linux-hardening - Re: [PATCH V2] ACPI: APEI: Use ERST timeout for slow devices

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Message-ID: <CAJZ5v0g2TsBo4hxsJBo5a-ggD2Cj65VS=tokpoRaNwzWbPoeNw@mail.gmail.com>
Date: Tue, 24 Oct 2023 16:32:48 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Jeshua Smith <jeshuas@...dia.com>, "Luck, Tony" <tony.luck@...el.com>, 
	"james.morse@....com" <james.morse@....com>, "bp@...en8.de" <bp@...en8.de>
Cc: "keescook@...omium.org" <keescook@...omium.org>, "gpiccoli@...lia.com" <gpiccoli@...lia.com>, 
	"rafael@...nel.org" <rafael@...nel.org>, "lenb@...nel.org" <lenb@...nel.org>, 
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>, 
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, 
	"linux-hardening@...r.kernel.org" <linux-hardening@...r.kernel.org>, 
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>, Thierry Reding <treding@...dia.com>, 
	Jonathan Hunter <jonathanh@...dia.com>
Subject: Re: [PATCH V2] ACPI: APEI: Use ERST timeout for slow devices

On Mon, Oct 23, 2023 at 5:45 PM Jeshua Smith <jeshuas@...dia.com> wrote:
>
> Can we get this merged please, or at least instructions for what needs to happen to get it merged?

So there are 3 designated reviewers for APEI: Tony Luck, Borislav
Petkov and James Morse.  I need an ACK or Reviewed-by from one of
them, so I can proceed with an APEI patch.

Thanks!

> -----Original Message-----
> From: Jeshua Smith
> Sent: Monday, October 2, 2023 10:10 AM
> To: Luck, Tony <tony.luck@...el.com>; keescook@...omium.org; gpiccoli@...lia.com; rafael@...nel.org; lenb@...nel.org; james.morse@....com; bp@...en8.de
> Cc: linux-acpi@...r.kernel.org; linux-kernel@...r.kernel.org; linux-hardening@...r.kernel.org; linux-tegra@...r.kernel.org; Thierry Reding <treding@...dia.com>; Jonathan Hunter <jonathanh@...dia.com>
> Subject: RE: [PATCH V2] ACPI: APEI: Use ERST timeout for slow devices
>
> Resending due to lack of responses.
>
> -----Original Message-----
> From: Jeshua Smith
> Sent: Monday, September 11, 2023 10:16 AM
> To: Luck, Tony <tony.luck@...el.com>; keescook@...omium.org; gpiccoli@...lia.com; rafael@...nel.org; lenb@...nel.org; james.morse@....com; bp@...en8.de
> Cc: linux-acpi@...r.kernel.org; linux-kernel@...r.kernel.org; linux-hardening@...r.kernel.org; linux-tegra@...r.kernel.org; Thierry Reding <treding@...dia.com>; Jonathan Hunter <jonathanh@...dia.com>
> Subject: RE: [PATCH V2] ACPI: APEI: Use ERST timeout for slow devices
>
> Any further questions? Anything else holding up this patch?
>
> -----Original Message-----
> From: Jeshua Smith <jeshuas@...dia.com>
> Sent: Friday, August 4, 2023 7:05 PM
> To: Luck, Tony <tony.luck@...el.com>; keescook@...omium.org; gpiccoli@...lia.com; rafael@...nel.org; lenb@...nel.org; james.morse@....com; bp@...en8.de
> Cc: linux-acpi@...r.kernel.org; linux-kernel@...r.kernel.org; linux-hardening@...r.kernel.org; linux-tegra@...r.kernel.org; Thierry Reding <treding@...dia.com>; Jonathan Hunter <jonathanh@...dia.com>
> Subject: RE: [PATCH V2] ACPI: APEI: Use ERST timeout for slow devices
>
> Thanks for the reply.
>
> It's not very easy to see. It's just a bit down from the link you sent. It's the last possible action in the Serialization Actions table:
> https://uefi.org/specs/ACPI/6.5/18_Platform_Error_Interfaces.html#serialization-actions
>
> 18.5.1.1. Serialization Actions
>
> GET_EXECUTE-_OPERATION_TIMINGS
>
> Returns an encoded QWORD:
> [63:32] value in microseconds that the platform expects would be the maximum amount of time it will take to process and complete an EXECUTE_OPERATION.
> [31:0] value in microseconds that the platform expects would be the nominal amount of time it will take to process and complete an EXECUTE_OPERATION.
>
> -----Original Message-----
> From: Luck, Tony <tony.luck@...el.com>
> Sent: Friday, August 4, 2023 10:31 AM
> To: Jeshua Smith <jeshuas@...dia.com>; keescook@...omium.org; gpiccoli@...lia.com; rafael@...nel.org; lenb@...nel.org; james.morse@....com; bp@...en8.de
> Cc: linux-acpi@...r.kernel.org; linux-kernel@...r.kernel.org; linux-hardening@...r.kernel.org; linux-tegra@...r.kernel.org; Thierry Reding <treding@...dia.com>; Jonathan Hunter <jonathanh@...dia.com>
> Subject: RE: [PATCH V2] ACPI: APEI: Use ERST timeout for slow devices
>
> External email: Use caution opening links or attachments
>
>
> > Can the maintainers please respond to my patch?
>
> Can you give a reference to the ACPI spec where this timing information is documented? I'm looking at ACPI 6.5 and don't see anything about this.
>
> https://uefi.org/specs/ACPI/6.5/18_Platform_Error_Interfaces.html#error-serialization
>
> -Tony