Re: [PATCH 01/34] AMD IOMMU: add Kconfig entry

From: Joerg Roedel
Date: Fri Jun 27 2008 - 13:09:09 EST


On Fri, Jun 27, 2008 at 05:25:58PM +0300, Adrian Bunk wrote:
> On Thu, Jun 26, 2008 at 09:27:37PM +0200, Joerg Roedel wrote:
> > This patch adds the Kconfig entry for the AMD IOMMU driver.
> >
> > Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
> > ---
> > arch/x86/Kconfig | 7 +++++++
> > 1 files changed, 7 insertions(+), 0 deletions(-)
> >
> > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> > index e0edaaa..5a82f18 100644
> > --- a/arch/x86/Kconfig
> > +++ b/arch/x86/Kconfig
> > @@ -549,6 +549,13 @@ config CALGARY_IOMMU_ENABLED_BY_DEFAULT
> > Calgary anyway, pass 'iommu=calgary' on the kernel command line.
> > If unsure, say Y.
> >
> > +config AMD_IOMMU
> > + bool "AMD IOMMU support"
> > + select SWIOTL
> > + depends on X86_64 && PCI
> > + help
> > + Select this to get support for AMD IOMMU hardware in your system.
> > +
> >...
>
> This tells neither what as IOMMU is nor whether my system actually has
> one.
>
> Please shortly describe in the help text what an IOMMU is and which
> AMD systems have an IOMMU.
>
> The goal is that a system administrator building a kernel for his system
> gets enough information for deciding whether to enable or disable this
> option.

Ok, I will provide a new help text as an update to this patch series.

Joerg
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