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hv: trusty: refine control registers switching method

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Remove vmx_cr0/vmx_cr4 from ext_context structure, they are duplicated
with cr0/cr4 fields in run_context.
Switch cr0/cr4 of run_context structure on demand when do world switch.

Remove vmx_cr0_read_shadow/vmx_cr4_read_shadow from ext_context structure.
These fields should be same for both normal world and secure world.

Tracked-On: #2773
Signed-off-by: Qi Yadong <yadong.qi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Qi Yadong
2019-03-14 15:51:37 +08:00
committed by Eddie Dong
parent 4157b843e5
commit ff41c008ce
2 changed files with 7 additions and 16 deletions
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7
hypervisor/include/arch/x86/guest/vcpu.h
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@@ -171,7 +171,7 @@ struct run_context {
};
/*
* extended context does not save/restore during vm exity/entry, it's mainly
* extended context does not save/restore during vm exit/entry, it's mainly
* used in trusty world switch
*/
struct ext_context {
@@ -203,11 +203,6 @@ struct ext_context {
uint64_t dr7;
uint64_t tsc_offset;
uint64_t vmx_cr0;
uint64_t vmx_cr4;
uint64_t vmx_cr0_read_shadow;
uint64_t vmx_cr4_read_shadow;
/* The 512 bytes area to save the FPU/MMX/SSE states for the guest */
uint64_t
fxstore_guest_area[VMX_CPU_S_FXSAVE_GUEST_AREA_SIZE / sizeof(uint64_t)]