Re: [patch 5/6] Altix: reinitialize acpi tables

[Len Brown <lenb@kernel.org>]

Andrew,
This patch is munged -- please remove it from mm.

The correct patch is already present in git-acpi.patch,
which perhaps is why patch munged it on entry into mm.

thanks,
-Len


On Tuesday 06 March 2007 05:29, akpm@linux-foundation.org wrote:
> From: John Keller <jpk@sgi.com>
> 
> To provide compatibilty with SN kernels that do and do not have ACPI IO
> support, the SN PROM must build different versions of some ACPI tables
> based on which kernel is booting.  As such, the tables may have to change
> at kernel boot time.  By default, prior to kernel boot, the PROM builds an
> empty DSDT (header only) and no SSDTs.  If an ACPI capable kernel boots,
> the kernel will notify the PROM, at platform setup time, and the PROM will
> build full DSDT and SSDT tables.
> 
> With the latest changes to acpi_table_init(), the table lengths are saved,
> and when our PROM changes them, the changes are not seen, and the kernel
> will crash on boot.  Because of issues with kexec support, we are not able
> to create the tables prior to acpi_table_init().  As a result, we are
> making a second call to acpi_table_init() to process the rebuilt DSDT and
> SSDTs.
> 
> Signed-off-by: John Keller <jpk@sgi.com>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> ---
> 
>  arch/ia64/sn/kernel/setup.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff -puN arch/ia64/sn/kernel/setup.c~altix-reinitialize-acpi-tables arch/ia64/sn/kernel/setup.c
> --- a/arch/ia64/sn/kernel/setup.c~altix-reinitialize-acpi-tables
> +++ a/arch/ia64/sn/kernel/setup.c
> @@ -54,6 +54,8 @@
>  #include "xtalk/hubdev.h"
>  #include <asm/sn/klconfig.h>
>  
> +	/* Load the new DSDT and SSDT tables into the global table list. */
> + 	acpi_table_init();
>  
>  DEFINE_PER_CPU(struct pda_s, pda_percpu);
>  
> _
> -
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