Re: [PATCH 16/21] ARM: dma-mapping: bring back dmac_{clean,inv}_range

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

To: Arnd Bergmann <arnd@xxxxxxxxxx>
Subject: Re: [PATCH 16/21] ARM: dma-mapping: bring back dmac_{clean,inv}_range
From: "Russell King (Oracle)" <linux@xxxxxxxxxxxxxxx>
Date: Mon, 27 Mar 2023 14:10:32 +0100
Cc: linux-kernel@xxxxxxxxxxxxxxx, Arnd Bergmann <arnd@xxxxxxxx>, Vineet Gupta <vgupta@xxxxxxxxxx>, Neil Armstrong <neil.armstrong@xxxxxxxxxx>, Linus Walleij <linus.walleij@xxxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Guo Ren <guoren@xxxxxxxxxx>, Brian Cain <bcain@xxxxxxxxxxx>, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, Michal Simek <monstr@xxxxxxxxx>, Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>, Dinh Nguyen <dinguyen@xxxxxxxxxx>, Stafford Horne <shorne@xxxxxxxxx>, Helge Deller <deller@xxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Christophe Leroy <christophe.leroy@xxxxxxxxxx>, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, Rich Felker <dalias@xxxxxxxx>, John Paul Adrian Glaubitz <glaubitz@xxxxxxxxxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Max Filippov <jcmvbkbc@xxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>, Conor Dooley <conor.dooley@xxxxxxxxxxxxx>, linux-snps-arc@xxxxxxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-oxnas@xxxxxxxxx, linux-csky@xxxxxxxxxxxxxxx, linux-hexagon@xxxxxxxxxxxxxxx, linux-m68k@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linux-openrisc@xxxxxxxxxxxxxxx, linux-parisc@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-sh@xxxxxxxxxxxxxxx, sparclinux@xxxxxxxxxxxxxxx, linux-xtensa@xxxxxxxxxxxxxxxx
In-reply-to: <20230327121317.4081816-17-arnd@kernel.org>
References: <20230327121317.4081816-1-arnd@kernel.org> <20230327121317.4081816-17-arnd@kernel.org>

On Mon, Mar 27, 2023 at 02:13:12PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> These were remove ages ago in commit 702b94bff3c5 ("ARM: dma-mapping:
> remove dmac_clean_range and dmac_inv_range") in an effort to sanitize
> the dma-mapping API.

Really no, please no. Let's not go back to this, let's keep the
buffer ownership model that came at around that time.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!

References:
- [PATCH 00/21] dma-mapping: unify support for cache flushes
  - From: Arnd Bergmann
- [PATCH 16/21] ARM: dma-mapping: bring back dmac_{clean,inv}_range
  - From: Arnd Bergmann

Prev by Date: Re: [PATCH 06/21] powerpc: dma-mapping: minimize for_cpu flushing
Next by Date: Re: [PATCH 10/21] csky: dma-mapping: skip invalidating before DMA from device
Previous by thread: [PATCH 16/21] ARM: dma-mapping: bring back dmac_{clean,inv}_range
Next by thread: [PATCH 17/21] ARM: dma-mapping: use arch_sync_dma_for_{device,cpu}() internally
Index(es):
- Date
- Thread

[Index of Archives] [Kernel Development] [DCCP] [Linux ARM Development] [Linux] [Photo] [Yosemite Help] [Linux ARM Kernel] [Linux SCSI] [Linux x86_64] [Linux Hams]