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From: Nikolaus Voss <nv@vosn.de>
To: "Schmauss, Erik" <erik.schmauss@intel.com>
Cc: "Shevchenko, Andriy" <andriy.shevchenko@intel.com>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Len Brown <lenb@kernel.org>,
	"Moore, Robert" <robert.moore@intel.com>,
	Jacek Anaszewski <jacek.anaszewski@gmail.com>,
	Pavel Machek <pavel@ucw.cz>, Dan Murphy <dmurphy@ti.com>,
	Thierry Reding <thierry.reding@gmail.com>,
	"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
	"devel@acpica.org" <devel@acpica.org>,
	"linux-leds@vger.kernel.org" <linux-leds@vger.kernel.org>,
	"linux-pwm@vger.kernel.org" <linux-pwm@vger.kernel.org>,
	nikolaus.voss@loewensteinmedical.de
Subject: RE: [PATCH 1/3] ACPI: Resolve objects on host-directed table loads
Date: Fri, 16 Aug 2019 13:57:26 +0200 (CEST)
Message-ID: <alpine.DEB.2.20.1908161345590.41303@fox.voss.local> (raw)
In-Reply-To: <CF6A88132359CE47947DB4C6E1709ED53C61A211@ORSMSX122.amr.corp.intel.com>

On Wed, 14 Aug 2019, Schmauss, Erik wrote:
>
>
>> -----Original Message-----
>> From: Shevchenko, Andriy
>> Sent: Wednesday, August 14, 2019 11:51 AM
>> To: Nikolaus Voss <nikolaus.voss@loewensteinmedical.de>
>> Cc: Rafael J. Wysocki <rjw@rjwysocki.net>; Len Brown <lenb@kernel.org>;
>> Moore, Robert <robert.moore@intel.com>; Schmauss, Erik
>> <erik.schmauss@intel.com>; Jacek Anaszewski <jacek.anaszewski@gmail.com>;
>> Pavel Machek <pavel@ucw.cz>; Dan Murphy <dmurphy@ti.com>; Thierry
>> Reding <thierry.reding@gmail.com>; linux-acpi@vger.kernel.org;
>> devel@acpica.org; linux-leds@vger.kernel.org; linux-pwm@vger.kernel.org
>> Subject: Re: [PATCH 1/3] ACPI: Resolve objects on host-directed table loads
>>
>> On Wed, May 29, 2019 at 02:18:20PM +0200, Nikolaus Voss wrote:
>>> If an ACPI SSDT overlay is loaded after built-in tables have been
>>> loaded e.g. via configfs or efivar_ssdt_load() it is necessary to
>>> rewalk the namespace to resolve references. Without this, relative and
>>> absolute paths like ^PCI0.SBUS or \_SB.PCI0.SBUS are not resolved
>>> correctly.
>>>
>>> Make configfs load use the same method as efivar_ssdt_load().
>>
>> This patch brought a regression (bisect log below).
>> Now I'm unable to unload the table which was working before.
>>
>> Reverting (manual, due to ACPICA changes) helps.
>>
>> Please, consider to revert for this cycle, or fix. I will be glad to test any
>> proposed fix.
>
> We submitted a patch (d1fb5b2f623b1af5a0d2a83d205df1b61f430dc6)
> in response to this suggestion and I was not aware that this had been applied.
>
> Rafael, please revert at least the ACPICA portion of this patch.

As I see it, my ACPICA change is not part of 5.3-rc1 any more. Reverting 
my fix is part of the patch above 
(d1fb5b2f623b1af5a0d2a83d205df1b61f430dc6) which is already applied.

Nevertheless, what is new, is that acpi_ns_initialize_objects() is called 
in acpi_load_table(). This is necessary to resolve the references in the 
newly loaded table. Maybe this prevents the table from being unloaded?

Niko

>
> Thanks,
> Erik
>>
>>
>> git bisect start
>> # good: [0ecfebd2b52404ae0c54a878c872bb93363ada36] Linux 5.2 git bisect
>> good 0ecfebd2b52404ae0c54a878c872bb93363ada36
>> # bad: [5f9e832c137075045d15cd6899ab0505cfb2ca4b] Linus 5.3-rc1 git
>> bisect bad 5f9e832c137075045d15cd6899ab0505cfb2ca4b
>> # bad: [e786741ff1b52769b044b7f4407f39cd13ee5d2d] Merge tag 'staging-
>> 5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
>> git bisect bad e786741ff1b52769b044b7f4407f39cd13ee5d2d
>> # bad: [8f6ccf6159aed1f04c6d179f61f6fb2691261e84] Merge tag 'clone3-v5.3'
>> of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
>> git bisect bad 8f6ccf6159aed1f04c6d179f61f6fb2691261e84
>> # good: [ed63b9c873601ca113da5c7b1745e3946493e9f3] Merge tag
>> 'media/v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-
>> media
>> git bisect good ed63b9c873601ca113da5c7b1745e3946493e9f3
>> # bad: [4b4704520d97b74e045154fc3b844b73ae4e7ebd] Merge tag 'acpi-5.3-
>> rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
>> git bisect bad 4b4704520d97b74e045154fc3b844b73ae4e7ebd
>> # good: [e3303268f9cfa4eb7c2217df471417d4327109fd] ASoC: soc-core: don't
>> use soc_find_component() at snd_soc_find_dai() git bisect good
>> e3303268f9cfa4eb7c2217df471417d4327109fd
>> # good: [3c53c6255d598db7084c5c3d7553d7200e857818] Merge tag 'asoc-
>> v5.3' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-
>> linus git bisect good 3c53c6255d598db7084c5c3d7553d7200e857818
>> # good: [4cdd5f9186bbe80306e76f11da7ecb0b9720433c] Merge tag 'sound-
>> 5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
>> git bisect good 4cdd5f9186bbe80306e76f11da7ecb0b9720433c
>> # good: [13b06b78c772d64e2207e4a5a5329856fe2bf241] Merge branches
>> 'pm-opp', 'pm-misc', 'pm-avs' and 'pm-tools'
>> git bisect good 13b06b78c772d64e2207e4a5a5329856fe2bf241
>> # good: [cf2d213e49fdf47e4c10dc629a3659e0026a54b8] Merge tag 'pm-5.3-
>> rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
>> git bisect good cf2d213e49fdf47e4c10dc629a3659e0026a54b8
>> # bad: [02a93f35f57fe5d4d1bac0ac8496884235e2fd2e] ACPICA: Update
>> version to 20190703 git bisect bad
>> 02a93f35f57fe5d4d1bac0ac8496884235e2fd2e
>> # bad: [d4ca763eed3bcc227f220beb11ff4eb2fa548755] Merge ACPI tables
>> handling changes for v5.3.
>> git bisect bad d4ca763eed3bcc227f220beb11ff4eb2fa548755
>> # bad: [d06c47e3dd07fdf3f07e8fc45f2ce655e9b295c5] ACPI: configfs: Resolve
>> objects on host-directed table loads git bisect bad
>> d06c47e3dd07fdf3f07e8fc45f2ce655e9b295c5
>> # good: [c78fea61f0c1f8568fbbb36ac3d1e1c85a903ae4] ACPI: tables: Allow
>> BGRT to be overridden git bisect good
>> c78fea61f0c1f8568fbbb36ac3d1e1c85a903ae4
>> # first bad commit: [d06c47e3dd07fdf3f07e8fc45f2ce655e9b295c5] ACPI:
>> configfs: Resolve objects on host-directed table loads
>>
>> --
>> With Best Regards,
>> Andy Shevchenko
>>
>
>

  reply index

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-29 12:18 [PATCH 0/3] PWM framework: add support referencing PWMs from ACPI Nikolaus Voss
2019-05-29 12:18 ` [PATCH 1/3] ACPI: Resolve objects on host-directed table loads Nikolaus Voss
2019-05-30 14:42   ` Dan Murphy
2019-05-31 12:23     ` Pavel Machek
2019-05-31 12:45       ` Dan Murphy
2019-05-31 12:46     ` Dan Murphy
2019-06-03  9:12       ` Nikolaus Voss
2019-08-14 18:50   ` Andy Shevchenko
2019-08-14 20:27     ` Schmauss, Erik
2019-08-16 11:57       ` Nikolaus Voss [this message]
2019-08-30 14:53         ` Shevchenko, Andriy
2019-09-04  7:20           ` Nikolaus Voss
2019-09-06 17:46             ` Shevchenko, Andriy
2019-09-12  8:05               ` Nikolaus Voss
2019-09-12  8:07               ` [PATCH] ACPICA: make acpi_load_table() return table index Nikolaus Voss
2019-09-12 14:19                 ` Moore, Robert
2019-09-12 19:36                   ` Ferry Toth
2019-09-25 18:13                     ` Schmauss, Erik
2019-09-26  8:09                       ` Shevchenko, Andriy
2019-09-13  7:44                   ` Nikolaus Voss
2019-09-13 14:20                     ` Moore, Robert
2019-09-13 15:12                       ` Shevchenko, Andriy
2019-09-13 16:48                         ` Ferry Toth
2019-09-13 16:48                           ` Ferry Toth
2019-09-13 17:40                           ` Moore, Robert
2019-09-13 19:56                             ` Rafael J. Wysocki
2019-09-16  9:46                             ` Nikolaus Voss
2019-09-18 14:13                               ` Moore, Robert
2019-09-18 14:31                                 ` Nikolaus Voss
2019-09-19 17:05                                   ` Moore, Robert
2019-09-23  9:05                                     ` Nikolaus Voss
2019-09-24 19:41                                       ` Moore, Robert
2019-09-25 10:18                                         ` Nikolaus Voss
2019-09-25 10:53                                           ` Shevchenko, Andriy
2019-09-19  8:13                 ` Rafael J. Wysocki
2019-09-23  9:08                   ` Nikolaus Voss
2019-09-23  9:47                   ` [PATCH] ACPICA: Introduce acpi_load_table_with_index() Nikolaus Voss
2019-09-24 12:07                     ` Shevchenko, Andriy
2019-09-24 12:08                       ` Shevchenko, Andriy
2019-09-25 10:20                         ` Nikolaus Voss
2019-09-24 15:11                     ` Andy Shevchenko
2019-09-25 10:22                       ` Nikolaus Voss
2019-09-26 16:09                 ` [PATCH] ACPICA: make acpi_load_table() return table index Schmauss, Erik
2019-09-26 16:35                   ` Shevchenko, Andriy
2019-09-26 16:51                     ` Schmauss, Erik
2019-09-26 17:47                       ` Shevchenko, Andriy
2019-09-26 18:44                       ` Nikolaus Voss
2019-09-26 19:26                         ` Rafael J. Wysocki
2019-09-26 19:41                           ` Schmauss, Erik
2019-09-26 18:43                   ` Nikolaus Voss
2019-05-29 12:18 ` [PATCH 2/3] PWM framework: add support referencing PWMs from ACPI Nikolaus Voss
2019-05-30 14:54   ` Dan Murphy
2019-05-31 12:24     ` Pavel Machek
2019-06-03  9:27     ` Nikolaus Voss
2019-05-29 12:18 ` [PATCH 3/3] leds-pwm.c: support ACPI via firmware-node framework Nikolaus Voss
2019-05-30 15:14   ` Dan Murphy
2019-06-03  9:44     ` Nikolaus Voss

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