From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Christian Eggers <ceggers@arri.de>
Cc: Ard Biesheuvel <ardb@kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
llvm@lists.linux.dev, Nathan Chancellor <nathan@kernel.org>
Subject: Re: CONFIG_THUMB2_KERNEL=y boot failure after Spectre BHB fixes
Date: Wed, 30 Mar 2022 19:45:15 +0100 [thread overview]
Message-ID: <YkSlO4BOyQv9uTyd@shell.armlinux.org.uk> (raw)
In-Reply-To: <1896453.PYKUYFuaPT@localhost.localdomain>
On Wed, Mar 30, 2022 at 08:27:56PM +0200, Christian Eggers wrote:
> On Wednesday, 30 March 2022, 19:42:31 CEST, Ard Biesheuvel wrote:
> > Thanks for confirming. The first fix affects all Thumb2
> > configurations, my patch only affects Thumb2 configurations that
> > actually enable the loop8 mitigation for Spectre-BHB.
> >
> > What type of CPU are you booting on?
>
> NXP i.MX6ULL (ARM Cortex-A7).
As Cortex-A7 is not listed in Arm Ltd's table for speculative processor
vulnerabilities, the kernel doesn't implement any workarounds.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
WARNING: multiple messages have this Message-ID (diff)
From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Christian Eggers <ceggers@arri.de>
Cc: Ard Biesheuvel <ardb@kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
llvm@lists.linux.dev, Nathan Chancellor <nathan@kernel.org>
Subject: Re: CONFIG_THUMB2_KERNEL=y boot failure after Spectre BHB fixes
Date: Wed, 30 Mar 2022 19:45:15 +0100 [thread overview]
Message-ID: <YkSlO4BOyQv9uTyd@shell.armlinux.org.uk> (raw)
In-Reply-To: <1896453.PYKUYFuaPT@localhost.localdomain>
On Wed, Mar 30, 2022 at 08:27:56PM +0200, Christian Eggers wrote:
> On Wednesday, 30 March 2022, 19:42:31 CEST, Ard Biesheuvel wrote:
> > Thanks for confirming. The first fix affects all Thumb2
> > configurations, my patch only affects Thumb2 configurations that
> > actually enable the loop8 mitigation for Spectre-BHB.
> >
> > What type of CPU are you booting on?
>
> NXP i.MX6ULL (ARM Cortex-A7).
As Cortex-A7 is not listed in Arm Ltd's table for speculative processor
vulnerabilities, the kernel doesn't implement any workarounds.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-03-30 18:45 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-10 19:16 CONFIG_THUMB2_KERNEL=y boot failure after Spectre BHB fixes Nathan Chancellor
2022-03-10 19:16 ` Nathan Chancellor
2022-03-22 17:49 ` Christian Eggers
2022-03-22 17:49 ` Christian Eggers
2022-03-30 16:11 ` Russell King (Oracle)
2022-03-30 16:11 ` Russell King (Oracle)
2022-03-30 16:34 ` Ard Biesheuvel
2022-03-30 16:34 ` Ard Biesheuvel
2022-03-30 16:36 ` Russell King (Oracle)
2022-03-30 16:36 ` Russell King (Oracle)
2022-03-30 16:45 ` Ard Biesheuvel
2022-03-30 16:45 ` Ard Biesheuvel
2022-03-30 17:32 ` Christian Eggers
2022-03-30 17:32 ` Christian Eggers
2022-03-30 17:42 ` Ard Biesheuvel
2022-03-30 17:42 ` Ard Biesheuvel
2022-03-30 18:27 ` Christian Eggers
2022-03-30 18:27 ` Christian Eggers
2022-03-30 18:45 ` Russell King (Oracle) [this message]
2022-03-30 18:45 ` Russell King (Oracle)
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