Attachment 312765 Details for Bug 455253 – ia64 workaround for this issue

[patch] ia64 workaround for this issue

455253.patch (text/plain), 3.73 KB, created by Prarit Bhargava on 2008-07-28 12:30:42 UTC

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Creator: Prarit Bhargava

Created: 2008-07-28 12:30:42 UTC

Size: 3.73 KB

patch

obsolete

>diff -X /tmp/dontdiff -urNp linux-2.6.9.orig/drivers/acpi/system.c linux-2.6.9/drivers/acpi/system.c
>--- linux-2.6.9.orig/drivers/acpi/system.c	2008-07-27 19:09:05.000000000 -0400
>+++ linux-2.6.9/drivers/acpi/system.c	2008-07-28 08:24:34.000000000 -0400
>@@ -102,7 +102,13 @@ acpi_system_read_dsdt (
> 
> 	res = simple_read_from_buffer(buffer, count, ppos,
> 				      dsdt.pointer, dsdt.length);
>-	acpi_os_free(dsdt.pointer);
>+#if CONFIG_IA64
>+	if (ia64_platform_is("dig"))
>+		free_pages(dsdt.pointer, get_order(dsdt.length));
>+	else
>+#else
>+		acpi_os_free(dsdt.pointer);
>+#endif
> 
> 	return_VALUE(res);
> }
>diff -X /tmp/dontdiff -urNp linux-2.6.9.orig/drivers/acpi/tables/tbxface.c linux-2.6.9/drivers/acpi/tables/tbxface.c
>--- linux-2.6.9.orig/drivers/acpi/tables/tbxface.c	2008-07-27 19:09:05.000000000 -0400
>+++ linux-2.6.9/drivers/acpi/tables/tbxface.c	2008-07-28 08:23:32.000000000 -0400
>@@ -429,7 +429,13 @@ acpi_get_table (
> 
> 	/* Validate/Allocate/Clear caller buffer */
> 
>-	status = acpi_ut_initialize_buffer (ret_buffer, table_length);
>+#ifdef CONFIG_IA64
>+	if ((table_type == ACPI_TABLE_DSDT) && ia64_platform_is("dig"))
>+		status = acpi_ut_allocate_dsdt_buffer(ret_buffer,
>+						      table_length);
>+	else
>+#endif
>+		status = acpi_ut_initialize_buffer (ret_buffer, table_length);
> 	if (ACPI_FAILURE (status)) {
> 		return_ACPI_STATUS (status);
> 	}
>diff -X /tmp/dontdiff -urNp linux-2.6.9.orig/drivers/acpi/utilities/utalloc.c linux-2.6.9/drivers/acpi/utilities/utalloc.c
>--- linux-2.6.9.orig/drivers/acpi/utilities/utalloc.c	2008-07-27 19:09:05.000000000 -0400
>+++ linux-2.6.9/drivers/acpi/utilities/utalloc.c	2008-07-28 08:28:33.000000000 -0400
>@@ -41,8 +41,11 @@
>  * POSSIBILITY OF SUCH DAMAGES.
>  */
> 
>-
> #include <acpi/acpi.h>
>+#ifdef CONFIG_IA64
>+#include <linux/gfp.h>
>+#include <linux/mm.h>
>+#endif
> 
> #define _COMPONENT          ACPI_UTILITIES
> 	 ACPI_MODULE_NAME    ("utalloc")
>@@ -254,6 +257,44 @@ acpi_ut_validate_buffer (
> 	return (AE_OK);
> }
> 
>+#ifdef CONFIG_IA64
>+/*******************************************************************************
>+ *
>+ * FUNCTION:    acpi_ut_initialize_dsdt_buffer
>+ *
>+ * PARAMETERS:  Buffer              - Buffer to be validated
>+ *              required_length     - Length needed
>+ *
>+ * RETURN:      Status
>+ *
>+ * DESCRIPTION: There seems to a bug with the HP BIOS/ACPI tables where the
>+ *		dsdt is > 128K in size.   RHEL4 kmalloc limit
>+ *		is 128K so alloc_pages() must be used to dump the dsdt.
>+ *		Only allocate a new buffer using alloc_pages().
>+ *		The memory used here is shortlived and is free_pages()'d after
>+ *		the table is dumped.
>+ *
>+ ******************************************************************************/
>+
>+acpi_status
>+acpi_ut_allocate_dsdt_buffer(struct acpi_buffer *buffer,
>+			       acpi_size required_length)
>+{
>+	struct page *p;
>+
>+	/* Allocate a new buffer */
>+	p = alloc_pages(GFP_KERNEL, get_order(required_length));
>+	buffer->pointer = page_address(p);
>+	if (!buffer->pointer)
>+		return (AE_NO_MEMORY);
>+
>+	/* Clear the buffer */
>+	ACPI_MEMSET (buffer->pointer, 0, required_length);
>+
>+	buffer->length = required_length;
>+	return (AE_OK);
>+}
>+#endif
> 
> /*******************************************************************************
>  *
>diff -X /tmp/dontdiff -urNp linux-2.6.9.orig/include/acpi/acutils.h linux-2.6.9/include/acpi/acutils.h
>--- linux-2.6.9.orig/include/acpi/acutils.h	2008-07-27 19:09:10.000000000 -0400
>+++ linux-2.6.9/include/acpi/acutils.h	2008-07-28 07:07:47.000000000 -0400
>@@ -773,6 +773,11 @@ acpi_ut_initialize_buffer (
> 	struct acpi_buffer              *buffer,
> 	acpi_size                       required_length);
> 
>+#ifdef CONFIG_IA64
>+acpi_status 
>+acpi_ut_allocate_dsdt_buffer(struct acpi_buffer *buffer,
>+			     acpi_size required_length);
>+#endif
> 
> /* Memory allocation functions */
>

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Attachments on bug 455253: 312765