[PATCH v2 01/13] powerpc/iommu: Check that TCE page size is equal to it_page_size

2014-09-22 Thread Alexey Kardashevskiy
This checks that the TCE table page size is not bigger that the size of a page we just pinned and going to put its physical address to the table. Otherwise the hardware gets unwanted access to physical memory between the end of the actual page and the end of the aligned up TCE page.

[PATCH v2 01/13] powerpc/iommu: Check that TCE page size is equal to it_page_size

2014-09-22 Thread Alexey Kardashevskiy
This checks that the TCE table page size is not bigger that the size of a page we just pinned and going to put its physical address to the table. Otherwise the hardware gets unwanted access to physical memory between the end of the actual page and the end of the aligned up TCE page.