| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _LINUX_MMU_CONTEXT_H |
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| 3 | #define _LINUX_MMU_CONTEXT_H |
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| 4 | |
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| 5 | #include <asm/mmu_context.h> |
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| 6 | #include <asm/mmu.h> |
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| 7 | |
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| 8 | /* Architectures that care about IRQ state in switch_mm can override this. */ |
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| 9 | #ifndef switch_mm_irqs_off |
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| 10 | # define switch_mm_irqs_off switch_mm |
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| 11 | #endif |
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| 12 | |
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| 13 | #ifndef leave_mm |
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| 14 | static inline void leave_mm(int cpu) { } |
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| 15 | #endif |
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| 16 | |
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| 17 | /* |
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| 18 | * CPUs that are capable of running user task @p. Must contain at least one |
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| 19 | * active CPU. It is assumed that the kernel can run on all CPUs, so calling |
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| 20 | * this for a kernel thread is pointless. |
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| 21 | * |
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| 22 | * By default, we assume a sane, homogeneous system. |
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| 23 | */ |
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| 24 | #ifndef task_cpu_possible_mask |
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| 25 | # define task_cpu_possible_mask(p) cpu_possible_mask |
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| 26 | # define task_cpu_possible(cpu, p) true |
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| 27 | #else |
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| 28 | # define task_cpu_possible(cpu, p) cpumask_test_cpu((cpu), task_cpu_possible_mask(p)) |
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| 29 | #endif |
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| 30 | |
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| 31 | #ifndef mm_untag_mask |
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| 32 | static inline unsigned long mm_untag_mask(struct mm_struct *mm) |
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| 33 | { |
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| 34 | return -1UL; |
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| 35 | } |
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| 36 | #endif |
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| 37 | |
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| 38 | #ifndef arch_pgtable_dma_compat |
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| 39 | static inline bool arch_pgtable_dma_compat(struct mm_struct *mm) |
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| 40 | { |
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| 41 | return true; |
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| 42 | } |
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| 43 | #endif |
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| 44 | |
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| 45 | #endif |
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| 46 | |
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