From 614dd0585f376a25c638abbed9c5fbd21d7baece Mon Sep 17 00:00:00 2001 From: Russell King Date: Sun, 21 Nov 2010 11:41:57 +0000 Subject: ARM: pgtable: collect up identity mapping functions We have two places where we create identity mappings - one when we bring secondary CPUs online, and one where we setup some mappings for soft- reboot. Combine these two into a single implementation. Also collect the identity mapping deletion function. Signed-off-by: Russell King --- arch/arm/kernel/smp.c | 34 ---------------------------------- 1 file changed, 34 deletions(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 4631380..73cef40 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -68,40 +68,6 @@ enum ipi_msg_type { IPI_CPU_STOP, }; -static inline void identity_mapping_add(pgd_t *pgd, unsigned long start, - unsigned long end) -{ - unsigned long addr, prot; - pmd_t *pmd; - - prot = PMD_TYPE_SECT | PMD_SECT_AP_WRITE; - if (cpu_architecture() <= CPU_ARCH_ARMv5TEJ && !cpu_is_xscale()) - prot |= PMD_BIT4; - - for (addr = start & PGDIR_MASK; addr < end;) { - pmd = pmd_offset(pgd + pgd_index(addr), addr); - pmd[0] = __pmd(addr | prot); - addr += SECTION_SIZE; - pmd[1] = __pmd(addr | prot); - addr += SECTION_SIZE; - flush_pmd_entry(pmd); - } -} - -static inline void identity_mapping_del(pgd_t *pgd, unsigned long start, - unsigned long end) -{ - unsigned long addr; - pmd_t *pmd; - - for (addr = start & PGDIR_MASK; addr < end; addr += PGDIR_SIZE) { - pmd = pmd_offset(pgd + pgd_index(addr), addr); - pmd[0] = __pmd(0); - pmd[1] = __pmd(0); - clean_pmd_entry(pmd); - } -} - int __cpuinit __cpu_up(unsigned int cpu) { struct cpuinfo_arm *ci = &per_cpu(cpu_data, cpu); -- cgit v1.1