On Tue, 2007-07-17 at 11:09 -0500, Linas Vepstas wrote: > Per conversations with BenH, iommu virtual merging should no longer > be considered to be an "experimental" feature. In particular, > CONFIG_VMERGE has been set to "y" in te defconfigs for quite a while. > > Signed-off-by: Linas Vepstas <[EMAIL PROTECTED]>
Acked-by: Benjamin Herrenschmidt <[EMAIL PROTECTED]> > ---- > arch/powerpc/Kconfig | 11 ++++++----- > 1 file changed, 6 insertions(+), 5 deletions(-) > > Index: linux-2.6.22-git2/arch/powerpc/Kconfig > =================================================================== > --- linux-2.6.22-git2.orig/arch/powerpc/Kconfig 2007-07-08 > 18:32:17.000000000 -0500 > +++ linux-2.6.22-git2/arch/powerpc/Kconfig 2007-07-17 11:08:18.000000000 > -0500 > @@ -430,16 +430,17 @@ config MATH_EMULATION > instructions to run. > > config IOMMU_VMERGE > - bool "Enable IOMMU virtual merging (EXPERIMENTAL)" > - depends on EXPERIMENTAL && PPC64 > - default n > + bool "Enable IOMMU virtual merging" > + depends on PPC64 > + default y > help > Cause IO segments sent to a device for DMA to be merged virtually > by the IOMMU when they happen to have been allocated contiguously. > This doesn't add pressure to the IOMMU allocator. However, some > drivers don't support getting large merged segments coming back > - from *_map_sg(). Say Y if you know the drivers you are using are > - properly handling this case. > + from *_map_sg(). > + > + Most drivers don't have this problem; it is safe to say Y here. > > config HOTPLUG_CPU > bool "Support for enabling/disabling CPUs" _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
