mem= option for broken bioses

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* mem= option for broken bioses
@ 2003-02-26 20:38 Pavel Machek
  0 siblings, 0 replies; 3+ messages in thread
From: Pavel Machek @ 2003-02-26 20:38 UTC (permalink / raw)
  To: ACPI mailing list, kernel list, Andrew Grover

Hi!

I've seen broken bios that did not mark acpi tables in e820
tables. This allows user to override it. Please apply,

							Pavel

--- linux/arch/i386/kernel/setup.c	2003-02-11 17:50:57.000000000 +0100
+++ linux-tablet/arch/i386/kernel/setup.c	2003-02-20 18:03:03.000000000 +0100
@@ -546,6 +546,12 @@
 				if (*from == '@') {
 					start_at = memparse(from+1, &from);
 					add_memory_region(start_at, mem_size, E820_RAM);
+				} else if (*from == '#') {
+					start_at = memparse(from+1, &from);
+					add_memory_region(start_at, mem_size, E820_ACPI);
+				} else if (*from == '$') {
+					start_at = memparse(from+1, &from);
+					add_memory_region(start_at, mem_size, E820_RESERVED);
 				} else {
 					limit_regions(mem_size);
 					userdef=1;

-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]

^ permalink raw reply	[flat|nested] 3+ messages in thread

* RE: mem= option for broken bioses
@ 2003-02-26 22:39 Grover, Andrew
       [not found] ` <F760B14C9561B941B89469F59BA3A8471380D7-sBd4vmA9Se4Lll3ZsUKC9FDQ4js95KgL@public.gmane.org>
  0 siblings, 1 reply; 3+ messages in thread
From: Grover, Andrew @ 2003-02-26 22:39 UTC (permalink / raw)
  To: Pavel Machek, ACPI mailing list, kernel list

> From: Pavel Machek [mailto:pavel-+ZI9xUNit7I@public.gmane.org] 
> I've seen broken bios that did not mark acpi tables in e820
> tables. This allows user to override it. Please apply,

OK, looks reasonable. Can you also gen up a patch documenting this in
kernel-parameters.txt?

Thanks -- Regards -- Andy

^ permalink raw reply	[flat|nested] 3+ messages in thread

[parent not found: <F760B14C9561B941B89469F59BA3A8471380D7-sBd4vmA9Se4Lll3ZsUKC9FDQ4js95KgL@public.gmane.org>]

* Re: mem= option for broken bioses
       [not found] ` <F760B14C9561B941B89469F59BA3A8471380D7-sBd4vmA9Se4Lll3ZsUKC9FDQ4js95KgL@public.gmane.org>
@ 2003-02-26 22:44   ` Pavel Machek
  0 siblings, 0 replies; 3+ messages in thread
From: Pavel Machek @ 2003-02-26 22:44 UTC (permalink / raw)
  To: Grover, Andrew; +Cc: ACPI mailing list, kernel list

Hi!

> > From: Pavel Machek [mailto:pavel-+ZI9xUNit7I@public.gmane.org] 
> > I've seen broken bios that did not mark acpi tables in e820
> > tables. This allows user to override it. Please apply,
> 
> OK, looks reasonable. Can you also gen up a patch documenting this in
> kernel-parameters.txt?

You can, assuming you took the patch ;-).

								Pavel

--- clean/Documentation/kernel-parameters.txt	2003-02-11 17:40:28.000000000 +0100
+++ linux/Documentation/kernel-parameters.txt	2003-02-26 23:43:21.000000000 +0100
@@ -516,6 +516,10 @@
 			[KNL,BOOT] Force usage of a specific region of memory
 			Region of memory to be used, from ss to ss+nn.
 
+	mem=nn[KMG]#ss[KMG]
+			[KNL,BOOT,ACPI] Mark specific memory as ACPI data.
+			Region of memory to be used, from ss to ss+nn.
+
 	mem=nopentium	[BUGS=IA-32] Disable usage of 4MB pages for kernel
 			memory.
 
-- 
Horseback riding is like software...
...vgf orggre jura vgf serr.

^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2003-02-26 22:44 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2003-02-26 20:38 mem= option for broken bioses Pavel Machek
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2003-02-26 22:39 Grover, Andrew
     [not found] ` <F760B14C9561B941B89469F59BA3A8471380D7-sBd4vmA9Se4Lll3ZsUKC9FDQ4js95KgL@public.gmane.org>
2003-02-26 22:44   ` Pavel Machek

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