linux-kernel - Re: [PATCH] arm64: Add KRYO4XX gold CPU core to spectre-v2 safe list

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Message-ID: <961724681d6d3f8c37a4e3c8facbdea3@kernel.org>
Date:   Fri, 14 Aug 2020 09:17:08 +0100
From:   Marc Zyngier <maz@...nel.org>
To:     Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Cc:     Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Andre Przywara <andre.przywara@....com>,
        Mark Rutland <mark.rutland@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Stephen Boyd <swboyd@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] arm64: Add KRYO4XX gold CPU core to spectre-v2 safe list

On 2020-08-14 05:34, Sai Prakash Ranjan wrote:
> On 2020-08-13 23:29, Marc Zyngier wrote:

[...]

>> We'd need to disable the late onlining of CPUs that would change
>> the mitigation state, and this is... ugly.
>> 
> 
> Ugh, yes indeed and here I was thinking that these things are 
> straightforward :(

It never is. Big-little is a broken concept. I'll try and think of
something next week, as I'm pretty swamped at the moment.

         M.
-- 
Jazz is not dead. It just smells funny...