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From: Anshuman Khandual <anshuman.khandual@arm.com>
To: Pasha Tatashin <pasha.tatashin@soleen.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	linux-doc@vger.kernel.org, akpm@linux-foundation.org,
	rientjes@google.com, pjt@google.com, weixugc@google.com,
	gthelen@google.com, mingo@redhat.com, corbet@lwn.net,
	will@kernel.org, rppt@kernel.org, keescook@chromium.org,
	tglx@linutronix.de, peterz@infradead.org, masahiroy@kernel.org,
	samitolvanen@google.com, dave.hansen@linux.intel.com,
	x86@kernel.org, frederic@kernel.org, hpa@zytor.com,
	aneesh.kumar@linux.ibm.com
Subject: Re: [RFC 1/3] mm: ptep_clear() page table helper
Date: Wed, 17 Nov 2021 14:21:47 +0530	[thread overview]
Message-ID: <e461ba08-0aa8-e405-6383-5d921443135a@arm.com> (raw)
In-Reply-To: <20211116220038.116484-2-pasha.tatashin@soleen.com>



On 11/17/21 3:30 AM, Pasha Tatashin wrote:
> diff --git a/Documentation/vm/arch_pgtable_helpers.rst b/Documentation/vm/arch_pgtable_helpers.rst
> index 552567d863b8..fbe06ec75370 100644
> --- a/Documentation/vm/arch_pgtable_helpers.rst
> +++ b/Documentation/vm/arch_pgtable_helpers.rst
> @@ -66,9 +66,11 @@ PTE Page Table Helpers
>  +---------------------------+--------------------------------------------------+
>  | pte_mknotpresent          | Invalidates a mapped PTE                         |
>  +---------------------------+--------------------------------------------------+
> -| ptep_get_and_clear        | Clears a PTE                                     |
> +| ptep_clear                | Clears a PTE                                     |
>  +---------------------------+--------------------------------------------------+
> -| ptep_get_and_clear_full   | Clears a PTE                                     |
> +| ptep_get_and_clear        | Clears and returns PTE                           |
> ++---------------------------+--------------------------------------------------+
> +| ptep_get_and_clear_full   | Clears and returns PTE (batched PTE unmap)       |
>  +---------------------------+--------------------------------------------------+
>  | ptep_test_and_clear_young | Clears young from a PTE                          |
>  +---------------------------+--------------------------------------------------+

Just curious. This does not have a corresponding change in mm/debug_vm_pgtable.c ?

  reply	other threads:[~2021-11-17  8:52 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-16 22:00 [RFC 0/3] page table check Pasha Tatashin
2021-11-16 22:00 ` [RFC 1/3] mm: ptep_clear() page table helper Pasha Tatashin
2021-11-17  8:51   ` Anshuman Khandual [this message]
2021-11-17 16:43     ` Pasha Tatashin
2021-11-16 22:00 ` [RFC 2/3] mm: page table check Pasha Tatashin
2021-11-17  8:08   ` Jonathan Corbet
2021-11-17 16:47     ` Pasha Tatashin
2021-11-16 22:00 ` [RFC 3/3] x86: mm: add x86_64 support for " Pasha Tatashin

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