[PATCH] ARM: Add PI/robust mutexes support for SMP kernels

Catalin Marinas catalin.marinas at arm.com
Tue Jun 8 06:42:28 EDT 2010


On Tue, 2010-06-08 at 11:26 +0100, Russell King - ARM Linux wrote:
> On Tue, Jun 08, 2010 at 11:04:15AM +0100, Catalin Marinas wrote:
> > On Mon, 2010-06-07 at 22:52 +0100, Russell King - ARM Linux wrote:
> > > On Mon, Jun 07, 2010 at 10:05:57PM +0100, Catalin Marinas wrote:
> > > > But as I said, we already have patches to change the kernel R/W
> > > > permission for RO user pages.
> > >
> > > ... but they introduce their own problem.
> >
> > And these problem are ...
> 
> As pointed out in May.

Your first point was FIQ handlers and I updated the patch.

Your second point was I/D cache coherency and I also replied saying that
it doesn't matter on non-aliasing VIPT caches. There was no further
reply from you.

-- 
Catalin




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