On 02/04/2013 07:02:14 AM, Joerg Roedel wrote:
On Thu, Jan 31, 2013 at 09:32:26AM +0000, Sethi Varun-B16395 wrote:
> We need a mechanism to determine the maximum number of subwindows
supported by PAMU. How about representing it in the iommu_domain
structure:
> struct iommu_domain {
> struct iommu_ops *ops;
> void *priv;
> iommu_fault_handler_t handler;
> void *handler_token;
> struct iommu_domain_geometry geometry;
> u32 max_sub_windows; -----> maximum number of sub windows
supported by the hardware.
> }
I`ll leave that flag to the private-data of the IOMMU domain. Instead
I
added a DOMAIN_ATTR_WINDOWS attribute to get/set the number of
subwindows. I'll post the updated patch-set soon.
If it's private data, how does the caller know what sort of geometry it
can request?
-Scott
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