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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>
This commit is contained in:
Joao Martins 2018-06-18 12:21:57 -04:00 committed by David Woodhouse
parent 782a79601e
commit 671bfdcd47
1 changed files with 17 additions and 0 deletions
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17
target/i386/kvm/xen-emu.c
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@ -26,6 +26,7 @@
#include "hw/xen/interface/version.h"
#include "hw/xen/interface/sched.h"
#include "hw/xen/interface/memory.h"
#include "hw/xen/interface/hvm/hvm_op.h"
#include "xen-compat.h"
@ -349,6 +350,19 @@ static bool kvm_xen_hcall_memory_op(struct kvm_xen_exit *exit, X86CPU *cpu,
return true;
}
static bool kvm_xen_hcall_hvm_op(struct kvm_xen_exit *exit, X86CPU *cpu,
int cmd, uint64_t arg)
{
switch (cmd) {
case HVMOP_pagetable_dying:
exit->u.hcall.result = -ENOSYS;
return true;
default:
return false;
}
}
int kvm_xen_soft_reset(void)
{
int err;
@ -450,6 +464,9 @@ static bool do_kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit)
case __HYPERVISOR_sched_op:
return kvm_xen_hcall_sched_op(exit, cpu, exit->u.hcall.params[0],
exit->u.hcall.params[1]);
case __HYPERVISOR_hvm_op:
return kvm_xen_hcall_hvm_op(exit, cpu, exit->u.hcall.params[0],
exit->u.hcall.params[1]);
case __HYPERVISOR_memory_op:
return kvm_xen_hcall_memory_op(exit, cpu, exit->u.hcall.params[0],
exit->u.hcall.params[1]);