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authorAvi Kivity <avi@qumranet.com>2008-03-24 18:15:14 +0200
committerAvi Kivity <avi@qumranet.com>2008-04-27 12:00:37 +0300
commit4c9fc8ef501790732ed035585b491756b75ea4c6 (patch)
tree5d5fd13456178c756170a6dabbec99c52eeeb6be /arch/x86/kvm/vmx.c
parent268fe02ae058c0c5e84ad678d67e5d7b013e664f (diff)
downloadlwn-4c9fc8ef501790732ed035585b491756b75ea4c6.tar.gz
lwn-4c9fc8ef501790732ed035585b491756b75ea4c6.zip
KVM: VMX: Add module option to disable flexpriority
Useful for debugging. Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
-rw-r--r--arch/x86/kvm/vmx.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index fb0389d3a8d1..01559311df8c 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -39,6 +39,9 @@ module_param(bypass_guest_pf, bool, 0);
static int enable_vpid = 1;
module_param(enable_vpid, bool, 0);
+static int flexpriority_enabled = 1;
+module_param(flexpriority_enabled, bool, 0);
+
struct vmcs {
u32 revision_id;
u32 abort;
@@ -200,8 +203,9 @@ static inline int cpu_has_secondary_exec_ctrls(void)
static inline bool cpu_has_vmx_virtualize_apic_accesses(void)
{
- return (vmcs_config.cpu_based_2nd_exec_ctrl &
- SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES);
+ return flexpriority_enabled
+ && (vmcs_config.cpu_based_2nd_exec_ctrl &
+ SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES);
}
static inline int vm_need_virtualize_apic_accesses(struct kvm *kvm)