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 v4 4/4] arm64/mm: Add uffd write-protect support
Date: Tue, 7 May 2024 13:45:41 +0200 [thread overview]
Message-ID: <a980d401-6d41-4700-8775-c486a50f5c5a@redhat.com> (raw)
In-Reply-To: <20240503144604.151095-5-ryan.roberts@arm.com>
On 03.05.24 16:46, 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>
> Reviewed-by: David Hildenbrand <david@redhat.com>
> Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
LGTM, thanks!
Reviewed-by: David Hildenbrand <david@redhat.com>
--
Cheers,
David / dhildenb
next prev parent reply other threads:[~2024-05-07 11:45 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-03 14:45 [PATCH v4 0/4] arm64/mm: Enable userfaultfd write-protect Ryan Roberts
2024-05-03 14:45 ` [PATCH v4 1/4] arm64/mm: generalize PMD_PRESENT_INVALID for all levels Ryan Roberts
2024-05-07 11:38 ` David Hildenbrand
2024-05-07 12:34 ` Ryan Roberts
2024-05-07 14:08 ` Catalin Marinas
2024-05-07 15:06 ` Ryan Roberts
2024-05-08 9:43 ` Anshuman Khandual
2024-05-03 14:46 ` [PATCH v4 2/4] arm64/mm: Remove PTE_PROT_NONE bit Ryan Roberts
2024-05-07 11:40 ` David Hildenbrand
2024-05-08 9:50 ` Anshuman Khandual
2024-05-03 14:46 ` [PATCH v4 3/4] arm64/mm: Move PTE_PRESENT_INVALID to overlay PTE_NG Ryan Roberts
2024-05-07 11:43 ` David Hildenbrand
2024-05-03 14:46 ` [PATCH v4 4/4] arm64/mm: Add uffd write-protect support Ryan Roberts
2024-05-07 11:45 ` David Hildenbrand [this message]
2024-05-07 11:07 ` [PATCH v4 0/4] arm64/mm: Enable userfaultfd write-protect Will Deacon
2024-05-07 11:17 ` Ryan Roberts
2024-05-07 11:45 ` Catalin Marinas
2024-05-08 10:00 ` Anshuman Khandual
2024-05-08 10:14 ` Ryan Roberts
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