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Date: Thu, 27 Aug 2020 00:52:42 +1000 From: Nicholas Piggin <npiggin@...il.com> To: linux-arch@...r.kernel.org Cc: Nicholas Piggin <npiggin@...il.com>, linux-kernel@...r.kernel.org, linux-mm@...ck.org, Arnd Bergmann <arnd@...db.de>, Michael Ellerman <mpe@...erman.id.au>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mackerras <paulus@...abs.org>, linuxppc-dev@...ts.ozlabs.org Subject: [PATCH v2 16/23] powerpc: use asm-generic/mmu_context.h for no-op implementations Cc: Michael Ellerman <mpe@...erman.id.au> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org> Cc: Paul Mackerras <paulus@...abs.org> Cc: linuxppc-dev@...ts.ozlabs.org Signed-off-by: Nicholas Piggin <npiggin@...il.com> --- arch/powerpc/include/asm/mmu_context.h | 22 +++++++--------------- 1 file changed, 7 insertions(+), 15 deletions(-) diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 7f3658a97384..bc22e247ab55 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -14,7 +14,9 @@ /* * Most if the context management is out of line */ +#define init_new_context init_new_context extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm); +#define destroy_context destroy_context extern void destroy_context(struct mm_struct *mm); #ifdef CONFIG_SPAPR_TCE_IOMMU struct mm_iommu_table_group_mem_t; @@ -235,27 +237,15 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, } #define switch_mm_irqs_off switch_mm_irqs_off - -#define deactivate_mm(tsk,mm) do { } while (0) - -/* - * After we have set current->mm to a new value, this activates - * the context for the new mm so we see the new mappings. - */ -static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next) -{ - switch_mm(prev, next, current); -} - -/* We don't currently use enter_lazy_tlb() for anything */ +#ifdef CONFIG_PPC_BOOK3E_64 +#define enter_lazy_tlb enter_lazy_tlb static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) { /* 64-bit Book3E keeps track of current PGD in the PACA */ -#ifdef CONFIG_PPC_BOOK3E_64 get_paca()->pgd = NULL; -#endif } +#endif extern void arch_exit_mmap(struct mm_struct *mm); @@ -298,5 +288,7 @@ static inline int arch_dup_mmap(struct mm_struct *oldmm, return 0; } +#include <asm-generic/mmu_context.h> + #endif /* __KERNEL__ */ #endif /* __ASM_POWERPC_MMU_CONTEXT_H */ -- 2.23.0
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