assert(run->msr.reason == KVM_MSR_EXIT_REASON_FILTER);
ret = kvm_handle_wrmsr(cpu, run);
break;
+#ifdef CONFIG_XEN_EMU
+ case KVM_EXIT_XEN:
+ ret = kvm_xen_handle_exit(cpu, &run->xen);
+ break;
+#endif
default:
fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason);
ret = -1;
kvm_x86_add_msi_route(int virq) "Adding route entry for virq %d"
kvm_x86_remove_msi_route(int virq) "Removing route entry for virq %d"
kvm_x86_update_msi_routes(int num) "Updated %d MSI routes"
+
+# xen-emu.c
+kvm_xen_hypercall(int cpu, uint8_t cpl, uint64_t input, uint64_t a0, uint64_t a1, uint64_t a2, uint64_t ret) "xen_hypercall: cpu %d cpl %d input %" PRIu64 " a0 0x%" PRIx64 " a1 0x%" PRIx64 " a2 0x%" PRIx64" ret 0x%" PRIx64
*/
#include "qemu/osdep.h"
+#include "qemu/log.h"
#include "sysemu/kvm_int.h"
#include "sysemu/kvm_xen.h"
#include "kvm/kvm_i386.h"
#include "xen-emu.h"
+#include "trace.h"
int kvm_xen_init(KVMState *s, uint32_t hypercall_msr)
{
{
return kvm_state->xen_caps;
}
+
+static bool do_kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit)
+{
+ uint16_t code = exit->u.hcall.input;
+
+ if (exit->u.hcall.cpl > 0) {
+ exit->u.hcall.result = -EPERM;
+ return true;
+ }
+
+ switch (code) {
+ default:
+ return false;
+ }
+}
+
+int kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit)
+{
+ if (exit->type != KVM_EXIT_XEN_HCALL) {
+ return -1;
+ }
+
+ if (!do_kvm_xen_handle_exit(cpu, exit)) {
+ /*
+ * Some hypercalls will be deliberately "implemented" by returning
+ * -ENOSYS. This case is for hypercalls which are unexpected.
+ */
+ exit->u.hcall.result = -ENOSYS;
+ qemu_log_mask(LOG_UNIMP, "Unimplemented Xen hypercall %"
+ PRId64 " (0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 ")\n",
+ (uint64_t)exit->u.hcall.input,
+ (uint64_t)exit->u.hcall.params[0],
+ (uint64_t)exit->u.hcall.params[1],
+ (uint64_t)exit->u.hcall.params[2]);
+ }
+
+ trace_kvm_xen_hypercall(CPU(cpu)->cpu_index, exit->u.hcall.cpl,
+ exit->u.hcall.input, exit->u.hcall.params[0],
+ exit->u.hcall.params[1], exit->u.hcall.params[2],
+ exit->u.hcall.result);
+ return 0;
+}