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From: Ingo Molnar <mingo@kernel.org>
To: Randy Dunlap <rdunlap@infradead.org>
Cc: Nick Terrell <nickrterrell@gmail.com>,
	Borislav Petkov <bp@alien8.de>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-kernel@vger.kernel.org, Chris Mason <clm@fb.com>,
	linux-kbuild@vger.kernel.org, x86@kernel.org,
	gregkh@linuxfoundation.org, Petr Malat <oss@malat.biz>,
	Kees Cook <keescook@chromium.org>,
	Kernel Team <Kernel-team@fb.com>,
	Adam Borowski <kilobyte@angband.pl>,
	Patrick Williams <patrickw3@fb.com>,
	rmikey@fb.com, Patrick Williams <patrick@stwcx.xyz>,
	Sedat Dilek <sedat.dilek@gmail.com>,
	Norbert Lange <nolange79@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Alex Xu <alex_y_xu@yahoo.ca>,
	Arvind Sankar <nivedita@alum.mit.edu>,
	Nick Terrell <terrelln@fb.com>
Subject: Re: [PATCH v8 3/7] init: add support for zstd compressed kernel
Date: Fri, 24 Jul 2020 14:17:16 +0200	[thread overview]
Message-ID: <20200724121716.GB632343@gmail.com> (raw)
In-Reply-To: <9ff49261-f5fd-b8dd-949a-0b8eab75369b@infradead.org>


* Randy Dunlap <rdunlap@infradead.org> wrote:

> On 7/23/20 12:27 PM, Nick Terrell wrote:
> > +config KERNEL_ZSTD
> > +	bool "ZSTD"
> > +	depends on HAVE_KERNEL_ZSTD
> > +	help
> > +	  ZSTD is a compression algorithm targeting intermediate compression
> > +	  with fast decompression speed. It will compress better than GZIP and
> > +	  decompress around the same speed as LZO, but slower than LZ4. You
> > +	  will need at least 192 KB RAM or more for booting. The zstd command
> > +	  line tools is required for compression.
> 
> 	       tools are required

Since 'zstd' is the singular tool required for compression AFAICS:

   LZ4            = lz4c
   XZ             = xz
  +ZSTD           = zstd

"The zstd command line tool is required for compression" is the 
intended wording I'd say?

Thanks,

	Ingo

  reply	other threads:[~2020-07-24 12:17 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-23 19:27 [GIT PULL][PATCH v8 0/7] Add support for ZSTD-compressed kernel and initramfs Nick Terrell
2020-07-23 19:27 ` [PATCH v8 1/7] lib: prepare zstd for preboot environment Nick Terrell
2020-07-23 19:27 ` [PATCH v8 2/7] lib: add zstd support to decompress Nick Terrell
2020-07-24 12:12   ` Ingo Molnar
2020-07-23 19:27 ` [PATCH v8 3/7] init: add support for zstd compressed kernel Nick Terrell
2020-07-23 20:30   ` Randy Dunlap
2020-07-24 12:17     ` Ingo Molnar [this message]
2020-07-24 14:09       ` Randy Dunlap
2020-07-23 19:27 ` [PATCH v8 4/7] usr: add support for zstd compressed initramfs Nick Terrell
2020-07-23 19:27 ` [PATCH v8 5/7] x86: bump ZO_z_extra_bytes margin for zstd Nick Terrell
2020-07-23 19:28 ` [PATCH v8 6/7] x86: Add support for ZSTD compressed kernel Nick Terrell
2020-07-24  0:50   ` Sedat Dilek
2020-07-24 14:30     ` Arvind Sankar
2020-07-24 14:48       ` Sedat Dilek
2020-07-24 17:38         ` Arvind Sankar
2020-07-27 22:44       ` Nick Terrell
2020-07-24 12:26   ` Ingo Molnar
2020-07-24 13:46     ` Adam Borowski
2020-07-27 22:43     ` Nick Terrell
2020-07-23 19:28 ` [PATCH v8 7/7] .gitignore: add ZSTD-compressed files Nick Terrell
2020-07-24  0:49 ` [GIT PULL][PATCH v8 0/7] Add support for ZSTD-compressed kernel and initramfs Sedat Dilek

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