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SubjectRe: [PATCH] i386: improve double fault handling

* H. Peter Anvin <hpa@zytor.com> wrote:

> Jan Beulich wrote:
>>
>>> Firstly, 64-bit does not use a task gate for double faults anymore.
>>> (but uses a separate IST stack for double faults)
>>
>> Sure - because there are no task gates on 64-bit.
>>
>
> What we're doing here is really using task gates to emulate IST
> anyway.

yes, because we dont use the main feature that differentiates task gates
from ISTs: a different cr3 entry. (the rest of the differences is really
just fluff)

Ingo


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