github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2026-01-13 11:33:58 +00:00
Code Issues Projects Releases Wiki Activity

hv: add default handlers for PIO/MMIO access

Browse Source 
Add the default handlers for PIO and MMIO access which returns all
FFs on read and discards write. These default handlers are registered
when SOS VM or pre-launched VM is created.

v3 -> v4:
- use single layer if in hv_emulate_pio
- change the implementation of pio_default_read

v2 -> v3:
- use runtime vm type instead of CONFIG_PARTITION_MODE
- revise the pio/mmio emulation functions
- revise the pio/mmio default read functions according to MISRA C
- revise the commit message

v1 -> v2:
- add default handlers members in struct acrn_vm and add interfaces
  to register default handlers for PIO and MMIO.

Tracked-On: #2860
Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Jian Jun Chen
2019-03-26 11:23:16 +08:00
committed by wenlingz
parent 01b28c8e03
commit cee45a80d9
4 changed files with 137 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
hypervisor/arch/x86/guest/vm.c
View File

@@ -339,6 +339,12 @@ int32_t create_vm(uint16_t vm_id, struct acrn_vm_config *vm_config, struct acrn_
vm->arch_vm.nworld_eptp = vm->arch_vm.ept_mem_ops.get_pml4_page(vm->arch_vm.ept_mem_ops.info);
sanitize_pte((uint64_t *)vm->arch_vm.nworld_eptp);
/* Register default handlers for PIO & MMIO if it is SOS VM or Pre-launched VM */
if ((vm_config->type == SOS_VM) || (vm_config->type == PRE_LAUNCHED_VM)) {
register_pio_default_emulation_handler(vm);
register_mmio_default_emulation_handler(vm);
}
if (is_sos_vm(vm)) {
/* Only for SOS_VM */
create_sos_vm_e820(vm);