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hv: initial host reset implementation

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- add the GUEST_FLAG_HIGHEST_SEVERITY flag to indicate that the guest has
  privilege to reboot the host system.

- this flag is statically assigned to guest(s) in vm_configurations.c in
  different scenarios.

- implement reset_host() function to reset the host. First try the ACPI
  reset register if available, then try the 0xcf9 PIO.

Tracked-On: #3145
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Zide Chen
2019-05-07 10:56:00 -07:00
committed by ACRN System Integration
parent 321e4f1300
commit 5a23f7b664
6 changed files with 67 additions and 3 deletions
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4
hypervisor/scenarios/sdc/vm_configurations.c
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@@ -14,7 +14,9 @@ struct acrn_vm_config vm_configs[CONFIG_MAX_VM_NUM] = {
.uuid = {0xdbU, 0xbbU, 0xd4U, 0x34U, 0x7aU, 0x57U, 0x42U, 0x16U, \
0xa1U, 0x2cU, 0x22U, 0x01U, 0xf1U, 0xabU, 0x02U, 0x40U},
/* dbbbd434-7a57-4216-a12c-2201f1ab0240 */
.guest_flags = 0UL,
/* Allow SOS to reboot the host since there is supposed to be the highest severity guest */
.guest_flags = GUEST_FLAG_HIGHEST_SEVERITY,
.clos = 0U,
.memory = {
.start_hpa = 0UL,