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Re: [PATCH RFC 01/11] mm: introduce hw_pte_t for PTE table storage
- To: Jürgen Groß <jgross@xxxxxxxx>
- From: Anshuman Khandual <anshuman.khandual@xxxxxxx>
- Date: Fri, 31 Jul 2026 12:29:40 +0530
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- Cc: Muhammad Usama Anjum <usama.anjum@xxxxxxx>, Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>, Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>, Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>, Tvrtko Ursulin <tursulin@xxxxxxxxxxx>, David Airlie <airlied@xxxxxxxxx>, Simona Vetter <simona@xxxxxxxx>, Dimitri Sivanich <dimitri.sivanich@xxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, Helge Deller <deller@xxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Muchun Song <muchun.song@xxxxxxxxx>, Oscar Salvador <osalvador@xxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, "Liam R. Howlett" <liam@xxxxxxxxxxxxx>, Lorenzo Stoakes <ljs@xxxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxx>, Nick Piggin <npiggin@xxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>, Chris Li <chrisl@xxxxxxxxxx>, Kairui Song <kasong@xxxxxxxxxxx>, Uladzislau Rezki <urezki@xxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxx>, Daniel Borkmann <daniel@xxxxxxxxxxxxx>, Andrii Nakryiko <andrii@xxxxxxxxxx>, Eduard Zingerman <eddyz87@xxxxxxxxx>, Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>, Namhyung Kim <namhyung@xxxxxxxxxx>, SJ Park <sj@xxxxxxxxxx>, "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Jason Gunthorpe <jgg@xxxxxxxx>, Leon Romanovsky <leon@xxxxxxxxxx>, Miaohe Lin <linmiaohe@xxxxxxxxxx>, Dennis Zhou <dennis@xxxxxxxxxx>, Tejun Heo <tj@xxxxxxxxxx>, Christoph Lameter <cl@xxxxxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, ziy@xxxxxxxxxx, pfalcato@xxxxxxx, agordeev@xxxxxxxxxxxxx, ryan.roberts@xxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, intel-gfx@xxxxxxxxxxxxxxxxxxxxx, dri-devel@xxxxxxxxxxxxxxxxxxxxx, linux-parisc@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, kasan-dev@xxxxxxxxxxxxxxxx, linux-trace-kernel@xxxxxxxxxxxxxxx, bpf@xxxxxxxxxxxxxxx, linux-perf-users@xxxxxxxxxxxxxxx, damon@xxxxxxxxxxxxxxx
- Delivery-date: Fri, 31 Jul 2026 06:59:53 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Fri, Jul 31, 2026 at 08:53:46AM +0200, Jürgen Groß wrote:
> On 31.07.26 07:49, Anshuman Khandual wrote:
> > On Mon, Jul 27, 2026 at 05:46:52PM +0100, Muhammad Usama Anjum wrote:
> > > pte_t is used both for logical PTE values and for entries stored in a PTE
> > > table, so pte_t * does not distinguish a pointer to a copied value from a
> > > pointer to table storage.
> >
> > Should we rather call them as "Linux PTE" and "HW PTE" instead ?
>
> What about "SW PTE"?
Both Linux PTE or SW PTE would be better than current Logical PTE description.
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