linux-stable/include/asm-arm/mmu.h
Russell King 516793c61b [ARM] ARMv6: add CPU_HAS_ASID configuration
Presently, we check for the minimum ARM architecture that we're
building for to determine whether we need ASID support.  This is
wrong - if we're going to support a range of CPUs which include
ARMv6 or higher, we need the ASID.

Convert the checks to use a new configuration symbol, and arrange
for ARMv6 and higher CPU entries to select it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-17 10:19:23 +01:00

33 lines
534 B
C

#ifndef __ARM_MMU_H
#define __ARM_MMU_H
#ifdef CONFIG_MMU
typedef struct {
#ifdef CONFIG_CPU_HAS_ASID
unsigned int id;
#endif
unsigned int kvm_seq;
} mm_context_t;
#ifdef CONFIG_CPU_HAS_ASID
#define ASID(mm) ((mm)->context.id & 255)
#else
#define ASID(mm) (0)
#endif
#else
/*
* From nommu.h:
* Copyright (C) 2002, David McCullough <davidm@snapgear.com>
* modified for 2.6 by Hyok S. Choi <hyok.choi@samsung.com>
*/
typedef struct {
struct vm_list_struct *vmlist;
unsigned long end_brk;
} mm_context_t;
#endif
#endif