TELEMETRY_HCALL = 0x3001, // no args
BALLOON_START_HCALL = 0xba00, // RAX: size
BALLOON_QUERY_HCALL = 0xba01, // RCX: req_pgs(out), RDX: alloc_pgs(out)
- OS_DEBUG_HCALL = 0xc0c0 // RBX: msg_gpa, RCX: msg_len, RDX: buf_is_va (flag)
+ OS_DEBUG_HCALL = 0xc0c0, // RBX: msg_gpa, RCX: msg_len, RDX: buf_is_va (flag)
+ TIME_CPUFREQ_HCALL = 0xd000 //RCX: cpu freq (out)
} hcall_id_t;
#include <palacios/vmm.h>
#include <palacios/vm_guest.h>
+static int handle_cpufreq_hcall(struct guest_info * info, uint_t hcall_id, void * priv_data) {
+ struct vm_time * time_state = &(info->time_state);
+
+ info->vm_regs.rbx = time_state->cpu_freq;
+
+ PrintDebug("Guest request cpu frequency: return %ld\n", (long)info->vm_regs.rbx);
+
+ return 0;
+}
+
+
+
void v3_init_time(struct guest_info * info) {
struct vm_time * time_state = &(info->time_state);
INIT_LIST_HEAD(&(time_state->timers));
time_state->num_timers = 0;
+
+ v3_register_hypercall(info->vm_info, TIME_CPUFREQ_HCALL, handle_cpufreq_hcall, NULL);
}