From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: [PATCH 2/2] acpi, apei: use appropriate pgprot_t to map GHES memory Date: Thu, 13 Aug 2015 10:19:17 +0200 Message-ID: <20150813081917.GA14610@gmail.com> References: <1439396234-22863-1-git-send-email-matt@codeblueprint.co.uk> <1439396234-22863-3-git-send-email-matt@codeblueprint.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1439396234-22863-3-git-send-email-matt-mF/unelCI9GS6iBeEJttW/XRex20P6io@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Matt Fleming Cc: Thomas Gleixner , "H. Peter Anvin" , "Jonathan (Zhixiong) Zhang" , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Matt Fleming , Borislav Petkov List-Id: linux-efi@vger.kernel.org * Matt Fleming wrote: > From: "Jonathan (Zhixiong) Zhang" > > 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