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trusty: do not destroy secure world if it's not created

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check sworld_eptp before real destroy_secure_world

Tracked-On: #1200
Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
This commit is contained in:
Jason Chen CJ 2018-09-08 15:29:32 +08:00 committed by lijinxia
parent 8773dfb1f6
commit d72e65c91a
1 changed files with 12 additions and 10 deletions
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22
hypervisor/arch/x86/trusty.c
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@ -158,6 +158,12 @@ void destroy_secure_world(struct vm *vm, bool need_clr_mem)
pr_err("Parse vm0 context failed.");
return;
}
if (vm->arch_vm.sworld_eptp == NULL) {
pr_err("sworld eptp is NULL, it's not created");
return;
}
if (need_clr_mem) {
/* clear trusty memory space */
(void)memset(hpa2hva(hpa), 0U, size);
@ -176,17 +182,13 @@ void destroy_secure_world(struct vm *vm, bool need_clr_mem)
}
/* Free trusty ept page-structures */
if (vm->arch_vm.sworld_eptp != NULL) {
pdpt_addr =
pdpt_addr =
(void *)pml4e_page_vaddr(*(uint64_t *)vm->arch_vm.sworld_eptp);
/* memset PDPTEs except trusty memory */
(void)memset(pdpt_addr, 0UL,
NON_TRUSTY_PDPT_ENTRIES * sizeof(uint64_t));
free_ept_mem((uint64_t *)vm->arch_vm.sworld_eptp);
vm->arch_vm.sworld_eptp = NULL;
} else {
pr_err("sworld eptp is NULL");
}
/* memset PDPTEs except trusty memory */
(void)memset(pdpt_addr, 0UL,
NON_TRUSTY_PDPT_ENTRIES * sizeof(uint64_t));
free_ept_mem((uint64_t *)vm->arch_vm.sworld_eptp);
vm->arch_vm.sworld_eptp = NULL;
}
static void save_world_ctx(struct vcpu *vcpu, struct ext_context *ext_ctx)