From: Florian Fainelli <f.fainelli@gmail.com>
To: Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org
Cc: Mark Rutland <mark.rutland@arm.com>,
Rob Herring <robh@kernel.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Russell King <linux@armlinux.org.uk>,
open list <linux-kernel@vger.kernel.org>,
"maintainer:BROADCOM BCM7XXX ARM ARCHITECTURE"
<bcm-kernel-feedback-list@broadcom.com>,
Gregory Fong <gregory.0xf0@gmail.com>,
Doug Berger <opendmb@gmail.com>,
Brian Norris <computersforpeace@gmail.com>
Subject: Re: [PATCH 0/3] ARM/PSCI: Fix THUMB2_KERNEL entry points
Date: Fri, 28 Sep 2018 10:51:16 -0700 [thread overview]
Message-ID: <26239d41-0d58-43fd-89e9-1576c84f89f2@gmail.com> (raw)
In-Reply-To: <c68b01ab-9077-73cc-8356-25a4e3a909f0@arm.com>
On 09/28/2018 01:08 AM, Robin Murphy wrote:
> On 2018-09-27 8:27 PM, Florian Fainelli wrote:
>> Hi all,
>>
>> While playing with THUMB2_KERNEL on ARCH_BRCMSTB, several issues came up
>> which are addressed by these 3 patches.
>
> Hmmm, PSCI looks to explicitly support Thumb entrypoints ("T32 support"
> in section 6.4.3 of DEN0022D), so these changes smell a little of
> papering over a more fundamental problem, which is presumably either
> that Thumb symbols are not being resolved correctly, or that the
> firmware you're using has a bug.
Yes, I clearly missed that during the internal review of our
implementation and missed it again prior to submitting those patches,
shame on me.
The last patch is valid because it addresses a problem on 32-bit only
platforms which do not have a PSCI firmware at that point.
Thanks!
--
Florian
prev parent reply other threads:[~2018-09-28 17:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-27 19:27 Florian Fainelli
2018-09-27 19:27 ` [PATCH 1/3] firmware/psci: Fix cpu_resume entry points with THUMB2_KERNEL Florian Fainelli
2018-09-28 13:47 ` Mark Rutland
2018-09-28 17:50 ` Florian Fainelli
2018-09-27 19:27 ` [PATCH 2/3] ARM: psci: Fix secondary core boot " Florian Fainelli
2018-09-28 13:48 ` Mark Rutland
2018-09-27 19:27 ` [PATCH 3/3] soc: bcm: brcmstb: Fix re-entry point with a THUMB2_KERNEL Florian Fainelli
2018-10-01 18:17 ` Florian Fainelli
2018-09-28 8:08 ` [PATCH 0/3] ARM/PSCI: Fix THUMB2_KERNEL entry points Robin Murphy
2018-09-28 17:51 ` Florian Fainelli [this message]
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