On Tue, Dec 13, 2016 at 08:16:19PM +0800, Haozhong Zhang wrote:
> According to Intel SDM, section "VMXON - Enter VMX Operation", a
> VMfail should be returned to L1 hypervisor if L1 vmxon is executed in
> VMX operation, rather than just print a warning message.
The spec also says to return value 15? But I suppose that means
the TOOD in vmreturn should be implemented?
>
> Signed-off-by: Haozhong Zhang <haozhong.zh...@intel.com>
> ---
> xen/arch/x86/hvm/vmx/vvmx.c | 9 ++++++---
> 1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/xen/arch/x86/hvm/vmx/vvmx.c b/xen/arch/x86/hvm/vmx/vvmx.c
> index f5637eb..b60d7f0 100644
> --- a/xen/arch/x86/hvm/vmx/vvmx.c
> +++ b/xen/arch/x86/hvm/vmx/vvmx.c
> @@ -1397,9 +1397,12 @@ int nvmx_handle_vmxon(struct cpu_user_regs *regs)
> return rc;
>
> if ( nvmx_vcpu_in_vmx(v) )
> - gdprintk(XENLOG_WARNING,
> - "vmxon again: orig %"PRIpaddr" new %lx\n",
> - nvmx->vmxon_region_pa, gpa);
> + {
> + vmreturn(regs,
> + nvcpu->nv_vvmcxaddr != VMCX_EADDR ?
> + VMFAIL_VALID : VMFAIL_INVALID);
> + return X86EMUL_OKAY;
> + }
>
> nvmx->vmxon_region_pa = gpa;
>
> --
> 2.10.1
>
>
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