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KVM: x86: Split the APIC from the rest of IRQCHIP.

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First patch in a series which enables the relocation of the
PIC/IOAPIC to userspace.

Adds capability KVM_CAP_SPLIT_IRQCHIP;

KVM_CAP_SPLIT_IRQCHIP enables the construction of LAPICs without the
rest of the irqchip.

Compile tested for x86.

Signed-off-by: Steve Rutherford <srutherford@google.com>
Suggested-by: Andrew Honig <ahonig@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Steve Rutherford
2015-07-29 23:21:40 -07:00
committed by Paolo Bonzini
parent 4ca7dd8ce4
commit 49df6397ed
10 changed files with 75 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/x86/kvm/lapic.c
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@@ -209,7 +209,8 @@ out:
if (old)
kfree_rcu(old, rcu);
kvm_vcpu_request_scan_ioapic(kvm);
if (ioapic_in_kernel(kvm))
kvm_vcpu_request_scan_ioapic(kvm);
}
static inline void apic_set_spiv(struct kvm_lapic *apic, u32 val)
@@ -1845,7 +1846,8 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu,
kvm_x86_ops->hwapic_isr_update(vcpu->kvm,
apic_find_highest_isr(apic));
kvm_make_request(KVM_REQ_EVENT, vcpu);
kvm_rtc_eoi_tracking_restore_one(vcpu);
if (ioapic_in_kernel(vcpu->kvm))
kvm_rtc_eoi_tracking_restore_one(vcpu);
}
void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)