From: "Joseph, Jithu" <jithu.joseph@intel.com>
To: Sohil Mehta <sohil.mehta@intel.com>, <hdegoede@redhat.com>,
<markgross@kernel.org>
Cc: <tglx@linutronix.de>, <mingo@redhat.com>, <bp@alien8.de>,
<dave.hansen@linux.intel.com>, <x86@kernel.org>, <hpa@zytor.com>,
<gregkh@linuxfoundation.org>, <ashok.raj@intel.com>,
<tony.luck@intel.com>, <linux-kernel@vger.kernel.org>,
<platform-driver-x86@vger.kernel.org>, <patches@lists.linux.dev>,
<ravi.v.shankar@intel.com>, <thiago.macieira@intel.com>,
<athenas.jimenez.gonzalez@intel.com>
Subject: Re: [PATCH 12/14] platform/x86/intel/ifs: Add current_batch sysfs entry
Date: Tue, 1 Nov 2022 16:27:12 -0700 [thread overview]
Message-ID: <5edd67d3-e16e-5696-57b4-a9514aa6de63@intel.com> (raw)
In-Reply-To: <9bfd45cb-ab5c-1d46-1e16-03417c89298b@intel.com>
On 11/1/2022 3:26 PM, Sohil Mehta wrote:
> On 10/21/2022 1:34 PM, Jithu Joseph wrote:
>> Initial implementation assumed a single IFS test image file with a
>> fixed name ff-mm-ss.scan. (where ff, mm, ss refers to family, model
>> and stepping of the core)
>>
>> Subsequently, it became evident that supporting more than one
>> test image file is needed to provide more comprehensive
>> test coverage. (Test coverage in this scenario refers to testing
>> more transistors in the core to identify faults)
>>
>> The other alternative of increasing the size of a single scan test image
>> file would not work as the upper bound is limited by the size of memory
>> area reserved by BIOS for loading IFS test image.
>>
>> Introduce "current_batch" file which accepts a number. Writing a
>> number to the current_batch file would load the test image file by name
>> ff-mm-ss-<xy>.scan, where <xy> is the number written to the
>> "current_batch" file in hex.
>
> Any specific reasoning why the name "current_batch" was chosen? To me, batch seems to suggest multiple or a group of files. But in reality only one test file is loaded at a time.
There would be a batch of test files (6 in the e.g described in the commit message). At a time you can load one by writing its suffix into "current_batch". So "current_batch" was more like a short form for "current_file_in_the_batch_of_files"
>
> Naming can sometimes be quite subjective so it might be useful to get multiple opinions here.
>
> As per my understanding, there is sysfs file called run_test which runs a loaded test. Instead of current_batch how about the name load_test (or maybe current_test)?
Each file would contain multiple tests. All these tests contained within a file would be executed when you write 1 to "runtest".
Given this load_test too would be confusing (more appropriate than "load_test" would be "load_test_file" or "load_file" or "current_file")
>
> load_test - Write a number less than or equal to 0xff to load an IFS test image. (Description as-is from the documentation patch)
>
>
>> * Running tests
>> * -------------
>> @@ -207,6 +217,7 @@ struct ifs_data {
>> int status;
>> u64 scan_details;
>> int cur_batch;
>> + int test_num;
>> };
>> struct ifs_work {
>> diff --git a/drivers/platform/x86/intel/ifs/core.c b/drivers/platform/x86/intel/ifs/core.c
>> index 5fb7f655c291..1f040837e8eb 100644
>> --- a/drivers/platform/x86/intel/ifs/core.c
>> +++ b/drivers/platform/x86/intel/ifs/core.c
>> @@ -22,6 +22,7 @@ MODULE_DEVICE_TABLE(x86cpu, ifs_cpu_ids);
>> static struct ifs_device ifs_device = {
>> .data = {
>> .integrity_cap_bit = MSR_INTEGRITY_CAPS_PERIODIC_BIST_BIT,
>> + .test_num = 0,
>
> Is this initialization really needed? Wouldn't it default to 0?
>
Not strictly needed when we have a single test
> Maybe if you explain what does test_num refer to it might answer the above?
It is currently used to form the path in ifs_load_firmware() for the test image to be loaded
>
>
>> +static ssize_t current_batch_show(struct device *dev,
>> + struct device_attribute *attr, char *buf)
>> +{
>> + struct ifs_data *ifsd = ifs_get_data(dev);
>> +
>> + if (!ifsd->loaded)
>> + return sysfs_emit(buf, "%s\n", "none");
>
> Why not:
>
> sysfs_emit(buf, "none\n");
Will change
Jithu
next prev parent reply other threads:[~2022-11-01 23:27 UTC|newest]
Thread overview: 193+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-21 20:33 [PATCH 00/14] IFS multi test image support and misc changes Jithu Joseph
2022-10-21 20:34 ` [PATCH 01/14] platform/x86/intel/ifs: Remove unused selection Jithu Joseph
2022-10-21 20:34 ` [PATCH 02/14] platform/x86/intel/ifs: Propagate load failure error code Jithu Joseph
2022-10-24 22:52 ` Sohil Mehta
2022-10-24 23:17 ` Joseph, Jithu
2022-10-21 20:34 ` [PATCH 03/14] platform/x86/intel/ifs: return a more appropriate Error code Jithu Joseph
2022-10-24 22:57 ` Sohil Mehta
2022-10-24 23:01 ` Luck, Tony
2022-10-21 20:34 ` [PATCH 04/14] platform/x86/intel/ifs: Remove image loading during init Jithu Joseph
2022-10-24 23:50 ` Sohil Mehta
2022-10-25 0:41 ` Joseph, Jithu
2022-10-25 6:06 ` Sohil Mehta
2022-10-26 23:53 ` Joseph, Jithu
2022-11-01 7:00 ` Sohil Mehta
2022-10-21 20:34 ` [PATCH 05/14] x86/microcode/intel: Expose find_matching_signature() for IFS Jithu Joseph
2022-11-02 19:03 ` Borislav Petkov
2022-11-02 21:32 ` Joseph, Jithu
2022-10-21 20:34 ` [PATCH 06/14] x86/microcode/intel: Use appropriate type in microcode_sanity_check() Jithu Joseph
2022-10-21 20:34 ` [PATCH 07/14] x86/microcode/intel: Expose microcode_sanity_check() Jithu Joseph
2022-11-01 7:28 ` Sohil Mehta
2022-11-01 19:06 ` Joseph, Jithu
2022-11-03 11:33 ` Borislav Petkov
2022-11-03 19:25 ` Ashok Raj
2022-11-03 23:32 ` Borislav Petkov
2022-11-04 6:15 ` Joseph, Jithu
2022-11-04 10:50 ` Borislav Petkov
2022-11-04 22:02 ` Joseph, Jithu
2022-11-04 22:14 ` Borislav Petkov
2022-10-21 20:34 ` [PATCH 08/14] x86/microcode/intel: Meta-data support in microcode file Jithu Joseph
2022-11-01 8:51 ` Sohil Mehta
2022-11-01 18:05 ` Joseph, Jithu
2022-11-03 11:35 ` Borislav Petkov
2022-10-21 20:34 ` [PATCH 09/14] platform/x86/intel/ifs: Use generic microcode headers and functions Jithu Joseph
2022-11-01 18:37 ` Sohil Mehta
2022-11-01 21:07 ` Joseph, Jithu
2022-10-21 20:34 ` [PATCH 10/14] platform/x86/intel/ifs: Add metadata validation Jithu Joseph
2022-11-01 20:28 ` Sohil Mehta
2022-11-09 23:10 ` Sohil Mehta
2022-10-21 20:34 ` [PATCH 11/14] platform/x86/intel/ifs: Remove reload sysfs entry Jithu Joseph
2022-10-21 20:34 ` [PATCH 12/14] platform/x86/intel/ifs: Add current_batch " Jithu Joseph
2022-11-01 22:26 ` Sohil Mehta
2022-11-01 23:27 ` Joseph, Jithu [this message]
2022-11-03 8:03 ` Sohil Mehta
2022-10-21 20:34 ` [PATCH 13/14] Documentation/ABI: Update IFS ABI doc Jithu Joseph
2022-11-01 22:34 ` Sohil Mehta
2022-11-01 22:48 ` Joseph, Jithu
2022-11-01 22:59 ` Sohil Mehta
2022-11-02 22:10 ` Joseph, Jithu
2022-11-03 7:49 ` Sohil Mehta
2022-10-21 20:34 ` [PATCH 14/14] Revert "platform/x86/intel/ifs: Mark as BROKEN" Jithu Joseph
2022-11-03 8:21 ` [PATCH 00/14] IFS multi test image support and misc changes Sohil Mehta
2022-11-07 9:24 ` Hans de Goede
2022-11-07 23:01 ` Joseph, Jithu
2022-11-07 22:53 ` [PATCH v2 " Jithu Joseph
2022-11-07 22:53 ` [PATCH v2 01/14] platform/x86/intel/ifs: Remove unused selection Jithu Joseph
2022-11-09 1:52 ` Sohil Mehta
2022-11-10 21:03 ` Hans de Goede
2022-11-07 22:53 ` [PATCH v2 02/14] platform/x86/intel/ifs: return a more appropriate Error code Jithu Joseph
2022-11-09 1:57 ` Sohil Mehta
2022-11-10 21:04 ` Hans de Goede
2022-11-07 22:53 ` [PATCH v2 03/14] platform/x86/intel/ifs: Remove image loading during init Jithu Joseph
2022-11-09 1:59 ` Sohil Mehta
2022-11-10 21:06 ` Hans de Goede
2022-11-07 22:53 ` [PATCH v2 04/14] x86/microcode/intel: Expose find_matching_signature() for IFS Jithu Joseph
2022-11-09 2:06 ` Sohil Mehta
2022-11-11 13:44 ` Borislav Petkov
2022-11-07 22:53 ` [PATCH v2 05/14] x86/microcode/intel: Use appropriate type in microcode_sanity_check() Jithu Joseph
2022-11-09 2:47 ` Sohil Mehta
2022-11-11 13:46 ` Borislav Petkov
2022-11-07 22:53 ` [PATCH v2 06/14] x86/microcode/intel: Expose microcode_sanity_check() Jithu Joseph
2022-11-09 3:03 ` Sohil Mehta
2022-11-09 3:29 ` Joseph, Jithu
2022-11-11 14:33 ` Borislav Petkov
2022-11-11 21:39 ` Joseph, Jithu
2022-11-07 22:53 ` [PATCH v2 07/14] x86/microcode/intel: Use a reserved field for metasize Jithu Joseph
2022-11-09 3:06 ` Sohil Mehta
2022-11-11 14:37 ` Borislav Petkov
2022-11-07 22:53 ` [PATCH v2 08/14] platform/x86/intel/ifs: Add metadata support Jithu Joseph
2022-11-09 3:25 ` Sohil Mehta
2022-11-10 21:08 ` Hans de Goede
2022-11-11 16:16 ` Borislav Petkov
2022-11-07 22:53 ` [PATCH v2 09/14] platform/x86/intel/ifs: Use generic microcode headers and functions Jithu Joseph
2022-11-09 3:29 ` Sohil Mehta
2022-11-10 21:11 ` Hans de Goede
2022-11-11 16:23 ` Borislav Petkov
2022-11-11 20:41 ` Joseph, Jithu
2022-11-16 17:26 ` Tony Luck
2022-11-16 18:53 ` Borislav Petkov
2022-11-16 19:02 ` Luck, Tony
2022-11-07 22:53 ` [PATCH v2 10/14] platform/x86/intel/ifs: Add metadata validation Jithu Joseph
2022-11-09 23:15 ` Sohil Mehta
2022-11-10 1:22 ` Joseph, Jithu
2022-11-10 9:40 ` Sohil Mehta
2022-11-10 21:18 ` Hans de Goede
2022-11-11 18:39 ` Borislav Petkov
2022-11-11 18:48 ` Dave Hansen
2022-11-11 20:30 ` Joseph, Jithu
2022-11-11 21:29 ` Ashok Raj
2022-11-07 22:53 ` [PATCH v2 11/14] platform/x86/intel/ifs: Remove reload sysfs entry Jithu Joseph
2022-11-09 23:16 ` Sohil Mehta
2022-11-10 21:19 ` Hans de Goede
2022-11-07 22:53 ` [PATCH v2 12/14] platform/x86/intel/ifs: Add current_batch " Jithu Joseph
2022-11-09 23:46 ` Sohil Mehta
2022-11-10 21:22 ` Hans de Goede
2022-11-12 16:26 ` Borislav Petkov
2022-11-12 18:21 ` Thiago Macieira
2022-11-12 19:20 ` Borislav Petkov
2022-11-12 19:58 ` Ashok Raj
2022-11-13 2:06 ` Thiago Macieira
2022-11-12 18:33 ` Luck, Tony
2022-11-12 19:28 ` Borislav Petkov
2022-11-12 23:32 ` Luck, Tony
2022-11-13 2:35 ` Thiago Macieira
2022-11-13 7:37 ` gregkh
2022-11-13 11:48 ` Borislav Petkov
2022-11-13 15:15 ` Ashok Raj
2022-11-13 15:58 ` Borislav Petkov
2022-11-13 17:01 ` Ashok Raj
2022-11-13 18:41 ` Borislav Petkov
2022-11-13 21:40 ` Thiago Macieira
2022-11-13 22:59 ` Borislav Petkov
2022-11-14 18:13 ` Dave Hansen
2022-11-14 18:25 ` Luck, Tony
2022-11-14 19:03 ` Borislav Petkov
2022-11-14 19:07 ` Luck, Tony
2022-11-14 19:17 ` Borislav Petkov
2022-11-14 19:38 ` Luck, Tony
2022-11-14 19:51 ` Borislav Petkov
2022-11-13 16:41 ` Joseph, Jithu
2022-11-13 16:58 ` Borislav Petkov
2022-11-13 17:55 ` Joseph, Jithu
2022-11-13 18:27 ` Borislav Petkov
2022-11-13 21:33 ` Tony Luck
2022-11-13 22:55 ` Borislav Petkov
2022-11-13 21:21 ` Thiago Macieira
2022-11-13 22:40 ` Borislav Petkov
2022-11-13 21:51 ` Thiago Macieira
2022-11-13 23:05 ` Borislav Petkov
2022-11-14 8:28 ` Hans de Goede
2022-11-14 7:15 ` gregkh
2022-11-14 15:33 ` Tony Luck
2022-11-14 15:47 ` Borislav Petkov
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-07 22:53 ` [PATCH v2 13/14] Documentation/ABI: Update IFS ABI doc Jithu Joseph
2022-11-09 23:55 ` Sohil Mehta
2022-11-10 1:16 ` Joseph, Jithu
2022-11-10 21:33 ` Hans de Goede
2022-11-07 22:53 ` [PATCH v2 14/14] Revert "platform/x86/intel/ifs: Mark as BROKEN" Jithu Joseph
2022-11-09 23:57 ` Sohil Mehta
2022-11-10 21:34 ` Hans de Goede
2022-11-10 9:59 ` [PATCH v2 00/14] IFS multi test image support and misc changes Borislav Petkov
2022-11-10 21:37 ` Hans de Goede
2022-11-10 21:58 ` Joseph, Jithu
2022-11-17 3:59 ` [PATCH v3 00/16] " Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 01/16] platform/x86/intel/ifs: Remove unused selection Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 02/16] platform/x86/intel/ifs: Return a more appropriate Error code Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] platform/x86/intel/ifs: Return a more appropriate error code tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 03/16] platform/x86/intel/ifs: Remove image loading during init Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 04/16] platform/x86/intel/ifs: Remove memory allocation from load path Jithu Joseph
2022-11-17 8:51 ` Hans de Goede
2022-11-17 17:29 ` Jithu Joseph
2022-11-17 18:01 ` Hans de Goede
2022-11-17 19:59 ` Jithu Joseph
2022-11-17 21:13 ` Hans de Goede
2022-11-17 22:44 ` Joseph, Jithu
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 05/16] x86/microcode/intel: Reuse find_matching_signature() Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 06/16] x86/microcode/intel: Use appropriate type in microcode_sanity_check() Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 07/16] x86/microcode/intel: Reuse microcode_sanity_check() Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 08/16] x86/microcode/intel: Add hdr_type to intel_microcode_sanity_check() Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 09/16] x86/microcode/intel: Use a reserved field for metasize Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 10/16] platform/x86/intel/ifs: Add metadata support Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Ashok Raj
2022-11-17 3:59 ` [PATCH v3 11/16] platform/x86/intel/ifs: Use generic microcode headers and functions Jithu Joseph
2022-11-17 22:50 ` Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 12/16] platform/x86/intel/ifs: Add metadata validation Jithu Joseph
2022-11-17 23:04 ` Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 13/16] platform/x86/intel/ifs: Remove reload sysfs entry Jithu Joseph
2022-11-19 16:24 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 14/16] platform/x86/intel/ifs: Add current_batch " Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 15/16] Documentation/ABI: Update IFS ABI doc Jithu Joseph
2022-11-19 16:23 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
2022-11-17 3:59 ` [PATCH v3 16/16] Revert "platform/x86/intel/ifs: Mark as BROKEN" Jithu Joseph
2022-11-19 16:23 ` [tip: x86/microcode] " tip-bot2 for Jithu Joseph
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