Commit Graph

845 Commits

Author SHA1 Message Date
Yonghua Huang
a6bc36f8ed HV: refine shell.c & shell_priv.h
- move local functions declarations to shell.c
- remove 'name' field in 'struct shell' as i/o
  session s/w layer is deprecated.

Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-14 09:54:48 +08:00
Yonghua Huang
28c8923084 HV: rename 'shell_internal.h' to 'shell_priv.h'
- to align the coding style in hypervisor

Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-14 09:54:48 +08:00
Yang, Yu-chu
2fbf70780e HV: Logical conjunction needs brackets
The bracket is required when the level of precedence of
the operators is less than 13. Add the bracket to logical
conjunctions. The commit applys the rule to the files under

Signed-off-by: Yang, Yu-chu <yu-chu.yang@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2018-08-14 09:53:32 +08:00
Yang, Yu-chu
6f1c5fa007 HV: Logical conjunction needs brackets under /arch/x86/guest
The bracket is required when the level of precedence of
the operators is less than 13. Add the bracket to logical
conjunctions. The commit applys the rule to the files under
hypervisor/arch/x86/guest/*

Signed-off-by: Yang, Yu-chu <yu-chu.yang@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2018-08-14 09:53:32 +08:00
Minggui Cao
462284fa7d HV: add pcpu id check before send IPI
to avoid send IPI to self, also improve the related code:
1. get_cpu_id is uint16_t now
2. MISRA-C requirement. like add {}

Signed-off-by: Minggui Cao <minggui.cao@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-13 14:07:30 +08:00
Sainath Grandhi
c25a62e5b0 hv: Create E820 entries for OS in partitioning mode ACRN
1) This patch creates static E820 entries for VMs launced by ACRN in
partition mode.
2) Moves vm_description entries from bsp/sbl/ to partition/
3) Removes unused API get_vm_desc_base

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-13 13:58:32 +08:00
Edwin Zhai
ab2961473f HV: VMX reshuffle: put EPT check before enabling
Current EPT check runs after EPT enabling in init_exec_ctrl. This
patch fixes wrong order.

Signed-off-by: Edwin Zhai <edwin.zhai@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-13 11:12:46 +08:00
Sainath Grandhi
112b4eaa42 hv: Fixing build issue with PARTITION_MODE
Modified the vector MACRO that is failing build with PARTITION_MODE selected

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-13 09:57:08 +08:00
Sainath Grandhi
7380c167ed hv: Add vuart flag to VM descriptions in partition mode
ACRN in partition mode emulates UART for the VMs directly launced
from HV. This patch adds an option to enable/disable vUART for a
VM.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-13 09:34:35 +08:00
Sainath Grandhi
9e02ef54c7 hv: Partition mode ACRN -kernel load and bootargs load address
For Partition mode ACRN, kernel load address and Boot args load address
are hardcoded. Boot args are currently passed from vm description for
each VM. Renamed init_vm0_boot_info to init_vm_boot_info.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-13 09:34:02 +08:00
Shiqing Gao
4e99afcc2f hv: treewide: fix 'Empty parameter list to procedure/function'
Use func(void) rather than func() for the function declaration and
definition based on MISRAC requirement.

Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
2018-08-13 09:28:12 +08:00
Yonghua Huang
fc2701db45 HV: move vioapic.c & vpic.c to 'dm' folder
- 'hypervisor/dm' holds devices emulation source in hypervisor

Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
2018-08-10 18:50:38 +08:00
Shiqing Gao
98aa74bd6b hv: treewide: fix 'No default case in switch statement'
MISRAC requires that a switch statement shall contain a default clause.

This patch add the default clause and some comments for the ones
violated the rule.

Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-10 16:49:31 +08:00
Sainath Grandhi
42cabf6965 hv: Handling IO exits in ACRN for partition mode
There is no SOS and device model in strict partition mode. ACRN emulates IO for
virtual devices. Any access to IO not backed by HV should return all FFs on read
and writes should be discarded.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-10 10:27:41 +08:00
Sainath Grandhi
a8fcc0fa4b HV: Add vm_id entry to VM description in partitioning mode
ACRN boots multiple OS in partitioning mode. This patch adds code to assign
vm_id in the vm data structure to be same as the one assigned at compile time.
This makes the vm id deterministic for each VM booted from HV directly.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-10 10:26:38 +08:00
Sainath Grandhi
d0e9f244ed hv: Interrupt handling in ACRN partition mode
ACRN in partition mode does not have vector and APIC ID remapping for
device interrupts. Only MSIs are supported. No IOAPIC and legacy interrupts
for the VMs in ACRN partition mode.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-10 10:26:00 +08:00
Sainath Grandhi
0c88f9b800 hv: Build mptable for OS in partition mode
This patch is an extension to the commit 6643adff8b.
It uses the mptable API to build mptable for each VM booted by ACRN in partition mode.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-10 10:22:51 +08:00
Sainath Grandhi
e40b998d21 hv: Add EPT mapping for UOS in partitioning mode
Adding code to map memory for UOS in partitioning mode ACRN.
HPA starting above 4GB is used for UOS memory. Supports only contiguous memory
from host for UOS. Current implementation supports only 2 GB for UOS memory.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-10 10:22:06 +08:00
Yan, Like
c492a14e53 hv: pirq: do not indicate priority when allocate vector
It's not necessary to specify priority for dynamic allocated vector, because
nested irq is not supported on HV, and irq of any priority would cause VM exit.

This commit makes the following changes:
 - remove the argument indicating priority in struct irq_request_info and
   following functions:
    ptdev_activate_entry()
    find_available_vector()
    irq_desc_alloc_vector()
    normal_register_handler()
 - change the macro of vector ranges:
    VECTOR_DYNAMIC_START/END for dynamically allocable vectors;
    VECTOR_FIXED_START/END for fixed allocated vectors, such as vector for
    timer etc.

Signed-off-by: Yan, Like <like.yan@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-10 10:20:31 +08:00
Mingqiang Chi
229bf32eb5 hv:Refine destroy_secure_world API
-- add clear trusty memory flag
  In some cases such as UOS power off or UOS full reset,
  need to clear trusty memory,no need to clear memory such as
  UOS S3 or UOS system reset,then add a flag to distinguish it
  when destroy secure world.
-- Restore trusty memory to guest normal world.
-- Moved free trusty EPT inside destroy_secure_world
  In some cases such as UOS S3 or UOS system reset,
  only need to free trusty EPT, this patch move free
  trusty EPT inside destroy_secure_world.
  Because PD/PT are shared in both secure world's EPT
  and normal world's EPT,before freeing trusty EPT,
  it will memset all PDPTEs except trusty memory,
  then call 'free_ept_mem', it can only free trusty EPT,
  and does't affect shared normal world EPT.

v2-->v3:
    -- Used new mmu api ept_mr_add when restore trusty memory
       to SOS and normal world
    -- Dropped this patch "Removed reverted page tables for trusty memory"
       because map_mem will be removed in future
       It will have a patch, need to update this api(ept_mr_add),
       it will not create inverted page tables for trusty memory.

v1-->v2:
   -- free trusty ept
       still use free_ept_mem, not add a new api,but need to
       memset pdptes except trusty memory
   -- Removed reverted page tables for trusty memory.

Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2018-08-10 10:17:09 +08:00
Shiqing Gao
40196d16af hv: treewide: fix 'inline function should be declared static'
MISRAC does not allow the use of an inline function with external
linkage.

What this patch does:
- Add the static keyword for the function that is only used in the
  definition file.
- Remove the inline keyword for the function that is used in multiple
  files.

v1 -> v2:
 * Move some functions to headers as static inline function if it is
    possible

Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
2018-08-10 10:16:04 +08:00
Shiqing Gao
cdd19dc51b hv: treewide: fix 'Variable should be declared static'
Declare a variable with the static qualifier if it is of file scope and
not used in another file.

v1 -> v2:
 * remove the unnecessary change to the following variables, which is
    due to the report issue

   struct multiboot_info *mbi = (struct multiboot_info *)
                        (HPA2HVA((uint64_t)boot_regs[1]));
   struct multiboot_mmap *mmap =
                                (struct multiboot_mmap *)
                                HPA2HVA((uint64_t)mbi->mi_mmap_addr);

Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
2018-08-10 10:15:36 +08:00
dongshen
183ca5d175 HV: Adding hostbridge vdev device support for partition hypervisor
V4:
 - Moved error checking to vdev_hostbridge_cfgwrite/vdev_hostbridge_cfgread

V3:
 - Unified ops calling and implemented deinit/cfgwrite/cfgread ops,
      previously only init op is implemented

Reviewed-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
2018-08-10 10:09:00 +08:00
dongshen
181de19cba HV: Adding passthru vdev device support for partition hypervisor
V4:
 - Renamed members for struct pcibar and changed code accordingly

V3:
 - Do not use ASSERT
 - Use EPT_XX defines when claling ept_mr_add
 - Report 64-bit MMIO physical bar to UOS as 32-bit virtual bar
   (assume bar size is always less than 4GB), which removed quite some of
   64-bit bar handling code

Reviewed-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
2018-08-10 10:09:00 +08:00
dongshen
5f3ea06feb HV: Implementing PCI CFG vm-exit handler for partition hypervisor
V4:
 - If pci device is not found in the PCI mapping table, just return without
   throwing any error message
 - Added NULL pointer checking when calling cfgread/cfgwrite ops
 - Moved error checking code to cfgread/cfgwrite ops

V3:
 - Do not use ASSERT
 - Call the cfg read/write ops defined in the vm description

V2:
 - Fixed MISRA violations

Reviewed-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
2018-08-10 10:09:00 +08:00
dongshen
86180bd4ce HV: Calling into VPCI init/unit functions for partition hypervisor
V4:
 - Clear address cache info after a full cf8/cfc access
 - Add NULL pointer checking when calling init/deinit ops

V3:
 - Do not use ASSERT
 - Loop through the vdev list defined in vm_desctiption table to call the vdev init/unit functions
 - Make the cached vbdf info struct per vm instead of per pcpu

V2:
 - Fixed MISRA violations

Reviewed-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
2018-08-10 10:09:00 +08:00
dongshen
65bd038650 HV: Compiling in VCPI code for partition hypervisor
V3:
- Compiling in VCPI code for partition hypervisor

Reviewed-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
2018-08-10 10:09:00 +08:00
dongshen
f60fcb6b16 HV: Defining the per-vm static vpci table for partition hypervisor
V4:
- Renamed members for struct pcibar
- License header fix
- Added vpci_vdev_array to struct vm_description

V3:
 - Defined the static centralized vpci table to reduce code size,
   previously many of the settings are obtained/generated dynamically

Reviewed-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: dongshen <dongsheng.x.zhang@intel.com>
2018-08-10 10:09:00 +08:00
Binbin Wu
2b22e88b51 hv: init: rm the code of creating guest init page table
If SOS start from 64bit mode, it will use the page table
created by bootloader or BIOS. HV doesn't need to create
page table for it.

Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-09 16:43:58 +08:00
Binbin Wu
33e1149b29 hv: init: unify init logic for vm0 bsp
In current code, VM0 BSP start mode is hardcoded, in this patch VM0 BSP
start mode is decided by the boot context prepared by bootloader/BIOS.

In current code, VM0 BSP VMCS is override only on UEFI platform.
In this patch, VM0 BSP VMCS is override on both SBL & UEFI platforms.

Also restructure the code of guest init code.
In this patch, a vcpu run_context is initilaized first according to vcpu mode.
Then write the value to vmcs according to run_context value.

Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-09 16:43:58 +08:00
Binbin Wu
4acce9338a hv: move save_segment/load_segment to a header file
save_segment/load_segment is common code and can be used outside of trusty,
move to a header file.

Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-09 16:43:58 +08:00
Binbin Wu
43db87cfed hv: rename acrn_efi.h to vm0_boot.h
The structures defined in acrn_efi.h is x86 related, move it
to acrh/x86/guest/.
Also, the headfile will be used on both SBL & UEFI platforms,
rename it to vm0_boot.h

Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-09 16:43:58 +08:00
Binbin Wu
adddf512a6 hv: move define of struct cpu_gp_regs to a separate headfile
EFI stub code need to reference to the struct cpu_gp_regs, which
is currently defined in vcpu.h, however include vcpu.h in EFI stub code
will include other header files not requried by EFI stub code.
After moving the define of struct cpu_gp_regs to a separate
headfile, the file can be included in EFI stub code without other header
files.

Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-09 16:43:58 +08:00
Binbin Wu
5a5b2a1ead hv: init: save boot context from bootloader/bios
Add code to save boot context, which is prepare by the bootloader or
BIOS, the context can be used to init sos vmcs, such as GDT, IDT,
segment selectors, control registers, ia32_efer. In this way, HV can
leverage the data structures built by bootloader or BIOS, without
creating them in HV.

Signed-off-by: Binbin Wu <binbin.wu@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
2018-08-09 16:43:58 +08:00
Qi Yadong
2fc3bdec40 HV: trusty: new hypercall to save/restore context of secure world
New field in VM's structure:
    sworld_snapshot: save cpu_context of secure world.

New hypercall: HC_SAVE_RESTORE_SWORLD_CTX
    In UOS S3 suspend path: trusty kernel driver will call this hypercall
    to require Hypervisor save context of secure world.
    In UOS S3 resume path: virtual firmware will call this hypercall to
    require Hypervisor restore context of secure world.

New bit in secure_world_control.flag:
    ctx_saved: indicate whether cpu_context of secure world is saved.

Signed-off-by: Qi Yadong <yadong.qi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-09 15:09:15 +08:00
Qi Yadong
3225b16e5f HV: trusty: log printing cleanup
Replace some pr_err() with dev_dbg().

Signed-off-by: Qi Yadong <yadong.qi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-09 15:09:15 +08:00
Qi Yadong
9ba14dac31 HV: trusty: remove unused HC ID
The security information will not pass to HV through Hypercall,
so remove the unused HC_GET_SEC_INFO.

Signed-off-by: Qi Yadong <yadong.qi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-09 15:09:15 +08:00
Qi Yadong
b5b769f45a HV: trusty: refine secure_world_control
Define Bitmap flag to indicate secure world's state:
    supported: 0(not supported), 1(supported)
    active:    0(inactive), 1(active)

Refine secure_world_memory:
    base_gpa_in_sos: base_gpa from SOS's view
    base_gpa_in_uos: base_gpa from UOS's view, this is the original base_gpa
                     allocated by bootloader.
    Recording above GPA is for usage of trusty EPT destroy and re-create.
    There is an assumption: the secure world's memory address is contiguous
    in both SOS and physical side.

Signed-off-by: Qi Yadong <yadong.qi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-09 15:09:15 +08:00
Sainath Grandhi
ff96453993 hv: Boot multiple OS for Partitioning mode ACRN
ACRN in partitioning mode boots multiple OS. Adding code to parse
VM description structure and a reference description structure for
booting 2 OSes.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-09 15:01:57 +08:00
Yin Fengwei
10f0bb012a hv: remove push/pop instruction emulation.
It's not reasonable to use push/pop against mmio. So we remove
the push/pop emulation.

Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2018-08-09 14:46:13 +08:00
Yin Fengwei
fa9fec50e9 hv: inject invalid opcode if decode instruction fails
We inject invalid opcode if instruction decode fails.

We don't support many instruction. If new type guest hit
the invalid opcode and it's necessary to emulate that
instruction, we could add new instruction then.

Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2018-08-09 14:46:13 +08:00
Yin Fengwei
1a00d6c943 hv: add more exception injection API
TO inject the
  - Invalid Opcode exception
  - Stack Fault exception
  - Alignment Check exception
to guest.

Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2018-08-09 14:46:13 +08:00
Yin Fengwei
96e99e3a72 hv: use more reliable method to get guest DPL.
The DPL from SS access right field is always correct according
to SDM. We use it instead of using CS selector.

Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
2018-08-09 14:46:13 +08:00
Yin Fengwei
63fe48c27f hv: get correct fault address for copy_to/from_gva
When doing copy_to/from_gva, it's possible the guest no page
happens on none-first page. In this case, we need get correct
fault address from gva2gpa.

Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Eddie Dong <Eddie.dong@intel.com>
2018-08-09 14:46:13 +08:00
Shiqing Gao
4106fadeb3 hv: treewide: fix 'Switch empty default has no comment'
This patch add some comments after the default and before the break
in the switch statement based on MISRA-C requirement.

Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
2018-08-08 16:01:57 +08:00
Sainath Grandhi
04b4c9110c hv: Adding a wrapper on top of prepare_vm0
Added prepare_vm function as a wrapper function on top of prepare_vm0.
This makes adding support for partition mode ACRN to boot multiple
VMs from HV cleaner.

Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
2018-08-08 15:53:46 +08:00
Shiqing Gao
c0544c9d36 hv: treewide: fix 'Potential side effect problem in expression'
MISRA-C requirement:
The value of an expression shall be the same under any order of
evaluation.
The order in which side effects take place is unspecified and may lead
to unexpected results.

This patch add a temporary variable for temporary storage to avoid the
side effects of evaluation order.

Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-08 10:50:06 +08:00
Jason Chen CJ
b1612e3072 add cpu_do_idle to handle idle
add wrap function cpu_do_idle in default_idle to handle arch cpu specific
idle operation.

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-08 10:00:51 +08:00
Kaige Fu
b78aa347e0 HV: instr_emul: Make vm_update_register/rflags as void
vm_update_register calls vm_get/set_register to update register and vm_update_rflags
calls vm_update_register to update RFLAGS.

We have make vm_get/set_register as non-failed function in previous patch.
So, this patch make the vm_update_register/rflags as void.

Signed-off-by: Kaige Fu <kaige.fu@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-08 09:59:04 +08:00
Kaige Fu
12726dbfc9 HV: instr_emul: Make vie_read/write_bytereg as non-failed function
vie_read/write_bytereg call vm_get/set_register to get/set byteregs.

We have make vm_get/set_register as non-failed function in previous patch.
So, this patch make the vie_read/write_bytereg as non-failed function too.

Signed-off-by: Kaige Fu <kaige.fu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-08-08 09:59:04 +08:00