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From: Pasha Tatashin <pasha.tatashin@soleen.com>
To: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
	linux-mm <linux-mm@kvack.org>,
	Linux Doc Mailing List <linux-doc@vger.kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	David Rientjes <rientjes@google.com>,
	Paul Turner <pjt@google.com>,
	weixugc@google.com, Greg Thelen <gthelen@google.com>,
	Ingo Molnar <mingo@redhat.com>, Jonathan Corbet <corbet@lwn.net>,
	Will Deacon <will@kernel.org>, Mike Rapoport <rppt@kernel.org>,
	Kees Cook <keescook@chromium.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>,
	masahiroy@kernel.org, Sami Tolvanen <samitolvanen@google.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
	<x86@kernel.org>,
	frederic@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Subject: Re: [RFC 1/3] mm: ptep_clear() page table helper
Date: Wed, 17 Nov 2021 11:43:55 -0500	[thread overview]
Message-ID: <CA+CK2bDCApyAB2X9v8LH8Z2v18Fk19RYJ_qiucFUrX07N5g3hg@mail.gmail.com> (raw)
In-Reply-To: <e461ba08-0aa8-e405-6383-5d921443135a@arm.com>

On Wed, Nov 17, 2021 at 3:52 AM Anshuman Khandual
<anshuman.khandual@arm.com> wrote:
>
>
>
> 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 ?

You are right, I need to replace it in mm/debug_vm_pgtable.c as well.
I will do it in the next version.

Thanks,
Pasha

  reply	other threads:[~2021-11-17 16:44 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
2021-11-17 16:43     ` Pasha Tatashin [this message]
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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