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[POWERPC] FWNMI is only used on pSeries

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This saves 4k on non pSeries builds (except for iSeries where it saves
almost 4k).

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Stephen Rothwell 2007-09-18 17:25:12 +10:00 committed by Paul Mackerras
parent ee7a76da1e
commit 9e4859ef54
2 changed files with 9 additions and 0 deletions
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2
arch/powerpc/kernel/crash_dump.c
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@ -54,8 +54,10 @@ void __init setup_kdump_trampoline(void)
create_trampoline(i);
}
#ifdef CONFIG_PPC_PSERIES
create_trampoline(__pa(system_reset_fwnmi) - PHYSICAL_START);
create_trampoline(__pa(machine_check_fwnmi) - PHYSICAL_START);
#endif /* CONFIG_PPC_PSERIES */
DBG(" <- setup_kdump_trampoline()\n");
}

7
arch/powerpc/kernel/head_64.S
View file

@ -341,6 +341,7 @@ slb_miss_user_pseries:
b . /* prevent spec. execution */
#endif /* __DISABLED__ */
#ifdef CONFIG_PPC_PSERIES
/*
* Vectors for the FWNMI option. Share common code.
*/
@ -358,6 +359,8 @@ machine_check_fwnmi:
mtspr SPRN_SPRG1,r13 /* save r13 */
EXCEPTION_PROLOG_PSERIES_FORCE_64BIT(PACA_EXMC, machine_check_common)
#endif /* CONFIG_PPC_PSERIES */
/*** Common interrupt handlers ***/
STD_EXCEPTION_COMMON(0x100, system_reset, .system_reset_exception)
@ -1012,6 +1015,7 @@ _GLOBAL(do_stab_bolted)
initial_stab:
.space 4096
#ifdef CONFIG_PPC_PSERIES
/*
* Data area reserved for FWNMI option.
* This address (0x7000) is fixed by the RPA.
@ -1019,6 +1023,7 @@ initial_stab:
.= 0x7000
.globl fwnmi_data_area
fwnmi_data_area:
#endif /* CONFIG_PPC_PSERIES */
/* iSeries does not use the FWNMI stuff, so it is safe to put
* this here, even if we later allow kernels that will boot on
@ -1043,7 +1048,9 @@ xLparMap:
#endif /* CONFIG_PPC_ISERIES */
#ifdef CONFIG_PPC_PSERIES
. = 0x8000
#endif /* CONFIG_PPC_PSERIES */
/*
* On pSeries and most other platforms, secondary processors spin