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SubjectRe: [PATCH 23/24] x86: use asm-generic/mmu_context.h for no-op implementations
On Tue, Jul 28, 2020 at 01:34:04PM +1000, Nicholas Piggin wrote:
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: x86@kernel.org
> Cc: "H. Peter Anvin" <hpa@zytor.com>
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>

> ---
> arch/x86/include/asm/mmu_context.h | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
> index 47562147e70b..255750548433 100644
> --- a/arch/x86/include/asm/mmu_context.h
> +++ b/arch/x86/include/asm/mmu_context.h
> @@ -92,12 +92,14 @@ static inline void switch_ldt(struct mm_struct *prev, struct mm_struct *next)
> }
> #endif
>
> +#define enter_lazy_tlb enter_lazy_tlb
> extern void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk);
>
> /*
> * Init a new mm. Used on mm copies, like at fork()
> * and on mm's that are brand-new, like at execve().
> */
> +#define init_new_context init_new_context
> static inline int init_new_context(struct task_struct *tsk,
> struct mm_struct *mm)
> {
> @@ -117,6 +119,8 @@ static inline int init_new_context(struct task_struct *tsk,
> init_new_context_ldt(mm);
> return 0;
> }
> +
> +#define destroy_context destroy_context
> static inline void destroy_context(struct mm_struct *mm)
> {
> destroy_context_ldt(mm);
> @@ -215,4 +219,6 @@ static inline bool arch_vma_access_permitted(struct vm_area_struct *vma,
>
> unsigned long __get_current_cr3_fast(void);
>
> +#include <asm-generic/mmu_context.h>
> +
> #endif /* _ASM_X86_MMU_CONTEXT_H */
> --
> 2.23.0
>

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