From: "Adrian Barnaś" <abarnas@google.com>
To: "Mike Rapoport (Microsoft)" <rppt@kernel.org>
Cc: linux-mm@kvack.org, Albert Ou <aou@eecs.berkeley.edu>,
Andrew Morton <akpm@linux-foundation.org>,
Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@alien8.de>,
Brendan Jackman <jackmanb@google.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
David Hildenbrand <david@kernel.org>,
Huacai Chen <chenhuacai@kernel.org>,
Ingo Molnar <mingo@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Kevin Brodsky <kevin.brodsky@arm.com>,
"Liam R. Howlett" <liam@infradead.org>,
Lorenzo Stoakes <ljs@kernel.org>, Michal Hocko <mhocko@suse.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Paul Walmsley <pjw@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Suren Baghdasaryan <surenb@google.com>,
Thomas Gleixner <tglx@kernel.org>,
Vlastimil Babka <vbabka@kernel.org>,
Will Deacon <will@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org,
loongarch@lists.linux.dev, x86@kernel.org,
Dave Hansen <dave.hansen@intel.com>,
Juergen Gross <jgross@suse.com>
Subject: Re: [PATCH RFC 00/18] arch, mm: create a generic set_memory/change_page_attr core
Date: Wed, 22 Jul 2026 15:17:19 +0000 [thread overview]
Message-ID: <amDe_3KFBc9CcIbo@google.com> (raw)
In-Reply-To: <20260721-generic-set-memory-v0-1-v1-0-2c1fc62306b3@kernel.org>
On Tue, Jul 21, 2026 at 07:23:23PM +0300, Mike Rapoport (Microsoft) wrote:
Hi Mike,
>Once this settles, the next step I'm planning is to convert arm64. This
>would be much more involved than loongarch and riscv together, so I
>didn't even aspire to include arm64 in the first RFC. That said, I have
>a very ugly arm64 prototype that rewrites arch/arm64/pageattr.c to use
>the generic CPA infrastructure and replaces the existing implementation
>of page table splits for systems that support bbml2. But there's a lot
>of yak shaving there to get from a PoC to actual patches.
Could you share your PoC for ARM64. I can help you with that and align my
execmem rox cache for ARM64 changes to the desired shape of this API.
Best regards,
Adrian
prev parent reply other threads:[~2026-07-22 15:17 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-21 16:23 [PATCH RFC 00/18] arch, mm: create a generic set_memory/change_page_attr core Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 01/18] x86/mm/pat: Don't gate cpa_lock on debug_pagealloc_enabled() Mike Rapoport (Microsoft)
2026-07-21 17:16 ` Lorenzo Stoakes (ARM)
2026-07-21 18:30 ` Mike Rapoport
2026-07-21 16:23 ` [PATCH RFC 02/18] x86/mm/pat: fix effective RW computation in lookup_address_in_pgd_attr() Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 03/18] x86/mm/pat: replace x86-speficic pg_level with generic pgtable_level Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 04/18] x86/mm/pat: use page table accessors for effective RW/NX bits Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 05/18] x86/mm/pat: use a generic helper for the large page size Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 06/18] x86/mm/pat: introduce an inline helper to check if alias needs update Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 07/18] x86/mm/pat: introduce cpa_handle_large_page() Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 08/18] x86/mm/pat: use cpa_split_data structure to pass split parameters Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 09/18] x86/mm/pat: use a single locked lookup for PTE verification Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 10/18] x86/mm/pat: move the large page size calculation to should_split_large_page Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 11/18] x86/mm/pat, mm: set_memory: pull change_page_attr() core to mm/ Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 12/18] x86/pat/mm, mm/set_memory: abstract the CPA page table lock Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 13/18] mm/set_memory: read page table entries with pXdp_get() Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 14/18] x86/mm/pat, mm: move cpa-test to mm Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 15/18] riscv: convert set_memory to the generic CPA implementation Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 16/18] riscv: make set_direct_map_*_noflush actually noflush Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 17/18] loongarch: convert set_memory to the generic CPA implementation Mike Rapoport (Microsoft)
2026-07-21 16:23 ` [PATCH RFC 18/18] loongarch: make set_direct_map_*_noflush actually noflush Mike Rapoport (Microsoft)
2026-07-21 17:19 ` [PATCH RFC 00/18] arch, mm: create a generic set_memory/change_page_attr core Borislav Petkov
2026-07-21 18:28 ` Mike Rapoport
2026-07-21 19:54 ` Borislav Petkov
2026-07-22 6:50 ` Mike Rapoport
2026-07-22 13:20 ` [syzbot ci] " syzbot ci
2026-07-22 15:17 ` Adrian Barnaś [this message]
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