there are data transfer between guest(GPA) & hv(HPA), especially for
hypercall from guest.
guest should make sure these GPAs are address continous, but hv cannot
assure HPAs which mapped to these GPAs are address continous, for example,
after enable hugetlb, a contious GPA range could come from two different
2M pages.
this patch is handling such case by doing gpa page walking during
copy_from_vm & copy_to_vm.
Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Changes:
1. Move io request related functions from hypercall.c to io_request.c
since they are not hypercalls;
2. Remove acrn_insert_request_nowait() as it is never used;
Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
Add set_memmaps hypercall to support multi regions memmap.
Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
If the target is an array, then only the first element
will be copied.
So replace structure assignment with memcpy_s().
Signed-off-by: Qi Yadong <yadong.qi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
V3->V4: Updated function/variable names for accurancy
V2->V3: Changed a few function/variable names to make it less confusing
V1->V2: removed the unneccesary cache flushing
- For UEFI boot, allocate memory for trampoline code in ACRN EFI,
and pass the pointer to HV through efi_ctx
- For other boot, scan E820 to allocate memory in HV run time
- update_trampoline_code_refs() updates all the references that need the
absolute PA with the actual load address
Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong>
Acked-by: Xu, Anthony <anthony.xu@intel.com>
Before copy data between guest and host, should convert the GPA
to HVA and do the copy.
Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
Reviewed-by: Chen, Jason Cl <jason.cj.chen@intel.com>
Reviewed-by: Yakui, Zhao <yakui.zhao@intel.com>
We can use this interface for VHM to pass per-cpu power state data
to guest per its request.
For now the vcpu power state is per-vm, this could be changed if
per-cpu power state support is required in the future.
Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Kevin Tian <kevin.tian@intel.com>
Documentation for parameters must match exactly in spelling and case.
Parameter named "vcpu" was incorrectly documented as "VCPU", and
parameter named "param" was documented as "param's".
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
With current code, the acrn.efi is inserted between
cl bootloader.efi and bzImage.efi that destroyed the chain
relationship of cl bootloader and cl bzImage.efi.
And the following is current boot flow:
UEFI -> cl bootloader.efi -> acrn.efi -> bzImage.efi
The purpose of this patch is resume above chain relationship,
and make uefi vm return to efi stub context once launched,
then continue to call the UEFI API(LoadImage/StartImage) to launch
cl bootloader or other bootloaders. So the boot flow will
change to be as below:
UEFI -> acrn.efi -> cl bootloader.efi -> bzImage.efi
After applying this patch, the code related to loading
bzImage.efi and getting pe_entry is unnecessary due to
the bzImage.efi will not be launched by acrn.efi directly,
so it is removed.
Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
With current code, memcpy rsdp to 0x500 maybe overwrite uefi
code/data region.
So remove the legacy BIOS deliver method of RSDP, which need copy
the RSDP to EBDA space which is addressed by the 16bit pointer
at 0x40E or upper memory BIOS space 0xe0000-0xfffff. And just
deliver the pointer of RSDP, which is already saved in UEFI system
table, to hypervisor.
Create a function named efi_init() to separate efi initialize code.
Signed-off-by: Zheng, Gen <gen.zheng@intel.com>
UOS_Loader will trigger boot of Trusty-OS by HC_INITIALIZE_TRUSTY.
UOS_Loader will load trusty image and alloc runtime memory for
trusty. UOS_Loader will transfer these information include
trusty runtime memory base address, entry address and memory
size to hypervisor by trusty_boot_param structure.
In hypervisor, once HC_INITIALIZE_TRUSTY received, it will create
EPT for Secure World, save Normal World vCPU context, init
Secure World vCPU context and switch World state to Secure World.
Signed-off-by: Qi Yadong <yadong.qi@intel.com>
For ARM, The SMC instruction is used to generate a synchronous
exception that is handled by Secure Monitor code running in EL3.
In the ARM architecture, synchronous control is transferred between
the normal Non-secure state and the Secure state through Secure
Monitor Call exceptions. SMC exceptions are generated by the SMC
instruction, and handled by the Secure Monitor.The operation of
the Secure Monitor is determined by the parameters that are passed
in through registers.
For ACRN, Hypervisor will simulate SMC by hypercall to switch vCPU
State between Normal World and Secure World.
There are 4 registers(RDI, RSI, RDX, RBX) reserved for paramters
passing between Normal World and Secure World.
Signed-off-by: Qi Yadong <yadong.qi@intel.com>
Jason Chen CJ