* 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
* 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.
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2003-02-26 22:44 ` Pavel Machek
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