From: Mike Rapoport <rppt@kernel.org>
To: linux-arm-kernel@lists.infradead.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Ard Biesheuvel <ardb@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
David Hildenbrand <david@redhat.com>,
Marc Zyngier <maz@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Mike Rapoport <rppt@kernel.org>,
Mike Rapoport <rppt@linux.ibm.com>, Will Deacon <will@kernel.org>,
kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: [PATCH v2 0/4] arm64: drop pfn_valid_within() and simplify pfn_valid()
Date: Wed, 21 Apr 2021 09:51:04 +0300 [thread overview]
Message-ID: <20210421065108.1987-1-rppt@kernel.org> (raw)
From: Mike Rapoport <rppt@linux.ibm.com>
Hi,
These patches aim to remove CONFIG_HOLES_IN_ZONE and essentially hardwire
pfn_valid_within() to 1.
The idea is to mark NOMAP pages as reserved in the memory map and restore
the intended semantics of pfn_valid() to designate availability of struct
page for a pfn.
With this the core mm will be able to cope with the fact that it cannot use
NOMAP pages and the holes created by NOMAP ranges within MAX_ORDER blocks
will be treated correctly even without the need for pfn_valid_within.
The patches are only boot tested on qemu-system-aarch64 so I'd really
appreciate memory stress tests on real hardware.
If this actually works we'll be one step closer to drop custom pfn_valid()
on arm64 altogether.
v2:
* Add check for PFN overflow in pfn_is_map_memory()
* Add Acked-by and Reviewed-by tags, thanks David.
v1: Link: https://lore.kernel.org/lkml/20210420090925.7457-1-rppt@kernel.org
* Add comment about the semantics of pfn_valid() as Anshuman suggested
* Extend comments about MEMBLOCK_NOMAP, per Anshuman
* Use pfn_is_map_memory() name for the exported wrapper for
memblock_is_map_memory(). It is still local to arch/arm64 in the end
because of header dependency issues.
rfc: Link: https://lore.kernel.org/lkml/20210407172607.8812-1-rppt@kernel.org
Mike Rapoport (4):
include/linux/mmzone.h: add documentation for pfn_valid()
memblock: update initialization of reserved pages
arm64: decouple check whether pfn is in linear map from pfn_valid()
arm64: drop pfn_valid_within() and simplify pfn_valid()
arch/arm64/Kconfig | 3 ---
arch/arm64/include/asm/memory.h | 2 +-
arch/arm64/include/asm/page.h | 1 +
arch/arm64/kvm/mmu.c | 2 +-
arch/arm64/mm/init.c | 10 ++++++++--
arch/arm64/mm/ioremap.c | 4 ++--
arch/arm64/mm/mmu.c | 2 +-
include/linux/memblock.h | 4 +++-
include/linux/mmzone.h | 11 +++++++++++
mm/memblock.c | 28 ++++++++++++++++++++++++++--
10 files changed, 54 insertions(+), 13 deletions(-)
base-commit: e49d033bddf5b565044e2abe4241353959bc9120
--
2.28.0
*** BLURB HERE ***
Mike Rapoport (4):
include/linux/mmzone.h: add documentation for pfn_valid()
memblock: update initialization of reserved pages
arm64: decouple check whether pfn is in linear map from pfn_valid()
arm64: drop pfn_valid_within() and simplify pfn_valid()
arch/arm64/Kconfig | 3 ---
arch/arm64/include/asm/memory.h | 2 +-
arch/arm64/include/asm/page.h | 1 +
arch/arm64/kvm/mmu.c | 2 +-
arch/arm64/mm/init.c | 15 +++++++++++++--
arch/arm64/mm/ioremap.c | 4 ++--
arch/arm64/mm/mmu.c | 2 +-
include/linux/memblock.h | 4 +++-
include/linux/mmzone.h | 11 +++++++++++
mm/memblock.c | 28 ++++++++++++++++++++++++++--
10 files changed, 59 insertions(+), 13 deletions(-)
--
2.28.0
WARNING: multiple messages have this Message-ID (diff)
From: Mike Rapoport <rppt@kernel.org>
To: linux-arm-kernel@lists.infradead.org
Cc: David Hildenbrand <david@redhat.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Anshuman Khandual <anshuman.khandual@arm.com>,
linux-kernel@vger.kernel.org, Mike Rapoport <rppt@linux.ibm.com>,
linux-mm@kvack.org, kvmarm@lists.cs.columbia.edu,
Marc Zyngier <maz@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Will Deacon <will@kernel.org>, Mike Rapoport <rppt@kernel.org>
Subject: [PATCH v2 0/4] arm64: drop pfn_valid_within() and simplify pfn_valid()
Date: Wed, 21 Apr 2021 09:51:04 +0300 [thread overview]
Message-ID: <20210421065108.1987-1-rppt@kernel.org> (raw)
From: Mike Rapoport <rppt@linux.ibm.com>
Hi,
These patches aim to remove CONFIG_HOLES_IN_ZONE and essentially hardwire
pfn_valid_within() to 1.
The idea is to mark NOMAP pages as reserved in the memory map and restore
the intended semantics of pfn_valid() to designate availability of struct
page for a pfn.
With this the core mm will be able to cope with the fact that it cannot use
NOMAP pages and the holes created by NOMAP ranges within MAX_ORDER blocks
will be treated correctly even without the need for pfn_valid_within.
The patches are only boot tested on qemu-system-aarch64 so I'd really
appreciate memory stress tests on real hardware.
If this actually works we'll be one step closer to drop custom pfn_valid()
on arm64 altogether.
v2:
* Add check for PFN overflow in pfn_is_map_memory()
* Add Acked-by and Reviewed-by tags, thanks David.
v1: Link: https://lore.kernel.org/lkml/20210420090925.7457-1-rppt@kernel.org
* Add comment about the semantics of pfn_valid() as Anshuman suggested
* Extend comments about MEMBLOCK_NOMAP, per Anshuman
* Use pfn_is_map_memory() name for the exported wrapper for
memblock_is_map_memory(). It is still local to arch/arm64 in the end
because of header dependency issues.
rfc: Link: https://lore.kernel.org/lkml/20210407172607.8812-1-rppt@kernel.org
Mike Rapoport (4):
include/linux/mmzone.h: add documentation for pfn_valid()
memblock: update initialization of reserved pages
arm64: decouple check whether pfn is in linear map from pfn_valid()
arm64: drop pfn_valid_within() and simplify pfn_valid()
arch/arm64/Kconfig | 3 ---
arch/arm64/include/asm/memory.h | 2 +-
arch/arm64/include/asm/page.h | 1 +
arch/arm64/kvm/mmu.c | 2 +-
arch/arm64/mm/init.c | 10 ++++++++--
arch/arm64/mm/ioremap.c | 4 ++--
arch/arm64/mm/mmu.c | 2 +-
include/linux/memblock.h | 4 +++-
include/linux/mmzone.h | 11 +++++++++++
mm/memblock.c | 28 ++++++++++++++++++++++++++--
10 files changed, 54 insertions(+), 13 deletions(-)
base-commit: e49d033bddf5b565044e2abe4241353959bc9120
--
2.28.0
*** BLURB HERE ***
Mike Rapoport (4):
include/linux/mmzone.h: add documentation for pfn_valid()
memblock: update initialization of reserved pages
arm64: decouple check whether pfn is in linear map from pfn_valid()
arm64: drop pfn_valid_within() and simplify pfn_valid()
arch/arm64/Kconfig | 3 ---
arch/arm64/include/asm/memory.h | 2 +-
arch/arm64/include/asm/page.h | 1 +
arch/arm64/kvm/mmu.c | 2 +-
arch/arm64/mm/init.c | 15 +++++++++++++--
arch/arm64/mm/ioremap.c | 4 ++--
arch/arm64/mm/mmu.c | 2 +-
include/linux/memblock.h | 4 +++-
include/linux/mmzone.h | 11 +++++++++++
mm/memblock.c | 28 ++++++++++++++++++++++++++--
10 files changed, 59 insertions(+), 13 deletions(-)
--
2.28.0
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Mike Rapoport <rppt@kernel.org>
To: linux-arm-kernel@lists.infradead.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Ard Biesheuvel <ardb@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
David Hildenbrand <david@redhat.com>,
Marc Zyngier <maz@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Mike Rapoport <rppt@kernel.org>,
Mike Rapoport <rppt@linux.ibm.com>, Will Deacon <will@kernel.org>,
kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Subject: [PATCH v2 0/4] arm64: drop pfn_valid_within() and simplify pfn_valid()
Date: Wed, 21 Apr 2021 09:51:04 +0300 [thread overview]
Message-ID: <20210421065108.1987-1-rppt@kernel.org> (raw)
From: Mike Rapoport <rppt@linux.ibm.com>
Hi,
These patches aim to remove CONFIG_HOLES_IN_ZONE and essentially hardwire
pfn_valid_within() to 1.
The idea is to mark NOMAP pages as reserved in the memory map and restore
the intended semantics of pfn_valid() to designate availability of struct
page for a pfn.
With this the core mm will be able to cope with the fact that it cannot use
NOMAP pages and the holes created by NOMAP ranges within MAX_ORDER blocks
will be treated correctly even without the need for pfn_valid_within.
The patches are only boot tested on qemu-system-aarch64 so I'd really
appreciate memory stress tests on real hardware.
If this actually works we'll be one step closer to drop custom pfn_valid()
on arm64 altogether.
v2:
* Add check for PFN overflow in pfn_is_map_memory()
* Add Acked-by and Reviewed-by tags, thanks David.
v1: Link: https://lore.kernel.org/lkml/20210420090925.7457-1-rppt@kernel.org
* Add comment about the semantics of pfn_valid() as Anshuman suggested
* Extend comments about MEMBLOCK_NOMAP, per Anshuman
* Use pfn_is_map_memory() name for the exported wrapper for
memblock_is_map_memory(). It is still local to arch/arm64 in the end
because of header dependency issues.
rfc: Link: https://lore.kernel.org/lkml/20210407172607.8812-1-rppt@kernel.org
Mike Rapoport (4):
include/linux/mmzone.h: add documentation for pfn_valid()
memblock: update initialization of reserved pages
arm64: decouple check whether pfn is in linear map from pfn_valid()
arm64: drop pfn_valid_within() and simplify pfn_valid()
arch/arm64/Kconfig | 3 ---
arch/arm64/include/asm/memory.h | 2 +-
arch/arm64/include/asm/page.h | 1 +
arch/arm64/kvm/mmu.c | 2 +-
arch/arm64/mm/init.c | 10 ++++++++--
arch/arm64/mm/ioremap.c | 4 ++--
arch/arm64/mm/mmu.c | 2 +-
include/linux/memblock.h | 4 +++-
include/linux/mmzone.h | 11 +++++++++++
mm/memblock.c | 28 ++++++++++++++++++++++++++--
10 files changed, 54 insertions(+), 13 deletions(-)
base-commit: e49d033bddf5b565044e2abe4241353959bc9120
--
2.28.0
*** BLURB HERE ***
Mike Rapoport (4):
include/linux/mmzone.h: add documentation for pfn_valid()
memblock: update initialization of reserved pages
arm64: decouple check whether pfn is in linear map from pfn_valid()
arm64: drop pfn_valid_within() and simplify pfn_valid()
arch/arm64/Kconfig | 3 ---
arch/arm64/include/asm/memory.h | 2 +-
arch/arm64/include/asm/page.h | 1 +
arch/arm64/kvm/mmu.c | 2 +-
arch/arm64/mm/init.c | 15 +++++++++++++--
arch/arm64/mm/ioremap.c | 4 ++--
arch/arm64/mm/mmu.c | 2 +-
include/linux/memblock.h | 4 +++-
include/linux/mmzone.h | 11 +++++++++++
mm/memblock.c | 28 ++++++++++++++++++++++++++--
10 files changed, 59 insertions(+), 13 deletions(-)
--
2.28.0
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-04-21 6:51 UTC|newest]
Thread overview: 143+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-21 6:51 Mike Rapoport [this message]
2021-04-21 6:51 ` [PATCH v2 0/4] arm64: drop pfn_valid_within() and simplify pfn_valid() Mike Rapoport
2021-04-21 6:51 ` Mike Rapoport
2021-04-21 6:51 ` [PATCH v2 1/4] include/linux/mmzone.h: add documentation for pfn_valid() Mike Rapoport
2021-04-21 6:51 ` Mike Rapoport
2021-04-21 6:51 ` Mike Rapoport
2021-04-21 10:49 ` Anshuman Khandual
2021-04-21 10:49 ` Anshuman Khandual
2021-04-21 10:49 ` Anshuman Khandual
2021-04-21 6:51 ` [PATCH v2 2/4] memblock: update initialization of reserved pages Mike Rapoport
2021-04-21 6:51 ` Mike Rapoport
2021-04-21 6:51 ` Mike Rapoport
2021-04-21 7:49 ` David Hildenbrand
2021-04-21 7:49 ` David Hildenbrand
2021-04-21 7:49 ` David Hildenbrand
2021-04-21 10:51 ` Anshuman Khandual
2021-04-21 10:51 ` Anshuman Khandual
2021-04-21 10:51 ` Anshuman Khandual
2021-04-21 6:51 ` [PATCH v2 3/4] arm64: decouple check whether pfn is in linear map from pfn_valid() Mike Rapoport
2021-04-21 6:51 ` Mike Rapoport
2021-04-21 6:51 ` Mike Rapoport
2021-04-21 10:59 ` Anshuman Khandual
2021-04-21 10:59 ` Anshuman Khandual
2021-04-21 10:59 ` Anshuman Khandual
2021-04-21 12:19 ` Mike Rapoport
2021-04-21 12:19 ` Mike Rapoport
2021-04-21 12:19 ` Mike Rapoport
2021-04-21 13:13 ` Anshuman Khandual
2021-04-21 13:13 ` Anshuman Khandual
2021-04-21 13:13 ` Anshuman Khandual
2021-04-21 6:51 ` [PATCH v2 4/4] arm64: drop pfn_valid_within() and simplify pfn_valid() Mike Rapoport
2021-04-21 6:51 ` Mike Rapoport
2021-04-21 6:51 ` Mike Rapoport
2021-04-21 7:49 ` David Hildenbrand
2021-04-21 7:49 ` David Hildenbrand
2021-04-21 7:49 ` David Hildenbrand
2021-04-21 11:06 ` Anshuman Khandual
2021-04-21 11:06 ` Anshuman Khandual
2021-04-21 11:06 ` Anshuman Khandual
2021-04-21 12:24 ` Mike Rapoport
2021-04-21 12:24 ` Mike Rapoport
2021-04-21 12:24 ` Mike Rapoport
2021-04-21 13:15 ` Anshuman Khandual
2021-04-21 13:15 ` Anshuman Khandual
2021-04-21 13:15 ` Anshuman Khandual
2021-04-22 7:00 ` [PATCH v2 0/4] " Kefeng Wang
2021-04-22 7:00 ` Kefeng Wang
2021-04-22 7:00 ` Kefeng Wang
2021-04-22 7:29 ` Mike Rapoport
2021-04-22 7:29 ` Mike Rapoport
2021-04-22 7:29 ` Mike Rapoport
2021-04-22 15:28 ` Kefeng Wang
2021-04-22 15:28 ` Kefeng Wang
2021-04-22 15:28 ` Kefeng Wang
2021-04-23 8:11 ` Kefeng Wang
2021-04-23 8:11 ` Kefeng Wang
2021-04-23 8:11 ` Kefeng Wang
2021-04-25 7:19 ` arm32: panic in move_freepages (Was [PATCH v2 0/4] arm64: drop pfn_valid_within() and simplify pfn_valid()) Mike Rapoport
2021-04-25 7:19 ` Mike Rapoport
2021-04-25 7:19 ` Mike Rapoport
2021-04-25 7:51 ` Kefeng Wang
2021-04-25 7:51 ` Kefeng Wang
2021-04-26 5:20 ` Mike Rapoport
2021-04-26 5:20 ` Mike Rapoport
2021-04-26 5:20 ` Mike Rapoport
2021-04-26 15:26 ` Kefeng Wang
2021-04-26 15:26 ` Kefeng Wang
2021-04-26 15:26 ` Kefeng Wang
2021-04-27 6:23 ` Mike Rapoport
2021-04-27 6:23 ` Mike Rapoport
2021-04-27 6:23 ` Mike Rapoport
2021-04-27 11:08 ` Kefeng Wang
2021-04-27 11:08 ` Kefeng Wang
2021-04-27 11:08 ` Kefeng Wang
2021-04-28 5:59 ` Mike Rapoport
2021-04-28 5:59 ` Mike Rapoport
2021-04-28 5:59 ` Mike Rapoport
2021-04-29 0:48 ` Kefeng Wang
2021-04-29 0:48 ` Kefeng Wang
2021-04-29 0:48 ` Kefeng Wang
2021-04-29 6:57 ` Mike Rapoport
2021-04-29 6:57 ` Mike Rapoport
2021-04-29 6:57 ` Mike Rapoport
2021-04-29 10:22 ` Kefeng Wang
2021-04-29 10:22 ` Kefeng Wang
2021-04-29 10:22 ` Kefeng Wang
2021-04-30 9:51 ` Mike Rapoport
2021-04-30 9:51 ` Mike Rapoport
2021-04-30 9:51 ` Mike Rapoport
2021-04-30 11:24 ` Kefeng Wang
2021-04-30 11:24 ` Kefeng Wang
2021-04-30 11:24 ` Kefeng Wang
2021-05-03 6:26 ` Mike Rapoport
2021-05-03 6:26 ` Mike Rapoport
2021-05-03 6:26 ` Mike Rapoport
2021-05-03 8:07 ` David Hildenbrand
2021-05-03 8:07 ` David Hildenbrand
2021-05-03 8:07 ` David Hildenbrand
2021-05-03 8:44 ` Mike Rapoport
2021-05-03 8:44 ` Mike Rapoport
2021-05-03 8:44 ` Mike Rapoport
2021-05-06 12:47 ` Kefeng Wang
2021-05-06 12:47 ` Kefeng Wang
2021-05-06 12:47 ` Kefeng Wang
2021-05-07 7:17 ` Kefeng Wang
2021-05-07 7:17 ` Kefeng Wang
2021-05-07 7:17 ` Kefeng Wang
2021-05-07 10:30 ` Mike Rapoport
2021-05-07 10:30 ` Mike Rapoport
2021-05-07 10:30 ` Mike Rapoport
2021-05-07 12:34 ` Kefeng Wang
2021-05-07 12:34 ` Kefeng Wang
2021-05-07 12:34 ` Kefeng Wang
2021-05-09 5:59 ` Mike Rapoport
2021-05-09 5:59 ` Mike Rapoport
2021-05-09 5:59 ` Mike Rapoport
2021-05-10 3:10 ` Kefeng Wang
2021-05-10 3:10 ` Kefeng Wang
2021-05-10 3:10 ` Kefeng Wang
2021-05-11 8:48 ` Mike Rapoport
2021-05-11 8:48 ` Mike Rapoport
2021-05-11 8:48 ` Mike Rapoport
2021-05-12 3:08 ` Kefeng Wang
2021-05-12 3:08 ` Kefeng Wang
2021-05-12 3:08 ` Kefeng Wang
2021-05-12 8:26 ` Mike Rapoport
2021-05-12 8:26 ` Mike Rapoport
2021-05-12 8:26 ` Mike Rapoport
2021-05-13 3:44 ` Kefeng Wang
2021-05-13 3:44 ` Kefeng Wang
2021-05-13 3:44 ` Kefeng Wang
2021-05-13 10:55 ` Mike Rapoport
2021-05-13 10:55 ` Mike Rapoport
2021-05-13 10:55 ` Mike Rapoport
2021-05-14 2:18 ` Kefeng Wang
2021-05-14 2:18 ` Kefeng Wang
2021-05-14 2:18 ` Kefeng Wang
2021-05-12 3:50 ` Matthew Wilcox
2021-05-12 3:50 ` Matthew Wilcox
2021-05-12 3:50 ` Matthew Wilcox
2021-04-25 6:59 ` [PATCH v2 0/4] arm64: drop pfn_valid_within() and simplify pfn_valid() Mike Rapoport
2021-04-25 6:59 ` Mike Rapoport
2021-04-25 6:59 ` Mike Rapoport
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210421065108.1987-1-rppt@kernel.org \
--to=rppt@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=anshuman.khandual@arm.com \
--cc=ardb@kernel.org \
--cc=catalin.marinas@arm.com \
--cc=david@redhat.com \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mark.rutland@arm.com \
--cc=maz@kernel.org \
--cc=rppt@linux.ibm.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.