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From: Ingo Molnar <mingo@kernel.org>
To: Andrew Donnellan <ajd@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org, x86@kernel.org,
	linux-mm@kvack.org, linux-riscv@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, pasha.tatashin@soleen.com,
	sweettea-kernel@dorminy.me, christophe.leroy@csgroup.eu
Subject: Re: [PATCH v14 00/11] Support page table check on PowerPC
Date: Fri, 11 Apr 2025 11:10:00 +0200	[thread overview]
Message-ID: <Z_jcaCdMFENW8KSG@gmail.com> (raw)
In-Reply-To: <20250411054354.511145-1-ajd@linux.ibm.com>


* Andrew Donnellan <ajd@linux.ibm.com> wrote:

> Support page table check on all PowerPC platforms. This works by
> serialising assignments, reassignments and clears of page table
> entries at each level in order to ensure that anonymous mappings
> have at most one writable consumer, and likewise that file-backed
> mappings are not simultaneously also anonymous mappings.
> 
> In order to support this infrastructure, a number of stubs must be
> defined for all powerpc platforms. Additionally, separate set_pte_at()
> and set_pte_at_unchecked(), to allow for internal, uninstrumented mappings.

>  arch/x86/include/asm/pgtable.h               | 22 +++----

For all the x86 <asm/pgtable.h> function parameter extensions changes:

  Acked-by: Ingo Molnar <mingo@kernel.org>

Thanks,

	Ingo


WARNING: multiple messages have this Message-ID (diff)
From: Ingo Molnar <mingo@kernel.org>
To: Andrew Donnellan <ajd@linux.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org, x86@kernel.org,
	linux-mm@kvack.org, linux-riscv@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, pasha.tatashin@soleen.com,
	sweettea-kernel@dorminy.me, christophe.leroy@csgroup.eu
Subject: Re: [PATCH v14 00/11] Support page table check on PowerPC
Date: Fri, 11 Apr 2025 11:10:00 +0200	[thread overview]
Message-ID: <Z_jcaCdMFENW8KSG@gmail.com> (raw)
In-Reply-To: <20250411054354.511145-1-ajd@linux.ibm.com>


* Andrew Donnellan <ajd@linux.ibm.com> wrote:

> Support page table check on all PowerPC platforms. This works by
> serialising assignments, reassignments and clears of page table
> entries at each level in order to ensure that anonymous mappings
> have at most one writable consumer, and likewise that file-backed
> mappings are not simultaneously also anonymous mappings.
> 
> In order to support this infrastructure, a number of stubs must be
> defined for all powerpc platforms. Additionally, separate set_pte_at()
> and set_pte_at_unchecked(), to allow for internal, uninstrumented mappings.

>  arch/x86/include/asm/pgtable.h               | 22 +++----

For all the x86 <asm/pgtable.h> function parameter extensions changes:

  Acked-by: Ingo Molnar <mingo@kernel.org>

Thanks,

	Ingo

_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

  parent reply	other threads:[~2025-04-11  9:13 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-11  5:43 [PATCH v14 00/11] Support page table check on PowerPC Andrew Donnellan
2025-04-11  5:43 ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 01/11] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pud_set() Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 02/11] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pmd_set() Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 03/11] mm/page_table_check: Provide addr parameter to page_table_check_pte_set() Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 04/11] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pud_clear() Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 05/11] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pmd_clear() Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 06/11] mm/page_table_check: Reinstate address parameter in [__]page_table_check_pte_clear() Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 07/11] mm: Provide address parameter to p{te,md,ud}_user_accessible_page() Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 08/11] powerpc: mm: Add pud_pfn() stub Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 09/11] powerpc: mm: Implement *_user_accessible_page() for ptes Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 10/11] powerpc: mm: Use set_pte_at_unchecked() for internal usages Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  5:43 ` [PATCH v14 11/11] powerpc: mm: Support page table check Andrew Donnellan
2025-04-11  5:43   ` Andrew Donnellan
2025-04-11  9:10 ` Ingo Molnar [this message]
2025-04-11  9:10   ` [PATCH v14 00/11] Support page table check on PowerPC Ingo Molnar
2025-05-12  5:04 ` Andrew Donnellan
2025-05-12  5:04   ` Andrew Donnellan
2025-06-10  7:33 ` Christophe Leroy
2025-06-10  7:33   ` Christophe Leroy
2025-06-11  3:16   ` Andrew Donnellan
2025-06-11  3:16     ` Andrew Donnellan

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