From: David Hildenbrand <david@redhat.com>
To: Ryan Roberts <ryan.roberts@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Joey Gouly <joey.gouly@arm.com>,
Ard Biesheuvel <ardb@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Peter Xu <peterx@redhat.com>, Mike Rapoport <rppt@linux.ibm.com>,
Shivansh Vij <shivanshvij@outlook.com>
Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 3/3] arm64/mm: Add uffd write-protect support
Date: Mon, 29 Apr 2024 18:08:52 +0200 [thread overview]
Message-ID: <9f0b3a67-a570-4e2d-8968-234d7cd641b8@redhat.com> (raw)
In-Reply-To: <20240429140208.238056-4-ryan.roberts@arm.com>
On 29.04.24 16:02, Ryan Roberts wrote:
> Let's use the newly-free PTE SW bit (58) to add support for uffd-wp.
>
> The standard handlers are implemented for set/test/clear for both pte
> and pmd. Additionally we must also track the uffd-wp state as a pte swp
> bit, so use a free swap pte bit (3).
>
> Acked-by: Peter Xu <peterx@redhat.com>
> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
> Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
> ---
Reviewed-by: David Hildenbrand <david@redhat.com>
--
Cheers,
David / dhildenb
prev parent reply other threads:[~2024-04-29 16:08 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-29 14:02 [PATCH v2 0/3] arm64/mm: Enable userfaultfd write-protect Ryan Roberts
2024-04-29 14:02 ` [PATCH v2 1/3] arm64/mm: Refactor PMD_PRESENT_INVALID and PTE_PROT_NONE bits Ryan Roberts
2024-04-29 16:12 ` David Hildenbrand
2024-04-29 16:20 ` Catalin Marinas
2024-04-29 17:15 ` Ryan Roberts
2024-04-30 11:11 ` Catalin Marinas
2024-04-30 11:35 ` Ryan Roberts
2024-04-30 13:28 ` Catalin Marinas
2024-04-30 13:34 ` Ryan Roberts
2024-04-30 11:37 ` David Hildenbrand
2024-04-30 12:53 ` Ryan Roberts
2024-04-30 12:58 ` David Hildenbrand
2024-04-30 13:30 ` Will Deacon
2024-04-30 14:02 ` Ryan Roberts
2024-04-30 15:04 ` Will Deacon
2024-04-30 15:39 ` Ryan Roberts
2024-04-29 14:02 ` [PATCH v2 2/3] arm64/mm: Move PTE_INVALID to overlay PTE_NS Ryan Roberts
2024-04-29 16:34 ` Catalin Marinas
2024-04-29 14:02 ` [PATCH v2 3/3] arm64/mm: Add uffd write-protect support Ryan Roberts
2024-04-29 16:08 ` David Hildenbrand [this message]
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