Eric Anholt wrote: > On Mon, 2009-01-19 at 13:00 -0800, Jesse Barnes wrote: >> This should help avoid problems with unsupported userspace programs or >> configurations running on top of a KMS enabled driver. Updates the >> ioremap to nocache as well, since that's really what we want to track. >> >> Signed-off-by: Jesse Barnes <jbar...@virtuousgeek.org> > > For the record: the reason I've avoided doing this one is that when > jbarnes and I talked, we figured that this prevents userland from > mapping at all, though we really only care about preventing write > mapping of the registers/aperture. Since we've still got a bunch of > really useful userland tools for debugging that rely on read-only > mapping of registers, we're pending this until we get that information > into the kernel somehow. > Is there a reason why booting with iomem=relaxed isn't enough to let the userspace tools work? -- Simon Farnsworth
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