diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2023-10-11 23:50:02 +0100 |
|---|---|---|
| committer | David Woodhouse <dwmw@amazon.co.uk> | 2023-11-07 08:54:20 +0000 |
| commit | 8473607bcfef62fd8f6bb98b27807bbfce30a81a (patch) | |
| tree | 09771965e27ba579deebbe7866adf1aeb8a1c1bf /target/i386 | |
| parent | 8ac98aeddaac1778e7c725609f1fd5eaa38e2285 (diff) | |
i386/xen: advertise XEN_HVM_CPUID_UPCALL_VECTOR in CPUID
This will allow Linux guests (since v6.0) to use the per-vCPU upcall
vector delivered as MSI through the local APIC.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Diffstat (limited to 'target/i386')
| -rw-r--r-- | target/i386/kvm/kvm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 770e81d56e..11b8177eff 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -1837,6 +1837,10 @@ int kvm_arch_init_vcpu(CPUState *cs) c->eax |= XEN_HVM_CPUID_VCPU_ID_PRESENT; c->ebx = cs->cpu_index; } + + if (cs->kvm_state->xen_version >= XEN_VERSION(4, 17)) { + c->eax |= XEN_HVM_CPUID_UPCALL_VECTOR; + } } r = kvm_xen_init_vcpu(cs); |