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[Xen-devel] Re: RFC: Using grant table to give iomem permission

When the hypervisor tries to do this grant in xen/common/grant_table.c
it (i) notices that it is an iomem_map rather than device_map or
host_map; (ii) it is from dom0; and (iii) it is not a RAM page.  It then
attempts to call iomem_permit_access().

Hi Karen, Thanks for the patch, I find it useful... but I am wondering why you need to check it is from a dom0 ... I maybe not getting the reason, but iomem_map should be available for page sharing among all domains, shouldn't it ?

Thank you,
-- Lamia Youseff

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