From: Russell King - ARM Linux <linux@armlinux.org.uk>
To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
'Linux Samsung SOC' <linux-samsung-soc@vger.kernel.org>,
Julien Thierry <julien.thierry@arm.com>,
Marc Zyngier <marc.zyngier@arm.com>,
Will Deacon <will.deacon@arm.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Morten Rasmussen <Morten.Rasmussen@arm.com>,
linux-arm-kernel@lists.infradead.org,
Qais Yousef <Qais.Yousef@arm.com>
Subject: Re: [PATCH 5/5] ARM: spectre-v2: per-CPU vtables to work around big.Little systems
Date: Fri, 5 Oct 2018 10:46:19 +0100 [thread overview]
Message-ID: <20181005094618.GG30658@n2100.armlinux.org.uk> (raw)
In-Reply-To: <20181005090941eucas1p14031cd38d78e9d561975925bf977727d~aq0-OFZeE1866318663eucas1p1b@eucas1p1.samsung.com>
On Fri, Oct 05, 2018 at 11:09:40AM +0200, Marek Szyprowski wrote:
> This patch causes lots of kernel 'BUG' messages on all Samsung Exynos
> boards. It started to appear since it has been merged to linux-next
> on 20181002. I wonder if this issue is Exynos specific or there are
> some patches missing in linux-next, which should fix those 'BUGS'.
> If this is Exynos specific, please let us know what should be changed
> in Exynos platform code to avoid this issue.
Thanks for the report.
It looks like my solution for big.Little isn't possible... back to
the drawing board, and big.Little will have to remain vulnerable to
Spectre for another release cycle.
--
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up
According to speedtest.net: 11.9Mbps down 500kbps up
WARNING: multiple messages have this Message-ID (diff)
From: linux@armlinux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 5/5] ARM: spectre-v2: per-CPU vtables to work around big.Little systems
Date: Fri, 5 Oct 2018 10:46:19 +0100 [thread overview]
Message-ID: <20181005094618.GG30658@n2100.armlinux.org.uk> (raw)
In-Reply-To: <20181005090941eucas1p14031cd38d78e9d561975925bf977727d~aq0-OFZeE1866318663eucas1p1b@eucas1p1.samsung.com>
On Fri, Oct 05, 2018 at 11:09:40AM +0200, Marek Szyprowski wrote:
> This patch causes lots of kernel 'BUG' messages on all Samsung Exynos
> boards.? It started to appear since it has been merged to linux-next
> on 20181002.? I wonder if this issue is Exynos specific or there are
> some patches missing in linux-next, which should fix those 'BUGS'.
> If this is Exynos specific, please let us know what should be changed
> in Exynos platform code to avoid this issue.
Thanks for the report.
It looks like my solution for big.Little isn't possible... back to
the drawing board, and big.Little will have to remain vulnerable to
Spectre for another release cycle.
--
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up
According to speedtest.net: 11.9Mbps down 500kbps up
next prev parent reply other threads:[~2018-10-05 9:46 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-19 9:48 [PATCH 0/5] Spectre big.Little updates Russell King - ARM Linux
2018-09-19 9:48 ` [PATCH 1/5] ARM: make lookup_processor_type() non-__init Russell King
2018-09-20 9:07 ` Julien Thierry
2018-09-19 9:48 ` [PATCH 2/5] ARM: split out processor lookup Russell King
2018-09-20 9:05 ` Julien Thierry
2018-09-19 9:49 ` [PATCH 3/5] ARM: clean up per-processor check_bugs method call Russell King
2018-09-20 9:06 ` Julien Thierry
2018-09-19 9:49 ` [PATCH 4/5] ARM: add PROC_VTABLE macro Russell King
2018-09-20 9:07 ` Julien Thierry
2018-09-19 9:49 ` [PATCH 5/5] ARM: spectre-v2: per-CPU vtables to work around big.Little systems Russell King
2018-09-20 9:04 ` Julien Thierry
2018-09-20 9:21 ` Russell King - ARM Linux
2018-09-20 9:28 ` Julien Thierry
2018-10-05 9:09 ` Marek Szyprowski
2018-10-05 9:09 ` Marek Szyprowski
2018-10-05 9:35 ` Krzysztof Kozlowski
2018-10-05 9:35 ` Krzysztof Kozlowski
2018-10-05 9:46 ` Russell King - ARM Linux [this message]
2018-10-05 9:46 ` Russell King - ARM Linux
2018-10-30 10:50 ` Russell King - ARM Linux
2018-10-30 10:50 ` Russell King - ARM Linux
2018-10-31 15:21 ` Marek Szyprowski
2018-10-31 15:21 ` Marek Szyprowski
2018-10-31 18:12 ` Russell King - ARM Linux
2018-10-31 18:12 ` Russell King - ARM Linux
2018-11-02 17:17 ` Kevin Hilman
2018-11-02 17:17 ` Kevin Hilman
Reply instructions:
You may reply publicly 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:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20181005094618.GG30658@n2100.armlinux.org.uk \
--to=linux@armlinux.org.uk \
--cc=Morten.Rasmussen@arm.com \
--cc=Qais.Yousef@arm.com \
--cc=dietmar.eggemann@arm.com \
--cc=julien.thierry@arm.com \
--cc=krzk@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-samsung-soc@vger.kernel.org \
--cc=m.szyprowski@samsung.com \
--cc=marc.zyngier@arm.com \
--cc=mark.rutland@arm.com \
--cc=will.deacon@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.