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From: "Moore, Robert" <robert.moore@intel.com>
To: Nikolaus Voss <nv@vosn.de>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	Len Brown <lenb@kernel.org>,
	"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>,
	ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
	"open list:ACPI COMPONENT ARCHITECTURE (ACPICA)"
	<devel@acpica.org>,
	"linux-leds@vger.kernel.org" <linux-leds@vger.kernel.org>,
	Linux PWM List <linux-pwm@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"nikolaus.voss@loewensteinmedical.de" 
	<nikolaus.voss@loewensteinmedical.de>
Subject: RE: [PATCH v2 1/3] ACPI: Resolve objects on host-directed table loads
Date: Wed, 19 Jun 2019 15:59:33 +0000
Message-ID: <94F2FBAB4432B54E8AACC7DFDE6C92E3B95FC28D@ORSMSX110.amr.corp.intel.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1906191123400.34742@fox.voss.local>



> -----Original Message-----
> From: Nikolaus Voss [mailto:nv@vosn.de]
> Sent: Wednesday, June 19, 2019 2:31 AM
> To: Moore, Robert <robert.moore@intel.com>
> Cc: Rafael J. Wysocki <rafael@kernel.org>; Rafael J. Wysocki
> <rjw@rjwysocki.net>; Len Brown <lenb@kernel.org>; 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>; ACPI Devel
> Maling List <linux-acpi@vger.kernel.org>; open list:ACPI COMPONENT
> ARCHITECTURE (ACPICA) <devel@acpica.org>; linux-leds@vger.kernel.org;
> Linux PWM List <linux-pwm@vger.kernel.org>; Linux Kernel Mailing List
> <linux-kernel@vger.kernel.org>; nikolaus.voss@loewensteinmedical.de
> Subject: RE: [PATCH v2 1/3] ACPI: Resolve objects on host-directed table
> loads
> 
> Hi Bob,
> 
> On Tue, 18 Jun 2019, Moore, Robert wrote:
> >
> >
> >> -----Original Message-----
> >> From: Moore, Robert
> >> Sent: Tuesday, June 18, 2019 1:25 PM
> >> To: 'Nikolaus Voss' <nv@vosn.de>
> >> Cc: 'Rafael J. Wysocki' <rafael@kernel.org>; 'Rafael J. Wysocki'
> >> <rjw@rjwysocki.net>; 'Len Brown' <lenb@kernel.org>; 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>; 'ACPI Devel Maling List'
> >> <linux-acpi@vger.kernel.org>; 'open list:ACPI COMPONENT ARCHITECTURE
> >> (ACPICA)' <devel@acpica.org>; 'linux- leds@vger.kernel.org' <linux-
> leds@vger.kernel.org>; 'Linux PWM List'
> >> <linux-pwm@vger.kernel.org>; 'Linux Kernel Mailing List' <linux-
> >> kernel@vger.kernel.org>
> >> Subject: RE: [PATCH v2 1/3] ACPI: Resolve objects on host-directed
> >> table loads
> >>
> >> If it is in fact the AcpiLoadTable interface that is incorrect, that
> >> of course is different. I'll check that out next.
> >>
> > [Moore, Robert]
> >
> > Yes, this is the issue, not specifically the Load() operator, but the
> > AcpiLoadTable interface only.
> 
> thanks for checking this out. So what is the conclusion? Is my fix of
> AcpiLoadTable() sufficient or do we need a different solution?
> 
> Niko
> 


Your change is in the correct area. We want to do something like this, however:

diff --git a/source/components/executer/exconfig.c b/source/components/executer/exconfig.c
index 84a058ada..eba1a6d28 100644
--- a/source/components/executer/exconfig.c
+++ b/source/components/executer/exconfig.c
@@ -342,10 +342,9 @@ AcpiExLoadTableOp (
         return_ACPI_STATUS (Status);
     }
 
-    /* Complete the initialization/resolution of package objects */
+    /* Complete the initialization/resolution of new objects */
 
-    Status = AcpiNsWalkNamespace (ACPI_TYPE_PACKAGE, ACPI_ROOT_OBJECT,
-        ACPI_UINT32_MAX, 0, AcpiNsInitOnePackage, NULL, NULL, NULL);
+    AcpiNsInitializeObjects ();
 
     /* Parameter Data (optional) */
 
@@ -620,10 +619,11 @@ AcpiExLoadOp (
         return_ACPI_STATUS (Status);
     }
 
-    /* Complete the initialization/resolution of package objects */
+    /* Complete the initialization/resolution of new objects */
 
-    Status = AcpiNsWalkNamespace (ACPI_TYPE_PACKAGE, ACPI_ROOT_OBJECT,
-        ACPI_UINT32_MAX, 0, AcpiNsInitOnePackage, NULL, NULL, NULL);
+    AcpiExExitInterpreter ();
+    AcpiNsInitializeObjects ();
+    AcpiExEnterInterpreter ();
 
     /* Store the DdbHandle into the Target operand */
 
diff --git a/source/components/tables/tbxfload.c b/source/components/tables/tbxfload.c
index 217d54bf0..1e17db6c8 100644
--- a/source/components/tables/tbxfload.c
+++ b/source/components/tables/tbxfload.c
@@ -479,6 +479,13 @@ AcpiLoadTable (
     ACPI_INFO (("Host-directed Dynamic ACPI Table Load:"));
     Status = AcpiTbInstallAndLoadTable (ACPI_PTR_TO_PHYSADDR (Table),
         ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL, FALSE, &TableIndex);
+    if (ACPI_SUCCESS (Status))
+    {
+        /* Complete the initialization/resolution of new objects */
+
+        AcpiNsInitializeObjects ();
+    }
+
     return_ACPI_STATUS (Status);
 }



> [...]

  reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-12  8:36 [PATCH v2 0/3] PWM framework: add support referencing PWMs from ACPI Nikolaus Voss
2019-06-12  8:36 ` [PATCH v2 1/3] ACPI: Resolve objects on host-directed table loads Nikolaus Voss
2019-06-14  9:12   ` Rafael J. Wysocki
2019-06-14  9:25     ` Nikolaus Voss
2019-06-14 15:35       ` Moore, Robert
2019-06-17  6:24         ` Nikolaus Voss
2019-06-17 21:18           ` Moore, Robert
2019-06-18  9:21             ` Nikolaus Voss
2019-06-18 19:35               ` Moore, Robert
2019-06-18 20:22               ` Moore, Robert
2019-06-18 20:24               ` Moore, Robert
2019-06-18 20:31               ` Moore, Robert
2019-06-19  9:31                 ` Nikolaus Voss
2019-06-19 15:59                   ` Moore, Robert [this message]
2019-06-20  6:49                     ` Nikolaus Voss
2019-06-22  9:04                       ` Rafael J. Wysocki
2019-06-12  8:36 ` [PATCH v2 2/3] PWM framework: add support referencing PWMs from ACPI Nikolaus Voss
2019-06-12  8:36 ` [PATCH v2 3/3] leds-pwm.c: support ACPI via firmware-node framework Nikolaus Voss
2019-06-21 11:01   ` Pavel Machek

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