Re: [PATCH 2/2] iommu/vt-d: Report superpage support in sysfs

From: Joerg Roedel
Date: Mon Aug 03 2015 - 10:30:36 EST


On Tue, Jul 14, 2015 at 03:25:04PM -0600, Alex Williamson wrote:
> We already have the VT-d capability register printed raw, but it
> typically involves a trip to the code or the spec to figure out
> whether superpages are supported. Make this easier with "2M_pages"
> and "1G_pages" sysfs entries that clearly report Y/N.
>
> Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
> ---
> drivers/iommu/intel-iommu.c | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)

Can we make this a generic entry for all iommu types and export a
pagesize bitmap instead?


Joerg

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