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SubjectRe: [PATCH 2/5] Paravirt cpu batching.patch
Chuck Ebbert wrote:
> In-Reply-To: <20061212225430.GC10475@sequoia.sous-sol.org>
>
> On Tue, 12 Dec 2006 14:54:30 -0800, Chros Wright wrote:
>
>
>>> --- a/arch/i386/kernel/process.c Tue Dec 12 13:50:50 2006 -0800
>>> +++ b/arch/i386/kernel/process.c Tue Dec 12 13:50:53 2006 -0800
>>> @@ -665,6 +665,37 @@ struct task_struct fastcall * __switch_t
>>> load_TLS(next, cpu);
>>>
>>> /*
>>> + * Restore IOPL if needed.
>>> + */
>>> + if (unlikely(prev->iopl != next->iopl))
>>> + set_iopl_mask(next->iopl);
>>>
>> Small sidenote that this bit undoes a recent change from Chuck Ebbert, which
>> killed iopl_mask update via hypervisor.
>>
>
> This whole thing needs a proper fix IMO. I posted something a while back
> but Andi didn't like it, I guess.
>

We can handle this one with an #ifdef CONFIG_PARAVIRT, though.

Zach
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