Re: [PATCH v2 0/3] ARM ZSTD boot compression

From: Andreas Kemnade

Date: Sat Sep 12 2026 - 06:38:50 EST


On Fri, 28 Aug 2026 22:32:18 +0200
Andreas Kemnade <andreas@xxxxxxxxxxxx> wrote:

> Add ZSTD compression to still have a quite high compression but with
> not too much boot delay penality.
>
> Signed-off-by: Andreas Kemnade <andreas@xxxxxxxxxxxx>

Anything left for me to do here?

Regards,
Andreas
> ---
> Changes in v2:
> - rebased
> - practically rewritten 3/3 (and therefore changed author)
> - added more measurements
> - Link to v1: https://lore.kernel.org/lkml/ZDoDYh01GYjdwp63@probook/
>
> To: Russell King <linux@xxxxxxxxxxxxxxx>
> To: Nick Terrell <terrelln@xxxxxx>
> To: David Sterba <dsterba@xxxxxxxx>
> To: Nathan Chancellor <nathan@xxxxxxxxxx>
> To: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
> To: Bill Wendling <morbo@xxxxxxxxxx>
> To: Justin Stitt <justinstitt@xxxxxxxxxx>
> Cc: j.neuschaefer@xxxxxxx
> Cc: f.fainelli@xxxxxxxxx
> Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
> Cc: Tony Lindgren <tony@xxxxxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
>
> ---
> Andreas Kemnade (1):
> ARM: compressed: Enable ZSTD compression
>
> Jonathan Neuschäfer (2):
> ARM: compressed: Pass the actual output length to the decompressor
> ARM: compressed: Bump MALLOC_SIZE to 128 KiB
>
> arch/arm/Kconfig | 1 +
> arch/arm/boot/compressed/Makefile | 3 ++-
> arch/arm/boot/compressed/decompress.c | 15 ++++++++++++---
> arch/arm/boot/compressed/head.S | 4 ++--
> arch/arm/boot/compressed/misc.c | 10 +++++++++-
> arch/arm/boot/compressed/misc.h | 3 ++-
> 6 files changed, 28 insertions(+), 8 deletions(-)
> ---
> base-commit: 8d3ae59288f1e7d58d76558a6ee96d533bc5019f
> change-id: 20260828-zstd2-045ce924f624
>
> Best regards,
> --
> Andreas Kemnade <andreas@xxxxxxxxxxxx>
>
>