From: Kees Cook <keescook@chromium.org>
To: "Luis R. Rodriguez" <mcgrof@kernel.org>
Cc: David Woodhouse <dwmw2@infradead.org>,
"H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"x86@kernel.org" <x86@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Andy Lutomirski <luto@amacapital.net>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Rusty Russell <rusty@rustcorp.com.au>,
David Vrabel <david.vrabel@citrix.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Michael Brown <mcb30@ipxe.org>, Juergen Gross <jgross@suse.com>,
Ming Lei <ming.lei@canonical.com>,
Greg KH <gregkh@linuxfoundation.org>,
Arnd Bergmann <arnd@arndb.de>,
linux-arch <linux-arch@vger.kernel.org>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
"benh@kernel.crashing.org" <benh@kernel.crashing.org>,
jbaron@akamai.com, "ananth@in.ibm.com" <ananth@in.ibm.com>,
anil.s.keshavamurthy@intel.com, David S
Subject: Re: [RFC v2 3/7] firmware: port built-in section to linker table
Date: Tue, 3 May 2016 10:21:37 -0700 [thread overview]
Message-ID: <CAGXu5jL9i38=yahifwC1GWeo4E3y66-eojBe6AmXWj6UvmK2sg@mail.gmail.com> (raw)
In-Reply-To: <CAB=NE6WnA-VDPPX7YfkrRZC=vMtpbq41wn9pkSy7OHBdGhgwFQ@mail.gmail.com>
On Tue, May 3, 2016 at 10:10 AM, Luis R. Rodriguez <mcgrof@kernel.org> wrote:
> On Tue, May 3, 2016 at 10:07 AM, Luis R. Rodriguez <mcgrof@suse.com> wrote:
>> Thanks! Can you confirm if any Android or Brillo builds are already using it?
>
> Also more importantly, any chance you can provide any technical
> reasons why initramfs cannot be used, or it was decided to not use it
> on these systems? It should help others in the future as well.
In Chrome OS, the kernels are built specifically for the hardware
they're going to be on, so an initramfs was seen as a needless
additional boot step. Since Chrome OS was heavily optimized for boot
speed, it was designed to not need the initramfs at all. This is
actually enforced by the read-only boot firmware, so there's no
trivial way to _start_ using an initramfs on (existing) Chrome OS
devices either.
-Kees
--
Kees Cook
Chrome OS & Brillo Security
next prev parent reply other threads:[~2016-05-03 17:21 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-19 13:45 [RFC v2 0/7] linux: add linker tables Luis R. Rodriguez
2016-02-19 13:45 ` [RFC v2 1/7] sections.h: add sections header to collect all section info Luis R. Rodriguez
2016-02-19 16:23 ` Greg KH
2016-02-19 20:06 ` Luis R. Rodriguez
2016-02-19 21:25 ` Greg KH
2016-02-19 21:59 ` Luis R. Rodriguez
2016-02-19 13:45 ` [RFC v2 2/7] tables.h: add linker table support Luis R. Rodriguez
2016-02-19 20:25 ` H. Peter Anvin
2016-02-19 21:48 ` Luis R. Rodriguez
2016-02-23 23:08 ` Luis R. Rodriguez
2016-02-23 23:22 ` H. Peter Anvin
2016-02-23 23:36 ` Luis R. Rodriguez
2016-02-24 0:06 ` H. Peter Anvin
2016-02-24 0:54 ` Luis R. Rodriguez
2016-02-19 20:33 ` H. Peter Anvin
2016-02-19 21:12 ` Luis R. Rodriguez
2016-02-19 13:45 ` [RFC v2 3/7] firmware: port built-in section to linker table Luis R. Rodriguez
2016-02-29 10:12 ` David Woodhouse
2016-02-29 18:56 ` Luis R. Rodriguez
2016-05-02 18:34 ` Kees Cook
2016-05-02 18:41 ` Greg KH
2016-05-03 17:08 ` Luis R. Rodriguez
2016-05-03 17:07 ` Luis R. Rodriguez
2016-05-03 17:10 ` Luis R. Rodriguez
2016-05-03 17:11 ` Luis R. Rodriguez
2016-05-03 17:21 ` Kees Cook [this message]
2016-05-03 18:12 ` Greg KH
2016-03-01 16:10 ` James Bottomley
2016-03-01 17:54 ` Luis R. Rodriguez
2016-04-29 19:24 ` Luis R. Rodriguez
2016-02-19 13:45 ` [RFC v2 4/7] asm/sections: add a generic push_section_tbl() Luis R. Rodriguez
2016-02-19 20:26 ` H. Peter Anvin
2016-02-19 21:06 ` Luis R. Rodriguez
2016-02-22 2:55 ` H. Peter Anvin
2016-02-26 14:56 ` Heiko Carstens
2016-05-20 19:53 ` Luis R. Rodriguez
2016-02-19 13:45 ` [RFC v2 5/7] jump_label: port __jump_table to linker tables Luis R. Rodriguez
2016-02-19 13:45 ` [RFC v2 6/7] dynamic_debug: port to use " Luis R. Rodriguez
2016-02-19 13:45 ` [RFC v2 7/7] kprobes: port to linker table Luis R. Rodriguez
2016-02-19 14:15 ` Russell King - ARM Linux
2016-02-19 14:55 ` Luis R. Rodriguez
2016-02-22 1:34 ` 平松雅巳 / HIRAMATU，MASAMI
2016-02-23 0:52 ` [Xen-devel] " Luis R. Rodriguez
2016-07-21 23:53 ` Luis R. Rodriguez
2016-02-19 20:16 ` [RFC v2 0/7] linux: add linker tables H. Peter Anvin
2016-02-19 21:19 ` Luis R. Rodriguez
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