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Debug: Add one hypercall to quary hardware info

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acrntrace/log kernel modules will use this hypercall to fetch
pcpu num of hardware platform. Then, initialize driver accordingly.

Tracked-On: #1775;#1776
Signed-off-by: Kaige Fu <kaige.fu@intel.com>
Reviewed-by: Yan, Like <like.yan@intel.com>
This commit is contained in:
Kaige Fu
2018-12-06 16:13:35 +00:00
committed by wenlingz
parent 81a9de6067
commit 1e3358fd92
2 changed files with 41 additions and 0 deletions
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32
hypervisor/debug/hypercall.c
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@@ -122,6 +122,34 @@ static int32_t hcall_setup_hv_npk_log(struct acrn_vm *vm, uint64_t param)
return 0;
}
/**
* @brief Get hardware related info
*
* @param vm Pointer to vm data structure
* @param param Guest physical address pointing to struct acrn_hw_info
*
* @pre vm shall point to VM0
* @pre param shall be a valid physical address
*
* @retval 0 on success
* @retval -1 in case of error
*/
static int32_t hcall_get_hw_info(struct acrn_vm *vm, uint64_t param)
{
int32_t ret = 0;
struct acrn_hw_info hw_info;
(void)memset((void *)&hw_info, 0U, sizeof(hw_info));
hw_info.cpu_num = phys_cpu_num;
ret = copy_to_gpa(vm, &hw_info, param, sizeof(hw_info));
if (ret != 0) {
pr_err("%s: Unable to copy param to vm", __func__);
}
return ret;
}
/**
* @brief Setup hypervisor debug infrastructure, such as share buffer, NPK log and profiling.
*
@@ -151,6 +179,10 @@ int32_t hcall_debug(struct acrn_vm *vm, uint64_t param1, uint64_t param2, uint64
ret = hcall_profiling_ops(vm, param1, param2);
break;
case HC_GET_HW_INFO:
ret = hcall_get_hw_info(vm, param1);
break;
default:
pr_err("op %d: Invalid hypercall\n", hypcall_id);
ret = -EPERM;