From 2b3b4835c94226681c496de9446d456dcf42ed08 Mon Sep 17 00:00:00 2001 From: Bernhard Kaindl Date: Wed, 2 May 2007 19:27:17 +0200 Subject: [PATCH] [PATCH] x86: Adds mtrr_save_fixed_ranges() for use in two later patches. In this current implementation which is used in other patches, mtrr_save_fixed_ranges() accepts a dummy void pointer because in the current implementation of one of these patches, this function may be called from smp_call_function_single() which requires that this function takes a void pointer argument. This function calls get_fixed_ranges(), passing mtrr_state.fixed_ranges which is the element of the static struct which stores our current backup of the fixed-range MTRR values which all CPUs shall be using. Because mtrr_save_fixed_ranges calls get_fixed_ranges after kernel initialisation time, __init needs to be removed from the declaration of get_fixed_ranges(). If CONFIG_MTRR is not set, we define mtrr_save_fixed_ranges as an empty statement because there is nothing to do. AK: Moved prototypes for x86-64 around to fix warnings Signed-off-by: Bernhard Kaindl Signed-off-by: Andi Kleen Cc: Andrew Morton Cc: Andi Kleen Cc: Dave Jones --- arch/i386/kernel/cpu/mtrr/generic.c | 7 ++++++- include/asm-i386/mtrr.h | 2 ++ include/asm-x86_64/mtrr.h | 2 ++ 3 files changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/i386/kernel/cpu/mtrr/generic.c b/arch/i386/kernel/cpu/mtrr/generic.c index 68b383788882..150cf5055a3c 100644 --- a/arch/i386/kernel/cpu/mtrr/generic.c +++ b/arch/i386/kernel/cpu/mtrr/generic.c @@ -37,7 +37,7 @@ get_mtrr_var_range(unsigned int index, struct mtrr_var_range *vr) rdmsr(MTRRphysMask_MSR(index), vr->mask_lo, vr->mask_hi); } -static void __init +static void get_fixed_ranges(mtrr_type * frs) { unsigned int *p = (unsigned int *) frs; @@ -51,6 +51,11 @@ get_fixed_ranges(mtrr_type * frs) rdmsr(MTRRfix4K_C0000_MSR + i, p[6 + i * 2], p[7 + i * 2]); } +void mtrr_save_fixed_ranges(void *info) +{ + get_fixed_ranges(mtrr_state.fixed_ranges); +} + static void __init print_fixed(unsigned base, unsigned step, const mtrr_type*types) { unsigned i; diff --git a/include/asm-i386/mtrr.h b/include/asm-i386/mtrr.h index 07f063ae26ea..02a41b99bd7e 100644 --- a/include/asm-i386/mtrr.h +++ b/include/asm-i386/mtrr.h @@ -69,6 +69,7 @@ struct mtrr_gentry /* The following functions are for use by other drivers */ # ifdef CONFIG_MTRR +extern void mtrr_save_fixed_ranges(void *); extern int mtrr_add (unsigned long base, unsigned long size, unsigned int type, char increment); extern int mtrr_add_page (unsigned long base, unsigned long size, @@ -79,6 +80,7 @@ extern void mtrr_centaur_report_mcr(int mcr, u32 lo, u32 hi); extern void mtrr_ap_init(void); extern void mtrr_bp_init(void); # else +#define mtrr_save_fixed_ranges(arg) do {} while (0) static __inline__ int mtrr_add (unsigned long base, unsigned long size, unsigned int type, char increment) { diff --git a/include/asm-x86_64/mtrr.h b/include/asm-x86_64/mtrr.h index 66809eca98cf..1b326cbb9305 100644 --- a/include/asm-x86_64/mtrr.h +++ b/include/asm-x86_64/mtrr.h @@ -138,9 +138,11 @@ struct mtrr_gentry32 #ifdef CONFIG_MTRR extern void mtrr_ap_init(void); extern void mtrr_bp_init(void); +extern void mtrr_save_fixed_ranges(void *); #else #define mtrr_ap_init() do {} while (0) #define mtrr_bp_init() do {} while (0) +#define mtrr_save_fixed_ranges(arg) do {} while (0) #endif #endif /* __KERNEL__ */