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Message-ID: <20241101183555.1794700-6-seanjc@google.com>
Date: Fri, 1 Nov 2024 11:35:51 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
Kai Huang <kai.huang@...el.com>
Subject: [PATCH v2 5/9] KVM: x86: Move kvm_set_apic_base() implementation to
lapic.c (from x86.c)
Move kvm_set_apic_base() to lapic.c so that the bulk of KVM's local APIC
code resides in lapic.c, regardless of whether or not KVM is emulating the
local APIC in-kernel. This will also allow making various helpers visible
only to lapic.c.
No functional change intended.
Reviewed-by: Kai Huang <kai.huang@...el.com>
Reviewed-by: Paolo Bonzini <pbonzini@...hat.com>
Link: https://lore.kernel.org/r/20241009181742.1128779-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@...gle.com>
---
arch/x86/kvm/lapic.c | 21 +++++++++++++++++++++
arch/x86/kvm/x86.c | 21 ---------------------
2 files changed, 21 insertions(+), 21 deletions(-)
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 9f88a49654b0..b4cc5b0e8796 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -2628,6 +2628,27 @@ void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value)
}
}
+int kvm_set_apic_base(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+{
+ enum lapic_mode old_mode = kvm_get_apic_mode(vcpu);
+ enum lapic_mode new_mode = kvm_apic_mode(msr_info->data);
+ u64 reserved_bits = kvm_vcpu_reserved_gpa_bits_raw(vcpu) | 0x2ff |
+ (guest_cpuid_has(vcpu, X86_FEATURE_X2APIC) ? 0 : X2APIC_ENABLE);
+
+ if ((msr_info->data & reserved_bits) != 0 || new_mode == LAPIC_MODE_INVALID)
+ return 1;
+ if (!msr_info->host_initiated) {
+ if (old_mode == LAPIC_MODE_X2APIC && new_mode == LAPIC_MODE_XAPIC)
+ return 1;
+ if (old_mode == LAPIC_MODE_DISABLED && new_mode == LAPIC_MODE_X2APIC)
+ return 1;
+ }
+
+ kvm_lapic_set_base(vcpu, msr_info->data);
+ kvm_recalculate_apic_map(vcpu->kvm);
+ return 0;
+}
+
void kvm_apic_update_apicv(struct kvm_vcpu *vcpu)
{
struct kvm_lapic *apic = vcpu->arch.apic;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 95af45542355..57dca2bdd40d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -668,27 +668,6 @@ static void drop_user_return_notifiers(void)
kvm_on_user_return(&msrs->urn);
}
-int kvm_set_apic_base(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
-{
- enum lapic_mode old_mode = kvm_get_apic_mode(vcpu);
- enum lapic_mode new_mode = kvm_apic_mode(msr_info->data);
- u64 reserved_bits = kvm_vcpu_reserved_gpa_bits_raw(vcpu) | 0x2ff |
- (guest_cpuid_has(vcpu, X86_FEATURE_X2APIC) ? 0 : X2APIC_ENABLE);
-
- if ((msr_info->data & reserved_bits) != 0 || new_mode == LAPIC_MODE_INVALID)
- return 1;
- if (!msr_info->host_initiated) {
- if (old_mode == LAPIC_MODE_X2APIC && new_mode == LAPIC_MODE_XAPIC)
- return 1;
- if (old_mode == LAPIC_MODE_DISABLED && new_mode == LAPIC_MODE_X2APIC)
- return 1;
- }
-
- kvm_lapic_set_base(vcpu, msr_info->data);
- kvm_recalculate_apic_map(vcpu->kvm);
- return 0;
-}
-
/*
* Handle a fault on a hardware virtualization (VMX or SVM) instruction.
*
--
2.47.0.163.g1226f6d8fa-goog
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