[PATCH v2 13/13] KVM: x86: Allow userspace to disable the kernel's emulator

Sean Christopherson
2020-02-18T23:30:05Z

Expose the emulator control to userspace via a module param.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
---
arch/x86/kvm/x86.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index f9134e1104c2..ca3aa185f5ee 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -159,7 +159,8 @@ EXPORT_SYMBOL_GPL(enable_vmware_backdoor);
static bool __read_mostly force_emulation_prefix = false;
module_param(force_emulation_prefix, bool, S_IRUGO);

-static const bool enable_emulator = true;
+static bool __read_mostly enable_emulator = true;
+module_param_named(emulator, enable_emulator, bool, 0440);

int __read_mostly pi_inject_timer = -1;
module_param(pi_inject_timer, bint, S_IRUGO | S_IWUSR);
--
2.24.1