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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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9
hypervisor/include/common/hypercall.h
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@@ -397,6 +397,15 @@ int32_t hcall_world_switch(struct vcpu *vcpu);
*/
int32_t hcall_initialize_trusty(struct vcpu *vcpu, uint64_t param);
/**
* @brief Save/Restore Context of Secure World.
*
* @param vcpu Pointer to VCPU data structure
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_save_restore_sworld_ctx(struct vcpu *vcpu);
/**
* @}
*/ // End of trusty_hypercall