linux-kernel - Re: [PATCH 2/8] ACPI, CPER: Update cper info

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Message-ID: <52611637.3080505@linux.vnet.ibm.com>
Date:	Fri, 18 Oct 2013 16:36:31 +0530
From:	"Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
To:	tony.luck@...el.com, bp@...en8.de, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org, Chen Gong <gong.chen@...ux.intel.com>
Subject: Re: [PATCH 2/8] ACPI, CPER: Update cper info

Gong,
This mail seems to have missed copying you given the header issues.

Thanks,
Naveen

On 10/17/2013 05:51 PM, Naveen N. Rao wrote:
> On 10/16/2013 07:09 AM, Chen Gong wrote:
>> On Tue, Oct 15, 2013 at 11:47:23PM +0530, Naveen N. Rao wrote:
>>> Date: Tue, 15 Oct 2013 23:47:23 +0530
>>> From: "Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>
>>> To: "Chen, Gong" <gong.chen@...ux.intel.com>
>>> Cc: tony.luck@...el.com, bp@...en8.de, linux-kernel@...r.kernel.org,
>>>   linux-acpi@...r.kernel.org
>>> Subject: Re: [PATCH 2/8] ACPI, CPER: Update cper info
>>> User-Agent: Mutt/1.5.21 (2010-09-15)
>>>
>>> On 2013/10/11 02:32AM, Chen Gong wrote:
>>>> To satisfy the necessary of following patches and make related
>>>> definition
>>>> more clear, update some definitions about CPER. No functional changes.
>>>>
>>>> Signed-off-by: Chen, Gong <gong.chen@...ux.intel.com>
>>>> ---
>>>>   drivers/acpi/apei/apei-internal.h | 12 ++++-----
>>>>   drivers/acpi/apei/cper.c          | 46
>>>> ++++++++++++++++-----------------
>>>>   drivers/acpi/apei/ghes.c          | 54
>>>> +++++++++++++++++++--------------------
>>>>   include/acpi/actbl1.h             | 14 +++++-----
>>>>   include/acpi/ghes.h               |  2 +-
>>>>   5 files changed, 64 insertions(+), 64 deletions(-)
>>>>
>>>> diff --git a/drivers/acpi/apei/apei-internal.h
>>>> b/drivers/acpi/apei/apei-internal.h
>>>> index f220d64..21ba34a 100644
>>>> --- a/drivers/acpi/apei/apei-internal.h
>>>> +++ b/drivers/acpi/apei/apei-internal.h
>>>> @@ -122,11 +122,11 @@ struct dentry;
>>>>   struct dentry *apei_get_debugfs_dir(void);
>>>>
>>>>   #define apei_estatus_for_each_section(estatus, section)            \
>>>> -    for (section = (struct acpi_hest_generic_data *)(estatus +
>>>> 1);    \
>>>> +    for (section = (struct acpi_generic_data *)(estatus + 1);    \
>>>
>>> This is a good one to rename, though I wonder if acpi_generic_error_data
>>> is more appropriate?
>>>
>>>>            (void *)section - (void *)estatus <
>>>> estatus->data_length;    \
>>>>            section = (void *)(section+1) + section->error_data_length)
>>>>
>>>> -static inline u32 apei_estatus_len(struct acpi_hest_generic_status
>>>> *estatus)
>>>> +static inline u32 cper_estatus_len(struct acpi_generic_status
>>>> *estatus)
>>>
>>> Not sure I understand the rationale for these changes - we are still
>>> dealing with ACPI/APEI generic error status/data structures. So, why
>>> the cper_ prefix?
>>>
>>
>> Because CPER is not APEI specific, beside APEI, some others like eMCA
>> needs this.
>
> Right, but even the document you point to refers to these structures as
> what they are: ACPI Generic error status/data. Clearly, CPER is an
> incorrect prefix here since CPER/UEFI does *not* seem to have the same
> structure format.
>
>
> Regards,
> Naveen

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