i386/xen: implement HYPERVISOR_hvm_op
This is when guest queries for support for HVMOP_pagetable_dying. Signed-off-by: Joao Martins <joao.m.martins@oracle.com> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
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@ -26,6 +26,7 @@
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#include "hw/xen/interface/version.h"
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#include "hw/xen/interface/sched.h"
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#include "hw/xen/interface/memory.h"
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#include "hw/xen/interface/hvm/hvm_op.h"
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#include "xen-compat.h"
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@ -349,6 +350,19 @@ static bool kvm_xen_hcall_memory_op(struct kvm_xen_exit *exit, X86CPU *cpu,
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return true;
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}
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static bool kvm_xen_hcall_hvm_op(struct kvm_xen_exit *exit, X86CPU *cpu,
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int cmd, uint64_t arg)
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{
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switch (cmd) {
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case HVMOP_pagetable_dying:
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exit->u.hcall.result = -ENOSYS;
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return true;
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default:
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return false;
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}
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}
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int kvm_xen_soft_reset(void)
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{
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int err;
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@ -450,6 +464,9 @@ static bool do_kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit)
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case __HYPERVISOR_sched_op:
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return kvm_xen_hcall_sched_op(exit, cpu, exit->u.hcall.params[0],
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exit->u.hcall.params[1]);
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case __HYPERVISOR_hvm_op:
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return kvm_xen_hcall_hvm_op(exit, cpu, exit->u.hcall.params[0],
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exit->u.hcall.params[1]);
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case __HYPERVISOR_memory_op:
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return kvm_xen_hcall_memory_op(exit, cpu, exit->u.hcall.params[0],
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exit->u.hcall.params[1]);
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