Re: [RFC V2] mm: Enable generic pfn_valid() to handle early sections with memmap holes
From: Mike Rapoport <rppt@kernel.org>
Date: 2021-04-22 10:04:12
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linux-mm, lkml
On Thu, Apr 22, 2021 at 11:48:58AM +0200, David Hildenbrand wrote:
quoted
quoted
IOW, avoiding having to adjust generic pfn_valid()/pfn_to_online_page() at all. Am i missing something or should that be possible?We are back again to the question "should arm64 free its memmap". If the answer is no, we don't need arm64::pfn_valid() for SPARSEMEM at all. If the answer is yes, Anshuman's patch is way better than a custom pfn_valid().Well, I propose something in between: stop freeing with SPARSEMEM, continue freeing with FLATMEM.
I'm all for it. -- Sincerely yours, Mike. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel