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

From: Ingo Molnar
Date: Thu Aug 13 2015 - 04:19:29 EST

* Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx> wrote:

> From: "Jonathan (Zhixiong) Zhang" <zjzhang@xxxxxxxxxxxxxx>
> 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.


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