From: Joerg Roedel <[EMAIL PROTECTED]> To disable the use of the Nested Paging feature even if it is available in hardware this patch adds a module parameter. Nested Paging can be disabled by passing npt=0 to the kvm_amd module.
Signed-off-by: Joerg Roedel <[EMAIL PROTECTED]> Signed-off-by: Avi Kivity <[EMAIL PROTECTED]> --- arch/x86/kvm/svm.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index c12a759..fb5d6c2 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -48,6 +48,9 @@ MODULE_LICENSE("GPL"); #define SVM_DEATURE_SVML (1 << 2) static bool npt_enabled = false; +static int npt = 1; + +module_param(npt, int, S_IRUGO); static void kvm_reput_irq(struct vcpu_svm *svm); @@ -418,6 +421,11 @@ static __init int svm_hardware_setup(void) if (!svm_has(SVM_FEATURE_NPT)) npt_enabled = false; + if (npt_enabled && !npt) { + printk(KERN_INFO "kvm: Nested Paging disabled\n"); + npt_enabled = false; + } + if (npt_enabled) printk(KERN_INFO "kvm: Nested Paging enabled\n"); -- 1.5.4.5 ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel