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x86: make 64bit hpet_set_mapping to use ioremap too, v2
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keep the one for VSYSCALL_HPET

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Yinghai Lu authored and Ingo Molnar committed Jul 14, 2008
1 parent 87a1c44 commit 2387ce5
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Showing 2 changed files with 4 additions and 17 deletions.
20 changes: 4 additions & 16 deletions arch/x86/kernel/hpet.c
Original file line number Diff line number Diff line change
Expand Up @@ -36,34 +36,22 @@ static inline void hpet_writel(unsigned long d, unsigned long a)
}

#ifdef CONFIG_X86_64

#include <asm/pgtable.h>

static inline void hpet_set_mapping(void)
{
set_fixmap_nocache(FIX_HPET_BASE, hpet_address);
__set_fixmap(VSYSCALL_HPET, hpet_address, PAGE_KERNEL_VSYSCALL_NOCACHE);
hpet_virt_address = (void __iomem *)fix_to_virt(FIX_HPET_BASE);
}

static inline void hpet_clear_mapping(void)
{
hpet_virt_address = NULL;
}

#else
#endif

static inline void hpet_set_mapping(void)
{
hpet_virt_address = ioremap_nocache(hpet_address, HPET_MMAP_SIZE);
#ifdef CONFIG_X86_64
__set_fixmap(VSYSCALL_HPET, hpet_address, PAGE_KERNEL_VSYSCALL_NOCACHE);
#endif
}

static inline void hpet_clear_mapping(void)
{
iounmap(hpet_virt_address);
hpet_virt_address = NULL;
}
#endif

/*
* HPET command line enable / disable
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1 change: 0 additions & 1 deletion include/asm-x86/fixmap_64.h
Original file line number Diff line number Diff line change
Expand Up @@ -40,7 +40,6 @@ enum fixed_addresses {
VSYSCALL_HPET,
FIX_DBGP_BASE,
FIX_EARLYCON_MEM_BASE,
FIX_HPET_BASE,
FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
FIX_IO_APIC_BASE_0,
FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1,
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