diff options
| author |   David Woodhouse <dwmw@amazon.co.uk> | 2022-03-03 15:41:24 +0000 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2022-04-02 05:41:17 -0400 |
| commit | fde0451be8fb3208d4d146b8602d99ee8139e515 (patch) | |
| tree | a6b8d95db243f33f19be2971fff7dc4dc45d9e83 /arch/x86/include/asm/kvm_host.h | |
| parent | KVM: x86/xen: Kernel acceleration for XENVER_version (diff) | |
| download | linux-dev-fde0451be8fb3208d4d146b8602d99ee8139e515.tar.xz linux-dev-fde0451be8fb3208d4d146b8602d99ee8139e515.zip | |
KVM: x86/xen: Support per-vCPU event channel upcall via local APIC
Windows uses a per-vCPU vector, and it's delivered via the local APIC
basically like an MSI (with associated EOI) unlike the traditional
guest-wide vector which is just magically asserted by Xen (and in the
KVM case by kvm_xen_has_interrupt() / kvm_cpu_get_extint()).
Now that the kernel is able to raise event channel events for itself,
being able to do so for Windows guests is also going to be useful.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220303154127.202856-15-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index f3fba9d8ddc6..998caf7a3ce9 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -606,6 +606,7 @@ struct kvm_vcpu_hv { struct kvm_vcpu_xen { u64 hypercall_rip; u32 current_runstate; + u8 upcall_vector; struct gfn_to_pfn_cache vcpu_info_cache; struct gfn_to_pfn_cache vcpu_time_info_cache; struct gfn_to_pfn_cache runstate_cache; |