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HV Cx: add hypercall function to retrieve host cx

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The patch add function in vhm hypercall to retrieve physical cx data
to VHM/DM.

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>
This commit is contained in:
Victor Sun
2018-04-18 01:00:15 +08:00
committed by Jack Ren
parent 1c3b7a629a
commit ebf184f038
3 changed files with 41 additions and 2 deletions
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34
hypervisor/common/hypercall.c
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@@ -729,6 +729,40 @@ int64_t hcall_get_cpu_pm_state(struct vm *vm, uint64_t cmd, uint64_t param)
return 0;
}
case PMCMD_GET_CX_CNT: {
if (!target_vm->pm.cx_cnt) {
return -1;
}
if (copy_to_vm(vm, &(target_vm->pm.cx_cnt), param)) {
pr_err("%s: Unable copy param to vm\n", __func__);
return -1;
}
return 0;
}
case PMCMD_GET_CX_DATA: {
uint8_t cx_idx;
struct cpu_cx_data *cx_data;
if (!target_vm->pm.cx_cnt) {
return -1;
}
cx_idx = (cmd & PMCMD_STATE_NUM_MASK) >> PMCMD_STATE_NUM_SHIFT;
if (!cx_idx || (cx_idx > target_vm->pm.cx_cnt)) {
return -1;
}
cx_data = target_vm->pm.cx_data + cx_idx;
if (copy_to_vm(vm, cx_data, param)) {
pr_err("%s: Unable copy param to vm\n", __func__);
return -1;
}
return 0;
}
default:
return -1;