[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 2/4] vvmx: return VMfail to L1 if L1 vmxon is executed in VMX operation
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. Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx> Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx> Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx> --- 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 eae8150..e765b60 100644 --- a/xen/arch/x86/hvm/vmx/vvmx.c +++ b/xen/arch/x86/hvm/vmx/vvmx.c @@ -1390,9 +1390,12 @@ 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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