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hypercall: do not allow hypercall from UOS except trusty

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only trusty related hypercall will come from UOS, others should come from VM0

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Jason Chen CJ 2018-05-21 20:17:40 +08:00 committed by lijinxia
parent f505f338bd
commit 05f8fd701a
1 changed files with 6 additions and 0 deletions
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6
hypervisor/arch/x86/guest/vmcall.c
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@ -57,6 +57,12 @@ int vmcall_vmexit_handler(struct vcpu *vcpu)
return -1;
}
if (!is_vm0(vm) && hypcall_id != HC_WORLD_SWITCH &&
hypcall_id != HC_INITIALIZE_TRUSTY) {
pr_err("hypercall %d is only allowed from VM0!\n", hypcall_id);
return -1;
}
/* Dispatch the hypercall handler */
switch (hypcall_id) {
case HC_GET_API_VERSION: