rebase patches on top of Ubuntu-5.4.0-30.34

[pve-kernel.git] / patches / kernel / 0006-Revert-KVM-VMX-enable-nested-virtualization-by-defau.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Thomas Lamprecht <t.lamprecht@proxmox.com>
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 <t.lamprecht@proxmox.com>
---
 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 39a116d43993..25ecb53517eb 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;