linux-kernel - Re: [PATCH v4 13/15] mm: pgtable: introduce generic __tlb_remove

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Message-ID: <6e1aa2aa-a70d-4292-9c5e-21c8fea386f5@gaisler.com>
Date: Tue, 7 Jan 2025 13:32:03 +0100
From: Andreas Larsson <andreas@...sler.com>
To: Qi Zheng <zhengqi.arch@...edance.com>, peterz@...radead.org,
 agordeev@...ux.ibm.com, kevin.brodsky@....com, palmer@...belt.com,
 tglx@...utronix.de, david@...hat.com, jannh@...gle.com, hughd@...gle.com,
 yuzhao@...gle.com, willy@...radead.org, muchun.song@...ux.dev,
 vbabka@...nel.org, lorenzo.stoakes@...cle.com, akpm@...ux-foundation.org,
 rientjes@...gle.com, vishal.moola@...il.com, arnd@...db.de, will@...nel.org,
 aneesh.kumar@...nel.org, npiggin@...il.com, dave.hansen@...ux.intel.com,
 rppt@...nel.org, ryan.roberts@....com
Cc: linux-mm@...ck.org, linux-arm-kernel@...ts.infradead.org,
 linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org,
 linux-s390@...r.kernel.org, sparclinux@...r.kernel.org,
 linux-kernel@...r.kernel.org, x86@...nel.org, linux-arch@...r.kernel.org,
 linux-csky@...r.kernel.org, linux-hexagon@...r.kernel.org,
 loongarch@...ts.linux.dev, linux-m68k@...ts.linux-m68k.org,
 linux-mips@...r.kernel.org, linux-openrisc@...r.kernel.org,
 linux-sh@...r.kernel.org, linux-um@...ts.infradead.org
Subject: Re: [PATCH v4 13/15] mm: pgtable: introduce generic
 __tlb_remove_table()

On 2024-12-30 10:07, Qi Zheng wrote:
> diff --git a/arch/sparc/include/asm/tlb_32.h b/arch/sparc/include/asm/tlb_32.h
> index 5cd28a8793e39..910254867dfbd 100644
> --- a/arch/sparc/include/asm/tlb_32.h
> +++ b/arch/sparc/include/asm/tlb_32.h
> @@ -2,6 +2,7 @@
>  #ifndef _SPARC_TLB_H
>  #define _SPARC_TLB_H
>  
> +#define __HAVE_ARCH_TLB_REMOVE_TABLE

sparc32 does not select MMU_GATHER_TABLE_FREE, and therefore does not
have (nor need) __tlb_remove_table, so this define should not be added.


>  #include <asm-generic/tlb.h>
>  
>  #endif /* _SPARC_TLB_H */
> diff --git a/arch/sparc/include/asm/tlb_64.h b/arch/sparc/include/asm/tlb_64.h
> index 3037187482db7..1a6e694418e39 100644
> --- a/arch/sparc/include/asm/tlb_64.h
> +++ b/arch/sparc/include/asm/tlb_64.h
> @@ -33,6 +33,7 @@ void flush_tlb_pending(void);
>  #define tlb_needs_table_invalidate()	(false)
>  #endif
>  
> +#define __HAVE_ARCH_TLB_REMOVE_TABLE
>  #include <asm-generic/tlb.h>
>  
>  #endif /* _SPARC64_TLB_H */
LGTM. 


With the removal of the define for sparc32 in v5:

Acked-by: Andreas Larsson <andreas@...sler.com> # sparc

Thanks,
Andreas