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x86/ioapic: Check x2apic really

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The x2apic_preenabled flag is just a horrible hack and if X2APIC
support is disabled it does not reflect the actual hardware
state. Check the hardware instead.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/20150115211702.541280622@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner
2015-01-15 21:22:14 +00:00
parent bfb0507029
commit 2ca5b40479
3 changed files with 4 additions and 4 deletions
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2
arch/x86/include/asm/apic.h
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@@ -178,7 +178,6 @@ static inline u64 native_x2apic_icr_read(void)
extern int x2apic_mode;
extern int x2apic_phys;
extern int x2apic_preenabled;
extern void check_x2apic(void);
extern void enable_x2apic(void);
static inline int x2apic_enabled(void)
@@ -210,7 +209,6 @@ static inline void x2apic_force_phys(void)
}
#define x2apic_mode (0)
#define x2apic_preenabled (0)
#define x2apic_supported() (0)
#endif