From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Thomas Lamprecht Date: Fri, 7 Jun 2019 21:16:42 +0200 Subject: [PATCH] Revert "KVM: VMX: enable nested virtualization by default" This reverts commit 1e58e5e59148916fa43444a406335a990783fb78 As we're not yet there, and this effectively breaks live migration for all VMs using host or +vmx which did not manually enabled nesting Those which already enabled nesting manually have already breakage, but that was something to expect. The situation will get better in the future (probably post qemu 4.1). Signed-off-by: Thomas Lamprecht --- arch/x86/kvm/vmx/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 2a1ed3aae100..c5dd076e8e61 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -103,7 +103,7 @@ module_param(enable_apicv, bool, S_IRUGO); * VMX and be a hypervisor for its own guests. If nested=0, guests may not * use VMX instructions. */ -static bool __read_mostly nested = 1; +static bool __read_mostly nested = 0; module_param(nested, bool, S_IRUGO); static u64 __read_mostly host_xss;