Messages in this thread Patch in this message | | | From | Gleb Natapov <> | Subject | [PATCH 9/9] KVM, VMX: Check for automatic switch msr table overflow. | Date | Mon, 3 Oct 2011 15:49:55 +0200 |
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Signed-off-by: Gleb Natapov <gleb@redhat.com> --- arch/x86/kvm/vmx.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index fef7bd9..afa9aa3 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1281,7 +1281,11 @@ static void add_atomic_switch_msr(struct vcpu_vmx *vmx, unsigned msr, if (m->guest[i].index == msr) break; - if (i == m->nr) { + if (i == NR_AUTOLOAD_MSRS) { + printk_once(KERN_WARNING"Not enough mst switch entries. " + "Can't add msr %x\n", msr); + return; + } else if (i == m->nr) { ++m->nr; vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, m->nr); vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, m->nr); -- 1.7.5.3
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