[patch 4/4] x86, apic: Always define nox2apic and define it asinitdata

From: David Rientjes
Date: Wed Feb 05 2014 - 02:55:24 EST


The "nox2apic" variable can be defined as __initdata since it is only
used for bootstrap. It can now unconditionally be defined since it will
later be freed.

At the same time, it is also better off as a bool.

Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
---
arch/x86/include/asm/apic.h | 1 -
arch/x86/kernel/apic/apic.c | 9 ++++++---
2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -217,7 +217,6 @@ static inline void x2apic_force_phys(void)
{
}

-#define nox2apic 0
#define x2apic_preenabled 0
#define x2apic_supported() 0
#endif
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -133,6 +133,10 @@ static inline void imcr_apic_to_pic(void)
* +1=force-enable
*/
static int force_enable_local_apic __initdata;
+
+/* Control whether x2APIC mode is enabled or not */
+static bool nox2apic __initdata;
+
/*
* APIC command line parameters
*/
@@ -162,8 +166,7 @@ int x2apic_mode;
/* x2apic enabled before OS handover */
int x2apic_preenabled;
static int x2apic_disabled;
-static int nox2apic;
-static __init int setup_nox2apic(char *str)
+static int __init setup_nox2apic(char *str)
{
if (x2apic_enabled()) {
int apicid = native_apic_msr_read(APIC_ID);
@@ -178,7 +181,7 @@ static __init int setup_nox2apic(char *str)
} else
setup_clear_cpu_cap(X86_FEATURE_X2APIC);

- nox2apic = 1;
+ nox2apic = true;

return 0;
}
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