From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: Mark Rutland <mark.rutland@arm.com>,
gshan@redhat.com, Anshuman Khandual <anshuman.khandual@arm.com>,
catalin.marinas@arm.com, Steve Capper <steve.capper@arm.com>,
linux-kernel@vger.kernel.org, Mark Brown <broonie@kernel.org>,
Marc Zyngier <maz@kernel.org>,
will@kernel.org
Subject: [PATCH V4 0/3] arm64/mm/hotplug: Improve memory offline event notifier
Date: Tue, 29 Sep 2020 19:24:44 +0530 [thread overview]
Message-ID: <1601387687-6077-1-git-send-email-anshuman.khandual@arm.com> (raw)
This series brings three different changes to the only memory event notifier on
arm64 platform. These changes improve it's robustness while also enhancing debug
capabilities during potential memory offlining error conditions.
This applies on 5.9-rc7
Changes in V4:
- Dropped additional return in prevent_bootmem_remove_init() per Gavin
- Rearranged memory section loop in prevent_bootmem_remove_notifier() per Gavin
- Call out boot memory ranges for attempted offline or offline events
Changes in V3: (https://patchwork.kernel.org/project/linux-arm-kernel/list/?series=352717)
- Split the single patch into three patch series per Catalin
- Trigger changed from setup_arch() to early_initcall() per Catalin
- Renamed back memory_hotremove_notifier() as prevent_bootmem_remove_init()
- validate_bootmem_online() is now called from prevent_bootmem_remove_init() per Catalin
- Skip registering the notifier if validate_bootmem_online() returns negative
Changes in V2: (https://patchwork.kernel.org/patch/11732161/)
- Dropped all generic changes wrt MEM_CANCEL_OFFLINE reasons enumeration
- Dropped all related (processing MEM_CANCEL_OFFLINE reasons) changes on arm64
- Added validate_boot_mem_online_state() that gets called with early_initcall()
- Added CONFIG_MEMORY_HOTREMOVE check before registering memory notifier
- Moved notifier registration i.e memory_hotremove_notifier into setup_arch()
Changes in V1: (https://patchwork.kernel.org/project/linux-mm/list/?series=271237)
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Steve Capper <steve.capper@arm.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Gavin Shan <gshan@redhat.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Anshuman Khandual (3):
arm64/mm/hotplug: Register boot memory hot remove notifier earlier
arm64/mm/hotplug: Enable MEM_OFFLINE event handling
arm64/mm/hotplug: Ensure early memory sections are all online
arch/arm64/mm/mmu.c | 101 ++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 97 insertions(+), 4 deletions(-)
--
2.20.1
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next reply other threads:[~2020-09-29 13:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-29 13:54 Anshuman Khandual [this message]
2020-09-29 13:54 ` [PATCH V4 1/3] arm64/mm/hotplug: Register boot memory hot remove notifier earlier Anshuman Khandual
2020-10-01 13:51 ` Catalin Marinas
2020-09-29 13:54 ` [PATCH V4 2/3] arm64/mm/hotplug: Enable MEM_OFFLINE event handling Anshuman Khandual
2020-09-30 23:57 ` Gavin Shan
2020-10-06 2:59 ` Anshuman Khandual
2020-10-12 3:27 ` Gavin Shan
2020-09-29 13:54 ` [PATCH V4 3/3] arm64/mm/hotplug: Ensure early memory sections are all online Anshuman Khandual
2020-10-01 0:53 ` Gavin Shan
2020-10-06 3:11 ` Anshuman Khandual
2020-10-12 4:07 ` Gavin Shan
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