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    SubjectRe: [PATCH v2.6.38-rc7] Revert "libata: ahci_start_engine compliant to AHCI spec"
    On Sun, 15 May 2011 11:25:19 +0200
    "Rafael J. Wysocki" <> wrote:

    > On Sunday, May 15, 2011, Jian Peng wrote:
    > > Hi, Michael/Rafael/Gu,
    > >
    > > Could you help me understand the testing environme? I like to
    > > reproduce it if it is possible and debug it. The host controller
    > > this patch dealing with is not used on PC so my testing environment
    > > is quite different.

    We have seen it on at least 3 different controllers from at least 2
    different vendors (I do not know, what hardware Gu has).

    So, for now, it looks like to happen on more different controllers than

    Testing environment - uhm, what shall I say? On each of the two
    notebooks affected runs 64bit openSuSE 11.4 in more or less default
    configuration (apart from kernel, of course).

    Just do a "ls -lR /" and watch kernel log while plugging/unplugging

    Maybe running a 64bit system/kernel is part of picture? As far as I can
    see all affected machines run 64bit.

    > Well, the system I can reproduce it on is a production one, so I can't
    > really test too much on it. What exactly would you like to do?

    I've at least one machine available where I can test. So, if there is
    anything (preferably non destructive ;-) ) you want me to test this
    should be possible.

    Maybe I'll have a look if my netbook (running 32bit) is also affected.


    Michael Leun

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