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hv: add new hypercall to fetch platform configurations

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add new hypercall get platform information,
 such as physical CPU number.

Tracked-On: #2538
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yonghua Huang
2019-02-15 19:57:36 +08:00
committed by Eddie Dong
parent e216f3060c
commit 46480f6e23
4 changed files with 66 additions and 0 deletions
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27
hypervisor/common/hypercall.c
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@@ -102,6 +102,33 @@ int32_t hcall_get_api_version(struct acrn_vm *vm, uint64_t param)
return ret;
}
/**
* @brief Get basic platform information.
*
* The function returns basic hardware or configuration information
* for the current platform.
*
* @param vm Pointer to VM data structure.
* @param param GPA pointer to struct hc_platform_info.
*
* @pre Pointer vm shall point to SOS_VM
* @return 0 on success, -1 in case of error.
*/
int32_t hcall_get_platform_info(struct acrn_vm *vm, uint64_t param)
{
int32_t ret = 0;
struct hc_platform_info platform_info;
platform_info.cpu_num = get_pcpu_nums();
platform_info.max_vcpus_per_vm = CONFIG_MAX_VCPUS_PER_VM;
if (copy_to_gpa(vm, &platform_info, param, sizeof(platform_info)) != 0) {
pr_err("%s: Unable copy param to vm\n", __func__);
ret = -1;
}
return ret;
}
/**
* @brief create virtual machine
*