diff options
Diffstat (limited to 'target/i386/kvm/xen-emu.c')
| -rw-r--r-- | target/i386/kvm/xen-emu.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c index 4883b95d9d..476f464ee2 100644 --- a/target/i386/kvm/xen-emu.c +++ b/target/i386/kvm/xen-emu.c @@ -10,10 +10,12 @@ */ #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) { @@ -84,3 +86,45 @@ uint32_t kvm_xen_get_caps(void) { 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; +} |