> Why does it need that flush? To prepare the update-area (in the Shadow-FB) for DMA to RE. kind regards On Fri, 13 Feb 2009, Ralf Baechle wrote: > Date: Fri, 13 Feb 2009 23:56:03 +0000 > From: Ralf Baechle <ralf@xxxxxxxxxxxxxx> > To: peter fuerst <post@xxxxxxxx> > Cc: naresh kamboju <naresh.kernel@xxxxxxxxx>, linux-mips@xxxxxxxxxxxxxx > Subject: Re: cacheflush system call-MIPS > > On Sat, Feb 14, 2009 at 12:50:46AM +0100, peter fuerst wrote: > > > there is one more good reason to ... : the Impact Xserver needs to do > > a cacheflush(a,w,DCACHE) as part of the refresh-sequence. > > And hence requires a sys_cacheflush, let's say, more conforming to the > > man-page (or some disgusting new ioctl in the Impact kernel-driver to > > do an equivalent operation ;-) > > Why does it need that flush? > > Ralf > >
