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HV: trusty: new hypercall to save/restore context of secure world

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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>
This commit is contained in:
Qi Yadong
2018-05-25 13:08:04 +08:00
committed by lijinxia
parent 3225b16e5f
commit 2fc3bdec40
7 changed files with 85 additions and 5 deletions
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7
hypervisor/include/arch/x86/guest/vm.h
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@@ -153,6 +153,13 @@ struct vm {
unsigned char GUID[16];
struct secure_world_control sworld_control;
/* Secure World's snapshot
* Currently, Secure World is only running on vcpu[0],
* so the snapshot only stores the vcpu0's run_context
* of secure world.
*/
struct cpu_context sworld_snapshot;
uint32_t vcpuid_entry_nr, vcpuid_level, vcpuid_xlevel;
struct vcpuid_entry vcpuid_entries[MAX_VM_VCPUID_ENTRIES];
#ifdef CONFIG_PARTITION_MODE