linux-kernel - Re: [PATCH v2] arm64: add the printing of tpidr_elx in __show

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Message-ID: <20220428102301.GB14123@willie-the-truck>
Date:   Thu, 28 Apr 2022 11:23:01 +0100
From:   Will Deacon <will@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>
Cc:     Zhen Lei <thunder.leizhen@...wei.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        James Morse <james.morse@....com>
Subject: Re: [PATCH v2] arm64: add the printing of tpidr_elx in __show_regs()

On Wed, Apr 27, 2022 at 07:40:15PM +0100, Catalin Marinas wrote:
> On Wed, 16 Mar 2022 14:24:08 +0800, Zhen Lei wrote:
> > Commit 7158627686f0 ("arm64: percpu: implement optimised pcpu access
> > using tpidr_el1") and commit 6d99b68933fb ("arm64: alternatives: use
> > tpidr_el2 on VHE hosts") use tpidr_elx to cache my_cpu_offset to optimize
> > pcpu access. However, when performing reverse execution based on the
> > registers and the memory contents in kdump, this information is sometimes
> > required if there is a pcpu access.
> > 
> > [...]
> 
> Applied to arm64 (for-next/misc), thanks!
> 
> [1/1] arm64: add the printing of tpidr_elx in __show_regs()
>       https://git.kernel.org/arm64/c/9ec393c812f2

heh, I wasn't expecting you to apply this, but also hadn't realised nobody
had reviewed it. I've replied with my concerns, so please can you drop it
for now?

Will