Messages in this thread Patch in this message | | | From | Tim Gardner <> | Subject | [PATCH 3.12-rc7] KVM: Fix modprobe failure for kvm_intel/kvm_amd | Date | Tue, 29 Oct 2013 09:13:54 -0600 |
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The x86 specific kvm init creates a new conflicting debugfs directory which causes modprobe issues with kvm_intel and kvm_amd. For example,
sudo modprobe kvm_amd modprobe: ERROR: could not insert 'kvm_amd': Bad address
The simplest fix is to just rename the directory. The following KVM config options are set:
CONFIG_KVM_GUEST=y CONFIG_KVM_DEBUG_FS=y CONFIG_HAVE_KVM=y CONFIG_HAVE_KVM_IRQCHIP=y CONFIG_HAVE_KVM_IRQ_ROUTING=y CONFIG_HAVE_KVM_EVENTFD=y CONFIG_KVM_APIC_ARCHITECTURE=y CONFIG_KVM_MMIO=y CONFIG_KVM_ASYNC_PF=y CONFIG_HAVE_KVM_MSI=y CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=y CONFIG_KVM=m CONFIG_KVM_INTEL=m CONFIG_KVM_AMD=m # CONFIG_KVM_MMU_AUDIT is not set CONFIG_KVM_DEVICE_ASSIGNMENT=y
Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Gleb Natapov <gleb@redhat.com> Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Tim Gardner <tim.gardner@canonical.com> ---
There is likely a more elegant and complicated way to solve this problem, but a simple rename for a debug feature seems best, especially for an -rc7.
arch/x86/kernel/kvm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index a0e2a8a..d17895a 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -609,7 +609,7 @@ static struct dentry *d_kvm_debug; struct dentry *kvm_init_debugfs(void) { - d_kvm_debug = debugfs_create_dir("kvm", NULL); + d_kvm_debug = debugfs_create_dir("kvm-x86", NULL); if (!d_kvm_debug) printk(KERN_WARNING "Could not create 'kvm' debugfs directory\n"); -- 1.7.9.5
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