linux-kernel - Re: [RESEND PATCH v2 0/2] Add support for ZSTD-compressed kernel

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Message-ID: <20180322025848.dnymbsvpep45s3bg@angband.pl>
Date:   Thu, 22 Mar 2018 03:58:48 +0100
From:   Adam Borowski <kilobyte@...band.pl>
To:     Nick Terrell <terrelln@...com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
        x86@...nel.org, kernel-team@...com, Chris Mason <clm@...com>,
        Rene Rebe <rene@...ctcode.com>,
        Julian Andres Klode <julian.klode@...onical.com>,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [RESEND PATCH v2 0/2] Add support for ZSTD-compressed kernel

On Wed, Mar 21, 2018 at 06:29:41PM -0700, Nick Terrell wrote:
> This patch set adds support for a ZSTD-compressed kernel and ramdisk
> images in the kernel boot process. It only integrates the support with
> x86, though the first patch is generic to all architectures.

I'm running this patch set since October on amd64 armhf arm64, no
explosions -- besides the obvious when it's not applied yet I forget to
reconfigure initramfs-tools.  Which is getting tedious, so let's merge this
already. :)

I've tested initrd on all of these archs; here's a debug patch to check if
you're actually using it.

As for compressing the kernel itself: the second patch works as submitted
(ie, x86 only).  Porting it to other architectures is straightforward, but
eg. on arm, most boards use u-boot which insists on decompressing the kernel
by itself instead of passing control.  EFI/grub should work, but I haven't
tested that yet.

Meow!
-- 
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