From: zhengqiang10@huawei.com (Zhengqiang)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC/RFT PATCH 0/6] Switch GHES ioremap_page_range() to use fixmap
Date: Thu, 9 Nov 2017 20:22:53 +0800 [thread overview]
Message-ID: <5A04489D.2040201@huawei.com> (raw)
In-Reply-To: <20171031153832.17746-1-james.morse@arm.com>
On 2017/10/31 23:38, James Morse wrote:
> GHES is doing ioremap_page_range() in both NMI and irq context, neither
> are safe as it may sleep to allocate intermediate levels of page table.
>
> Replace the NMI/irq GHES_IOREMAP_PAGES to use a fixmap entry each.
>
> After this nothing uses ghes_ioremap_area or arch_apei_flush_tlb_one(),
> rip them out.
>
> RFC as I've only build-tested this on x86. For arm64 I've tested it on a
> software model. Any more testing would be welcome. These patches are based
> on rc7.
>
Tested-by: Qiang Zheng <zhengqiang10@huawei.com>
Verified on our arm64, it work for me. Thanks.
Qiang
prev parent reply other threads:[~2017-11-09 12:22 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-31 15:38 [RFC/RFT PATCH 0/6] Switch GHES ioremap_page_range() to use fixmap James Morse
2017-10-31 15:38 ` [RFC/RFT PATCH 1/6] arm64: fixmap: Add GHES fixmap entries James Morse
2017-10-31 15:38 ` [RFC/RFT PATCH 2/6] x86/mm/fixmap: " James Morse
2017-10-31 19:04 ` Ingo Molnar
2017-10-31 19:09 ` Borislav Petkov
2017-10-31 15:38 ` [RFC/RFT PATCH 3/6] ACPI / APEI: Replace ioremap_page_range() with fixmap James Morse
2017-11-01 4:13 ` gengdongjiu
2017-11-01 14:57 ` James Morse
2017-11-02 12:01 ` gengdongjiu
2017-11-06 18:41 ` James Morse
2017-11-01 13:34 ` Borislav Petkov
2017-10-31 15:38 ` [RFC/RFT PATCH 4/6] ACPI / APEI: Remove ghes_ioremap_area James Morse
2017-11-01 13:47 ` Borislav Petkov
2017-10-31 15:38 ` [RFC/RFT PATCH 5/6] arm64: mm: Remove arch_apei_flush_tlb_one() James Morse
2017-10-31 15:38 ` [RFC/RFT PATCH 6/6] ACPI / APEI: " James Morse
2017-11-01 13:50 ` Borislav Petkov
2017-10-31 15:52 ` [RFC/RFT PATCH 0/6] Switch GHES ioremap_page_range() to use fixmap Linus Torvalds
2017-10-31 16:05 ` Linus Torvalds
2017-11-01 14:58 ` James Morse
2017-10-31 18:46 ` Tyler Baicar
2017-11-01 14:58 ` James Morse
2017-11-01 15:30 ` Borislav Petkov
2017-11-01 18:20 ` Kani, Toshimitsu
2017-11-06 18:43 ` James Morse
2017-11-02 10:19 ` Will Deacon
2017-11-09 12:22 ` Zhengqiang [this message]
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