linux-kernel - Re: [PATCH 0/5] ACPI: Add _OST support for ACPI hotplug

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 13 Apr 2012 22:24:29 +0800
From:	Jiang Liu <liuj97@...il.com>
To:	shuahkhan@...il.com
CC:	Toshi Kani <toshi.kani@...com>, lenb@...nel.org,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] ACPI: Add _OST support for ACPI hotplug

Hi Shuah and Toshi,
	As I can tell, _OST method has been defined in ACPI4.0 spec and
there are some platforms already implemented the _OST method. For example,
Quanta QSSC-S4R server implements _OST for hot-pluggable PCI slots, but 
it's a little pity that it doesn't implement _OST for the memory board,
so we can't test Toshi's patch on that platform.
	According to my understanding, other than notifying BIOS about the
event processing result, _OST could also be used to notify BIOS about the
IN_PROGRESS state, so BIOS could track the event handling progress and avoid
timeout. We have used _OST method to avoid timeout on one of our prototype
platforms.

On 04/12/2012 10:19 PM, Shuah Khan wrote:
> 
>> Hi Shuah,
>>
>> The fake _OST methods print arguments to verify successful execution of
>> the methods.  Since the purpose of _OST is firmware-internal
>> communication, there is no difference in testing on real firmware from
>> the OS perspective.  Overriding DSDT with fake ACPI methods is a
>> well-established and widely used testing method as well.
> 
> Toshi,
> 
> This patch hasn't gone through sufficient new functionality testing as
> the only testing that was done was exercising it with stubbed out
> firmware calls. I am not clear on how much regression testing this patch
> has undergone. Sorry, it doesn't give me the warm and fuzzies.
> 
> -- Shuah
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/