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Re: [PATCH 2/2] acpi, apei: use appropriate pgprot_t to map GHES memory

From Ingo Molnar <mingo@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH 2/2] acpi, apei: use appropriate pgprot_t to map GHES memory
Date 2015-08-13 10:20 +0200
Message-ID <pWVTX-625-11@gated-at.bofh.it> (permalink)
References <pWGUX-15C-5@gated-at.bofh.it> <pWGUX-15C-19@gated-at.bofh.it>
Organization linux.* mail to news gateway

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* Matt Fleming <matt@codeblueprint.co.uk> wrote:

> From: "Jonathan (Zhixiong) Zhang" <zjzhang@codeaurora.org>
> 
> With ACPI APEI firmware first handling, generic hardware error
> record is updated by firmware in GHES memory region. On an arm64
> platform, firmware updates GHES memory region with uncached
> access attribute, and then Linux reads stale data from cache.

So this paragraph does not parse for me ...

If it tries to explain a bug it falls very short of doing a proper job of that.

Thanks,

	Ingo
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Thread

[GIT PULL 0/2] EFI changes for v4.3 (part two) Matt Fleming <matt@codeblueprint.co.uk> - 2015-08-12 18:20 +0200
  [PATCH 2/2] acpi, apei: use appropriate pgprot_t to map GHES memory Matt Fleming <matt@codeblueprint.co.uk> - 2015-08-12 18:20 +0200
    Re: [PATCH 2/2] acpi, apei: use appropriate pgprot_t to map GHES  memory Ingo Molnar <mingo@kernel.org> - 2015-08-13 10:20 +0200
      Re: [PATCH 2/2] acpi, apei: use appropriate pgprot_t to map GHES  memory Matt Fleming <matt@codeblueprint.co.uk> - 2015-08-13 11:30 +0200
        Re: [PATCH 2/2] acpi, apei: use appropriate pgprot_t to map GHES  memory Will Deacon <will.deacon@arm.com> - 2015-08-13 13:20 +0200
          Re: [PATCH 2/2] acpi, apei: use appropriate pgprot_t to map GHES  memory "Zhang, Jonathan Zhixiong" <zjzhang@codeaurora.org> - 2015-08-14 21:10 +0200
  [PATCH 1/2] arm64: apei: implement arch_apei_get_mem_attributes() Matt Fleming <matt@codeblueprint.co.uk> - 2015-08-12 18:20 +0200
    Re: [PATCH 1/2] arm64: apei: implement arch_apei_get_mem_attributes() Ingo Molnar <mingo@kernel.org> - 2015-08-13 10:30 +0200
      Re: [PATCH 1/2] arm64: apei: implement arch_apei_get_mem_attributes() "Zhang, Jonathan Zhixiong" <zjzhang@codeaurora.org> - 2015-08-14 21:00 +0200
        Re: [PATCH 1/2] arm64: apei: implement arch_apei_get_mem_attributes() Matt Fleming <matt@codeblueprint.co.uk> - 2015-08-14 21:20 +0200

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