmx_capability; +extern struct vmx_capability vmx_capability __ro_after_init; static inline bool cpu_has_vmx_basic_inout(void) { diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index e0e3f2c1f681..32ca9c2f2885 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -488,8 +488,8 @@ static DEFINE_PER_CPU(struct list_head, loaded_vmcss_on_cpu); static DECLARE_BITMAP(vmx_vpid_bitmap, VMX_NR_VPIDS); static DEFINE_SPINLOCK(vmx_vpid_lock); -struct vmcs_config vmcs_config; -struct vmx_capability vmx_capability; +struct vmcs_config vmcs_config __ro_after_init; +struct vmx_capability vmx_capability __ro_after_init; #define VMX_SEGMENT_FIELD(seg) \ [VCPU_SREG_##seg] = { \ |