From: David Hildenbrand <david@redhat.com>
To: Ryan Roberts <ryan.roberts@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Ard Biesheuvel <ardb@kernel.org>,
Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Andrey Ryabinin <ryabinin.a.a@gmail.com>,
Alexander Potapenko <glider@google.com>,
Andrey Konovalov <andreyknvl@gmail.com>,
Dmitry Vyukov <dvyukov@google.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Matthew Wilcox <willy@infradead.org>, Yu Zhao <yuzhao@google.com>,
Mark Rutland <mark.rutland@arm.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
John Hubbard <jhubbard@nvidia.com>, Zi Yan <ziy@nvidia.com>
Cc: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 01/14] mm: Batch-copy PTE ranges during fork()
Date: Fri, 24 Nov 2023 09:53:01 +0100 [thread overview]
Message-ID: <1fb403e1-58f0-414c-be36-4872bc0ac0ae@redhat.com> (raw)
In-Reply-To: <42f9e03f-86ad-418e-a337-7aef202e6a5b@arm.com>
>> One could simply skip batching for now on pte_protnone() and focus on the
>> "writable" vs. "not-writable".
>
> I'm not sure we can simply "skip" batching on pte_protnone() since we will need
> to terminate the batch if we spot it. But if we have to look for it anyway, we
> might as well just terminate the batch when the value of pte_protnone()
> *changes*. I'm also proposing to take this approach for pte_uffd_wp() which also
> needs to be carefully preserved per-pte.
Yes, that's what I meant.
--
Cheers,
David / dhildenb
next prev parent reply other threads:[~2023-11-24 8:53 UTC|newest]
Thread overview: 102+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-15 16:30 [PATCH v2 00/14] Transparent Contiguous PTEs for User Mappings Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 01/14] mm: Batch-copy PTE ranges during fork() Ryan Roberts
2023-11-15 21:26 ` kernel test robot
2023-11-16 10:07 ` Ryan Roberts
2023-11-16 10:12 ` David Hildenbrand
2023-11-16 10:36 ` Ryan Roberts
2023-11-16 11:01 ` David Hildenbrand
2023-11-16 11:13 ` Ryan Roberts
2023-11-15 21:37 ` Andrew Morton
2023-11-16 9:34 ` Ryan Roberts
2023-12-04 11:01 ` Christophe Leroy
2023-11-15 22:40 ` kernel test robot
2023-11-16 10:03 ` David Hildenbrand
2023-11-16 10:26 ` Ryan Roberts
2023-11-27 8:42 ` Barry Song
2023-11-27 9:35 ` Ryan Roberts
2023-11-27 9:59 ` Barry Song
2023-11-27 10:10 ` Ryan Roberts
2023-11-27 10:28 ` Barry Song
2023-11-27 11:07 ` Ryan Roberts
2023-11-27 20:34 ` Barry Song
2023-11-28 9:14 ` Ryan Roberts
2023-11-28 9:49 ` Barry Song
2023-11-28 10:49 ` Ryan Roberts
2023-11-28 21:06 ` Barry Song
2023-11-29 12:21 ` Ryan Roberts
2023-11-30 0:51 ` Barry Song
2023-11-16 11:03 ` David Hildenbrand
2023-11-16 11:20 ` Ryan Roberts
2023-11-16 13:20 ` David Hildenbrand
2023-11-16 13:49 ` Ryan Roberts
2023-11-16 14:13 ` David Hildenbrand
2023-11-16 14:15 ` David Hildenbrand
2023-11-16 17:58 ` Ryan Roberts
2023-11-23 10:26 ` Ryan Roberts
2023-11-23 12:12 ` David Hildenbrand
2023-11-23 12:28 ` Ryan Roberts
2023-11-24 8:53 ` David Hildenbrand [this message]
2023-11-23 4:26 ` Alistair Popple
2023-11-23 14:43 ` Ryan Roberts
2023-11-23 23:50 ` Alistair Popple
2023-11-27 5:54 ` Barry Song
2023-11-27 9:24 ` Ryan Roberts
2023-11-28 0:11 ` Barry Song
2023-11-28 11:00 ` Ryan Roberts
2023-11-28 19:00 ` Barry Song
2023-11-29 12:29 ` Ryan Roberts
2023-11-29 13:09 ` Barry Song
2023-11-29 14:07 ` Ryan Roberts
2023-11-30 0:34 ` Barry Song
2023-11-15 16:30 ` [PATCH v2 02/14] arm64/mm: set_pte(): New layer to manage contig bit Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 03/14] arm64/mm: set_ptes()/set_pte_at(): " Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 04/14] arm64/mm: pte_clear(): " Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 05/14] arm64/mm: ptep_get_and_clear(): " Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 06/14] arm64/mm: ptep_test_and_clear_young(): " Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 07/14] arm64/mm: ptep_clear_flush_young(): " Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 08/14] arm64/mm: ptep_set_wrprotect(): " Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 09/14] arm64/mm: ptep_set_access_flags(): " Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 10/14] arm64/mm: ptep_get(): " Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 11/14] arm64/mm: Split __flush_tlb_range() to elide trailing DSB Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 12/14] arm64/mm: Wire up PTE_CONT for user mappings Ryan Roberts
2023-11-21 11:22 ` Alistair Popple
2023-11-21 15:14 ` Ryan Roberts
2023-11-22 6:01 ` Alistair Popple
2023-11-22 8:35 ` Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 13/14] arm64/mm: Implement ptep_set_wrprotects() to optimize fork() Ryan Roberts
2023-11-15 16:30 ` [PATCH v2 14/14] arm64/mm: Add ptep_get_and_clear_full() to optimize process teardown Ryan Roberts
2023-11-23 5:13 ` Alistair Popple
2023-11-23 16:01 ` Ryan Roberts
2023-11-24 1:35 ` Alistair Popple
2023-11-24 8:54 ` Ryan Roberts
2023-11-27 7:34 ` Alistair Popple
2023-11-27 8:53 ` Ryan Roberts
2023-11-28 6:54 ` Alistair Popple
2023-11-28 12:45 ` Ryan Roberts
2023-11-28 16:55 ` Ryan Roberts
2023-11-30 5:07 ` Alistair Popple
2023-11-30 5:57 ` Barry Song
2023-11-30 11:47 ` Ryan Roberts
2023-12-03 23:20 ` Alistair Popple
2023-12-04 9:39 ` Ryan Roberts
2023-11-28 7:32 ` Barry Song
2023-11-28 11:15 ` Ryan Roberts
2023-11-28 8:17 ` Barry Song
2023-11-28 11:49 ` Ryan Roberts
2023-11-28 20:23 ` Barry Song
2023-11-29 12:43 ` Ryan Roberts
2023-11-29 13:00 ` Barry Song
2023-11-30 5:35 ` Barry Song
2023-11-30 12:00 ` Ryan Roberts
2023-12-03 21:41 ` Barry Song
2023-11-27 3:18 ` [PATCH v2 00/14] Transparent Contiguous PTEs for User Mappings Barry Song
2023-11-27 9:15 ` Ryan Roberts
2023-11-27 10:35 ` Barry Song
2023-11-27 11:11 ` Ryan Roberts
2023-11-27 22:53 ` Barry Song
2023-11-28 11:52 ` Ryan Roberts
2023-11-28 3:13 ` Yang Shi
2023-11-28 11:58 ` Ryan Roberts
2023-11-28 5:49 ` Barry Song
2023-11-28 12:08 ` Ryan Roberts
2023-11-28 19:37 ` Barry Song
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