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stop reverting turning on nested virtualization by default

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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2021-03-02 13:34:34 +01:00
parent 0e1345d112
commit 1deaf0f816
1 changed files with 0 additions and 32 deletions
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patches/kernel/0005-Revert-KVM-VMX-enable-nested-virtualization-by-defau.patch
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@ -1,32 +0,0 @@
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 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;