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trusty: init & switch world fix

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- when init, cr0 & cr4 should read from VMCS
- when world switch, cr0/cr4 read shadow should also be save/restore

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
This commit is contained in:
Jason Chen CJ 2018-06-16 14:46:51 +08:00 committed by Jack Ren
parent eb14ecf14b
commit 40b074f03a
2 changed files with 17 additions and 2 deletions
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16
hypervisor/arch/x86/trusty.c
View File

@ -220,6 +220,8 @@ static void save_world_ctx(struct run_context *context)
/* TSC_OFFSET, CR3, RIP, RSP, RFLAGS already saved on VMEXIT */
context->cr0 = exec_vmread(VMX_GUEST_CR0);
context->cr4 = exec_vmread(VMX_GUEST_CR4);
context->cr0_shadow = exec_vmread(VMX_CR0_READ_SHADOW);
context->cr4_shadow = exec_vmread(VMX_CR4_READ_SHADOW);
context->dr7 = exec_vmread(VMX_GUEST_DR7);
context->ia32_debugctl = exec_vmread64(VMX_GUEST_IA32_DEBUGCTL_FULL);
context->ia32_pat = exec_vmread64(VMX_GUEST_IA32_PAT_FULL);
@ -261,6 +263,8 @@ static void load_world_ctx(struct run_context *context)
exec_vmwrite(VMX_GUEST_CR0, context->cr0);
exec_vmwrite(VMX_GUEST_CR3, context->cr3);
exec_vmwrite(VMX_GUEST_CR4, context->cr4);
exec_vmwrite(VMX_CR0_READ_SHADOW, context->cr0_shadow);
exec_vmwrite(VMX_CR4_READ_SHADOW, context->cr4_shadow);
exec_vmwrite(VMX_GUEST_RIP, context->rip);
exec_vmwrite(VMX_GUEST_RSP, context->rsp);
exec_vmwrite(VMX_GUEST_RFLAGS, context->rflags);
@ -399,9 +403,17 @@ static bool init_secure_world_env(struct vcpu *vcpu,
vcpu->arch_vcpu.contexts[SECURE_WORLD].tsc_offset = 0;
vcpu->arch_vcpu.contexts[SECURE_WORLD].cr0 =
vcpu->arch_vcpu.contexts[NORMAL_WORLD].cr0;
vcpu->arch_vcpu.contexts[NORMAL_WORLD].cr0 =
exec_vmread(VMX_GUEST_CR0);
vcpu->arch_vcpu.contexts[SECURE_WORLD].cr4 =
vcpu->arch_vcpu.contexts[NORMAL_WORLD].cr4;
vcpu->arch_vcpu.contexts[NORMAL_WORLD].cr4 =
exec_vmread(VMX_GUEST_CR4);
vcpu->arch_vcpu.contexts[SECURE_WORLD].cr0_shadow =
vcpu->arch_vcpu.contexts[NORMAL_WORLD].cr0_shadow =
exec_vmread(VMX_CR0_READ_SHADOW);
vcpu->arch_vcpu.contexts[SECURE_WORLD].cr4_shadow =
vcpu->arch_vcpu.contexts[NORMAL_WORLD].cr4_shadow =
exec_vmread(VMX_CR4_READ_SHADOW);
exec_vmwrite(VMX_GUEST_RSP,
TRUSTY_EPT_REBASE_GPA + size);

3
hypervisor/include/arch/x86/guest/vcpu.h
View File

@ -138,6 +138,9 @@ struct run_context {
uint64_t ia32_sysenter_eip;
uint64_t ia32_debugctl;
uint64_t cr0_shadow;
uint64_t cr4_shadow;
/* segment registers */
struct segment cs;
struct segment ss;