Linux-ARM-Kernel Archive on
 help / color / Atom feed
From: Florian Fainelli <>
To: Florian Fainelli <>,
Cc: Doug Berger <>,, Russell King <>,
	open list <>,,,
	Julien Thierry <>
Subject: Re: [PATCH] ARM: spectre-v2: remove Brahma-B53 from hardening
Date: Sun, 10 Nov 2019 19:33:09 -0800
Message-ID: <> (raw)
In-Reply-To: <>

On 10/31/2019 3:00 PM, Florian Fainelli wrote:
> From: Doug Berger <>
> When the default processor handling was added to the function
> cpu_v7_spectre_init() it only excluded other ARM implemented processor
> cores. The Broadcom Brahma B53 core is not implemented by ARM so it
> ended up falling through into the set of processors that attempt to use
> the ARM_SMCCC_ARCH_WORKAROUND_1 service to harden the branch predictor.
> Since this workaround is not necessary for the Brahma-B53 this commit
> explicitly checks for it and prevents it from applying a branch
> predictor hardening workaround.
> Fixes: 10115105cb3a ("ARM: spectre-v2: add firmware based hardening")
> Signed-off-by: Doug Berger <>
> Signed-off-by: Florian Fainelli <>


linux-arm-kernel mailing list

      reply index

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-31 22:00 Florian Fainelli
2019-11-11  3:33 ` Florian Fainelli [this message]

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \ \ \ \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-ARM-Kernel Archive on

Archives are clonable:
	git clone --mirror linux-arm-kernel/git/0.git
	git clone --mirror linux-arm-kernel/git/1.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-arm-kernel linux-arm-kernel/ \
	public-inbox-index linux-arm-kernel

Example config snippet for mirrors

Newsgroup available over NNTP:

AGPL code for this site: git clone