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acrn-hypervisor
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hv: add GUEST_FLAG_STATELESS flag 

GUEST_FLAG_STATELESS indicates guest is running a stateless operating
system and need to be shutdown forcefully without data loss. This flag
is only appalicable to pre-launched VM. For TEE_VM, this flag will be
set implicitly.

Tracked-On: #8671
Signed-off-by: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
This commit is contained in:
Jiaqing Zhao 2024-07-11 07:31:43 +00:00 committed by acrnsi-robot
parent c4ea248bc9
commit 2dc56a8f23
4 changed files with 9 additions and 4 deletions
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6
hypervisor/arch/x86/guest/vm.c
View File

@ -177,10 +177,8 @@ bool is_stateful_vm(const struct acrn_vm *vm)
{
struct acrn_vm_config *vm_config = get_vm_config(vm->vm_id);
/* TEE VM doesn't has its own state. The TAs will do the content
* flush by themselves, HV and OS doesn't need to care about the state.
*/
return ((vm_config->guest_flags & GUEST_FLAG_TEE) == 0U);
/* TEE VM has GUEST_FLAG_STATELESS set implicitly */
return ((vm_config->guest_flags & GUEST_FLAG_STATELESS) == 0U);
}
/**

1
hypervisor/include/public/acrn_common.h
View File

@ -65,6 +65,7 @@
#define GUEST_FLAG_PMU_PASSTHROUGH (1UL << 11U) /* Whether PMU is passed through */
#define GUEST_FLAG_VHWP (1UL << 12U) /* Whether the VM supports vHWP */
#define GUEST_FLAG_VTM (1UL << 13U) /* Whether the VM supports virtual thermal monitor */
#define GUEST_FLAG_STATELESS (1UL << 14U) /* Whether the VM is stateless (can be forcefully shutdown with no data loss) */
/* TODO: We may need to get this addr from guest ACPI instead of hardcode here */
#define VIRTUAL_SLEEP_CTL_ADDR 0x400U /* Pre-launched VM uses ACPI reduced HW mode and sleep control register */

5
misc/config_tools/schema/config.xsd
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@ -487,6 +487,11 @@ These settings can only be changed at build time.</xs:documentation>
<xs:documentation>Specify TPM2 FIXUP for VM.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="stateless" type="Boolean" default="n" minOccurs="0">
<xs:annotation acrn:title="Stateless VM" acrn:applicable-vms="pre-launched" acrn:views="advanced">
<xs:documentation>Indicate the VM is running a stateless operating system and it can be shutdown forcefully with no data loss.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="epc_section" type="EPCSection" minOccurs="0">
<xs:annotation acrn:title="SGX Enclave Page Cache" acrn:views="advanced" acrn:applicable-vms="pre-launched">
<xs:documentation>Specify the Intel Software Guard Extensions (SGX) enclave page cache (EPC) section settings.</xs:documentation>

1
misc/config_tools/static_allocators/guest_flags.py
View File

@ -27,6 +27,7 @@ policies = [
GuestFlagPolicy(".//vm_type = 'RTVM' and .//load_order = 'PRE_LAUNCHED_VM' and //hv/BUILD_TYPE= 'debug'", "GUEST_FLAG_PMU_PASSTHROUGH"),
GuestFlagPolicy(".//vm_type = 'TEE_VM'", "GUEST_FLAG_TEE"),
GuestFlagPolicy(".//vm_type = 'REE_VM'", "GUEST_FLAG_REE"),
GuestFlagPolicy("(.//load_order = 'PRE_LAUNCHED_VM' and .//stateless = 'y') or (.//vm_type = 'TEE_VM')", "GUEST_FLAG_STATELESS"),
]
def fn(board_etree, scenario_etree, allocation_etree):