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Date: Wed, 25 Aug 2021 09:46:02 +0200 From: Christoph Hellwig <hch@....de> To: Alex Sierra <alex.sierra@....com> Cc: akpm@...ux-foundation.org, Felix.Kuehling@....com, linux-mm@...ck.org, rcampbell@...dia.com, linux-ext4@...r.kernel.org, linux-xfs@...r.kernel.org, amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org, hch@....de, jgg@...dia.com, jglisse@...hat.com Subject: Re: [PATCH v1 03/14] mm: add iomem vma selection for memory migration On Tue, Aug 24, 2021 at 10:48:17PM -0500, Alex Sierra wrote: > } else { > - if (!(migrate->flags & MIGRATE_VMA_SELECT_SYSTEM)) > + if (!(migrate->flags & MIGRATE_VMA_SELECT_SYSTEM) && > + !(migrate->flags & MIGRATE_VMA_SELECT_IOMEM)) > goto next; > pfn = pte_pfn(pte); > if (is_zero_pfn(pfn)) { .. also how is this going to work for the device public memory? That should be pte_special() an thus fail vm_normal_page.
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