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[Xen-devel] is_xen_swiotlb_buffer() vs CONFIG_HIGHMEM

To: "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>
Subject: [Xen-devel] is_xen_swiotlb_buffer() vs CONFIG_HIGHMEM
From: "Jan Beulich" <JBeulich@xxxxxxxxxx>
Date: Mon, 14 Dec 2009 15:02:31 +0000
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Jeremy,

shouldn't is_xen_swiotlb_buffer() also check against e.g. highstart_pfn
to deal with wrap-around potentially leading to aliasing of
[xen_io_tlb_start,xen_io_tlb_end)?

Jan


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