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List: kvm
Subject: EPT support breakage on: KVM: VMX: Zero ept module parameter if
From: Andrew Theurer <habanero () linux ! vnet ! ibm ! com>
Date: 2009-03-31 15:00:32
Message-ID: 49D23010.9010408 () linux ! vnet ! ibm ! com
[Download RAW message or body]
I cannot get EPT support to work on commit:
21f65ab2c582594a69dcb1484afa9f88b3414b4f
KVM: VMX: Zero ept module parameter if ept is not present
I see tons of pf_guest from kvm_stat, where as the previous commit has none.
I am using "ept=1" module option for kvm-intel.
This is on Nehalem processors.
-Andrew
commit diff:
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 8b1b9b8..96a19f8 100644 (file)
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -265,7 +265,7 @@ static inline int cpu_has_vmx_ept(void)
static inline int vm_need_ept(void)
{
- return (cpu_has_vmx_ept() && enable_ept);
+ return enable_ept;
}
static inline int vm_need_virtualize_apic_accesses(struct kvm *kvm)
@@ -1205,6 +1205,9 @@ static __init int setup_vmcs_config(struct
vmcs_config *vmcs_conf)
if (!cpu_has_vmx_vpid())
enable_vpid = 0;
+ if (!cpu_has_vmx_ept())
+ enable_ept = 0;
+
min = 0;
#ifdef CONFIG_X86_64
min |= VM_EXIT_HOST_ADDR_SPACE_SIZE;
--
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