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    SubjectRe: [linux-kernel] Re: [PATCH] x86: provide a DMI based port 0x80 I/O delay override.
    David P. Reed wrote:
    > Alan Cox wrote:
    >>> bus abort on the LPC bus". More problematic is that I would think
    >>> some people might want to turn on the AMD feature that generates
    >>> machine checks if a bus timeout happens. The whole point of machine
    >>> checks is
    >>
    >> An ISA/LPC bus timeout is fulfilled by the bridge so doesn't cause an
    >> MCE.

    > Good possibility, but the documentation on HyperTransport suggests
    > otherwise, even for LPC bridges in this particular modern world of
    > AMD64. I might do the experiment someday to see if my LPC bridge is
    > implemented in a way that does or doesn't support enabling MCE's. Could
    > be different between Intel and AMD - I haven't had reason to pore over
    > the Intel chipset specs, since my poking into all this stuff has been
    > driven by my personal machine's issues, and it's not got any Intel
    > compatible parts.

    If you have a subtractive decoding bridge you will have completion on HT.

    -hpa


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