ff0daca525
Allow section mappings to be setup using ioremap() and torn down with iounmap(). This requires additional support in the MM context switch to ensure that mappings are properly synchronised when mapped in. Based an original implementation by Deepak Saxena, reworked and ARMv6 support added by rmk. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
33 lines
536 B
C
33 lines
536 B
C
#ifndef __ARM_MMU_H
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#define __ARM_MMU_H
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#ifdef CONFIG_MMU
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typedef struct {
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#if __LINUX_ARM_ARCH__ >= 6
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unsigned int id;
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#endif
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unsigned int kvm_seq;
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} mm_context_t;
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#if __LINUX_ARM_ARCH__ >= 6
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#define ASID(mm) ((mm)->context.id & 255)
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#else
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#define ASID(mm) (0)
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#endif
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#else
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/*
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* From nommu.h:
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* Copyright (C) 2002, David McCullough <davidm@snapgear.com>
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* modified for 2.6 by Hyok S. Choi <hyok.choi@samsung.com>
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*/
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typedef struct {
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struct vm_list_struct *vmlist;
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unsigned long end_brk;
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} mm_context_t;
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#endif
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#endif
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