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hv: trap RDPMC instruction execution from any guest

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PMU is hidden from any guest, UD is expected when guest
try to execute 'rdpmc' instruction.

this patch sets 'RDPMC exiting' in Processorbased
VM-execution control.

Tracked-On: #3453
Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yonghua Huang
2019-12-02 19:59:46 +08:00
committed by wenlingz
parent 3d412266bc
commit 450d2cf2e9
1 changed files with 5 additions and 0 deletions
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5
hypervisor/arch/x86/guest/vmcs.c
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@@ -283,6 +283,11 @@ static void init_exec_ctrl(struct acrn_vcpu *vcpu)
*/
value32 &= ~VMX_PROCBASED_CTLS_INVLPG;
/*
* Enable VM_EXIT for rdpmc execution.
*/
value32 |= VMX_PROCBASED_CTLS_RDPMC;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, value32);
pr_dbg("VMX_PROC_VM_EXEC_CONTROLS: 0x%x ", value32);