lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Message-ID: <CAMuHMdVq0ihLthVQF-2v4_E=m7jdOZty8b69eizJyWoU+0CFCw@mail.gmail.com> Date: Tue, 17 Oct 2023 10:40:32 +0200 From: Geert Uytterhoeven <geert@...ux-m68k.org> To: Christoph Hellwig <hch@....de> Cc: Greg Ungerer <gerg@...ux-m68k.org>, iommu@...ts.linux.dev, Paul Walmsley <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>, Conor Dooley <conor@...nel.org>, Magnus Damm <magnus.damm@...il.com>, Robin Murphy <robin.murphy@....com>, Marek Szyprowski <m.szyprowski@...sung.com>, Wei Fang <wei.fang@....com>, Shenwei Wang <shenwei.wang@....com>, Clark Wang <xiaoning.wang@....com>, NXP Linux Team <linux-imx@....com>, linux-m68k@...ts.linux-m68k.org, netdev@...r.kernel.org, linux-riscv@...ts.infradead.org, linux-renesas-soc@...r.kernel.org, Jim Quinlan <james.quinlan@...adcom.com> Subject: Re: [PATCH 09/12] m68k: use the coherent DMA code for coldfire without data cache On Mon, Oct 16, 2023 at 7:48 AM Christoph Hellwig <hch@....de> wrote: > Coldfire cores configured without a data cache are DMA coherent and > should thus simply use the simple coherent version of dma-direct. > > Introduce a new COLDFIRE_COHERENT_DMA Kconfig symbol as a convenient > short hand for such configurations, and a M68K_NONCOHERENT_DMA symbol > for all cases where we need to build non-coherent DMA infrastructure > to simplify the Kconfig and code conditionals. > > Not building the non-coherent DMA code slightly reduces the code > size for such configurations. > > Numers for m5249evb_defconfig below: > > text data bss dec hex filename > 2896158 401052 65392 3362602 334f2a vmlinux.before > 2895166 400988 65392 3361546 334b0a vmlinux.after > > Signed-off-by: Christoph Hellwig <hch@....de> The m68kclassic-with-MMU parts look fine to me, so Acked-by: Geert Uytterhoeven <geert@...ux-m68k.org> I'll defer to Greg for the nommu and Coldfire parts... Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
Powered by blists - more mailing lists