lkml.org 
[lkml]   [2010]   [Dec]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH] mtd: allow mtd and jffs2 when ARCH=um

    On one hand you've got uml, which simply doesn't have mmio. On the other
    there's mtd, which began as a method for accessing hardware devices that
    are often accessed using mmio. But then the mtd subsystem developed
    emulations of that hardware that are software based and thus don't
    require mmio. It's mainly these emulated backends I'm interested in
    exposing.

    Nothing is going to change so that it makes sense to have any real
    mmio-using hardware driver run on uml. The question you raise is, are
    there other classes of driver with a software-only subset that can be
    exposed on uml? And if so, would adding stub implementations of
    readb/writeb and friends actually be enough to make those work? I'm not
    aware of any, so at present I don't think the argument for implementing
    this in uml arch code is very strong. Or in other words, I don't think a
    "general solution" would be very general.

    Jason

    On Tue, Dec 14, 2010 at 10:01:33PM +0200, Artem Bityutskiy wrote:
    > This problem does not seem to be mtd-specific, right? So my point was
    > that it would be nicer to come up with a general solution.


    \
     
     \ /
      Last update: 2010-12-14 22:27    [W:0.019 / U:32.320 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site