Re: [PATCH] iommu/amd: Add kernel parameters to limit V1 page-sizes

[Joerg Roedel]

On Thu, Sep 05, 2024 at 09:05:31AM -0300, Jason Gunthorpe wrote:
> On Thu, Sep 05, 2024 at 09:34:07AM +0200, Joerg Roedel wrote:
> > On Thu, Sep 05, 2024 at 03:31:08PM +0800, Baolu Lu wrote:
> > > "iommu.nohugepages=1"?
> > 
> > Generally yes, but that requires to touch all drivers to make the
> > behavior consistent. We can start this effort on-top of this change, if
> > desired.
> 
> Let's at least use the same keyword that already exists though??

You mean amd_iommu=sp_off? I am not in favour of that, in the Linux
world the term 'hugepage' is more common than 'superpage'. So I
would avoid spreading the use of the later. We can extend that later to
the iommu.nohugepages parameter suggested by Baolu.

Regards,

	Joerg