From: Michael Ellerman <mpe@ellerman.id.au>
To: Nicholas Piggin <npiggin@gmail.com>, linux-arch@vger.kernel.org
Cc: Nicholas Piggin <npiggin@gmail.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Arnd Bergmann <arnd@arndb.de>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@ozlabs.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v2 16/23] powerpc: use asm-generic/mmu_context.h for no-op implementations
Date: Tue, 01 Sep 2020 17:30:59 +1000 [thread overview]
Message-ID: <87sgc20x8s.fsf@mpe.ellerman.id.au> (raw)
In-Reply-To: <20200826145249.745432-17-npiggin@gmail.com>
Nicholas Piggin <npiggin@gmail.com> writes:
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <paulus@ozlabs.org>
> Cc: linuxppc-dev@lists.ozlabs.org
> Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
> ---
> arch/powerpc/include/asm/mmu_context.h | 22 +++++++---------------
> 1 file changed, 7 insertions(+), 15 deletions(-)
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
cheers
> 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
next prev parent reply other threads:[~2020-09-01 7:31 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-26 14:52 [PATCH v2 00/23] Use asm-generic for mmu_context no-op functions Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 01/23] asm-generic: add generic MMU versions of mmu context functions Nicholas Piggin
2020-08-26 18:13 ` kernel test robot
2020-09-01 6:49 ` Mike Rapoport
2020-09-01 7:14 ` Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 02/23] alpha: use asm-generic/mmu_context.h for no-op implementations Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 03/23] arc: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 04/23] arm: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 05/23] arm64: " Nicholas Piggin
2020-08-26 15:25 ` Catalin Marinas
2020-08-26 16:20 ` Nicholas Piggin
2020-10-27 9:59 ` Naresh Kamboju
2020-08-26 18:42 ` kernel test robot
2020-08-26 18:57 ` kernel test robot
2020-08-26 23:55 ` kernel test robot
2020-08-26 14:52 ` [PATCH v2 06/23] csky: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 07/23] hexagon: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 08/23] ia64: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 09/23] m68k: " Nicholas Piggin
2020-08-27 9:33 ` Geert Uytterhoeven
2020-09-01 6:23 ` Nicholas Piggin
2020-09-01 7:03 ` Geert Uytterhoeven
2020-09-01 7:50 ` Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 10/23] microblaze: " Nicholas Piggin
2020-08-31 14:15 ` Michal Simek
2020-09-01 6:15 ` Nicholas Piggin
2020-09-01 6:41 ` Michal Simek
2020-09-01 7:09 ` Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 11/23] mips: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 12/23] nds32: " Nicholas Piggin
2020-08-28 10:09 ` Greentime Hu
2020-08-26 14:52 ` [PATCH v2 13/23] nios2: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 14/23] openrisc: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 15/23] parisc: " Nicholas Piggin
2020-08-29 9:09 ` Helge Deller
2020-08-26 14:52 ` [PATCH v2 16/23] powerpc: " Nicholas Piggin
2020-09-01 7:30 ` Michael Ellerman [this message]
2020-08-26 14:52 ` [PATCH v2 17/23] riscv: " Nicholas Piggin
2020-08-26 16:42 ` Pekka Enberg
2020-08-26 14:52 ` [PATCH v2 18/23] s390: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 19/23] sh: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 20/23] sparc: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 21/23] um: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 22/23] x86: " Nicholas Piggin
2020-08-26 14:52 ` [PATCH v2 23/23] xtensa: " Nicholas Piggin
2020-08-26 20:12 ` [PATCH v2 00/23] Use asm-generic for mmu_context no-op functions Arnd Bergmann
2020-08-30 10:18 ` Mike Rapoport
2020-09-01 6:17 ` Nicholas Piggin
2020-09-01 6:54 ` Mike Rapoport
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