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SubjectRe: [PATCH -v4] KVM: Add VT-x machine check support
Huang Ying wrote:
> From: Andi Kleen <ak@linux.intel.com>
>
> VT-x needs an explicit MC vector intercept to handle machine checks in the
> hyper visor.
>
> It also has a special option to catch machine checks that happen
> during VT entry.
>
> Do these interceptions and forward them to the Linux machine check
> handler. Make it always look like user space is interrupted because
> the machine check handler treats kernel/user space differently.
>
> Thanks to Jiang Yunhong for help and testing.
>
> v4: move exit_reason to struct vcpu_vmx, add is_machine_check()
>
> v3: Rebased on kvm.git
>
> v2: Handle machine checks still in interrupt off context
> to avoid problems on preemptible kernels.
>
>

Applied, thanks.

>
> + vmx->exit_reason = vmcs_read32(VM_EXIT_REASON);
> +
> + /* Handle machine checks before interrupts are enabled */
> + if ((vmx->exit_reason == EXIT_REASON_MCE_DURING_VMENTRY) ||
> + is_machine_check(exit_intr_info))
> + kvm_machine_check();
> +
>

I added a check here for exit_reason == EXCEPTION_NMI. I don't think
exit_intr_info can be trusted otherwise.

--
error compiling committee.c: too many arguments to function



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