diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2022-12-13 13:29:46 +0000 |
|---|---|---|
| committer | David Woodhouse <dwmw@amazon.co.uk> | 2023-03-01 08:22:50 +0000 |
| commit | 4858ba2065c8bddf7f1c056eda3a5357588bdd50 (patch) | |
| tree | 7b6372327ef6e422d4edbdeff273a8a315563f94 /target/i386 | |
| parent | 27d4075dd88a3c558fdc2da13b95915c1b6c66c9 (diff) | |
hw/xen: Implement EVTCHNOP_status
This adds the basic structure for maintaining the port table and reporting
the status of ports therein.
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/xen-emu.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c index 1b319e8bad..45fac5ea03 100644 --- a/target/i386/kvm/xen-emu.c +++ b/target/i386/kvm/xen-emu.c @@ -776,9 +776,10 @@ static bool kvm_xen_hcall_vcpu_op(struct kvm_xen_exit *exit, X86CPU *cpu, return true; } -static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exit *exit, +static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exit *exit, X86CPU *cpu, int cmd, uint64_t arg) { + CPUState *cs = CPU(cpu); int err = -ENOSYS; switch (cmd) { @@ -789,6 +790,21 @@ static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exit *exit, err = -ENOSYS; break; + case EVTCHNOP_status: { + struct evtchn_status status; + + qemu_build_assert(sizeof(status) == 24); + if (kvm_copy_from_gva(cs, arg, &status, sizeof(status))) { + err = -EFAULT; + break; + } + + err = xen_evtchn_status_op(&status); + if (!err && kvm_copy_to_gva(cs, arg, &status, sizeof(status))) { + err = -EFAULT; + } + break; + } default: return false; } @@ -914,7 +930,7 @@ static bool do_kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit) return kvm_xen_hcall_sched_op(exit, cpu, exit->u.hcall.params[0], exit->u.hcall.params[1]); case __HYPERVISOR_event_channel_op: - return kvm_xen_hcall_evtchn_op(exit, exit->u.hcall.params[0], + return kvm_xen_hcall_evtchn_op(exit, cpu, exit->u.hcall.params[0], exit->u.hcall.params[1]); case __HYPERVISOR_vcpu_op: return kvm_xen_hcall_vcpu_op(exit, cpu, |