On 03/12/18 21:13, Wei Huang wrote:
> This patch adds Intel "Xeon CPU E3-1220 V2", with CPUID.01H.EAX=0x000306A8,
> into the list of known broken CPUs which fail to support VMX preemption
> timer. This bug was found while running the APIC timer test of
> kvm-unit-test on this specific CPU, even though the errata info can't be
> located in the public domain for this CPU.
>
> Signed-off-by: Wei Huang <wei@xxxxxxxxxx>
> ---
> arch/x86/kvm/vmx.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 02edd9960e9d..2b90be38c02e 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -1764,6 +1764,8 @@ static u32 vmx_preemption_cpu_tfms[] = {
> /* 321324.pdf - AAK139 - D0 - Xeon 5500 */
> /* 320836.pdf - AAJ124 - D0 - i7-900 Extreme and i7-900 Desktop */
> 0x000106A5,
> + /* Xeon E3-1220 V2 */
> +0x000306A8,
> };
>
> static inline bool cpu_has_broken_vmx_preemption_timer(void)
>
Queued, thanks.
Paolo
