linux-kernel - Re: [RFC][PATCH 6/6] x86/entry: Remove DBn stacks

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Date:   Fri, 29 May 2020 00:37:46 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Lai Jiangshan <jiangshanlai+lkml@...il.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Andy Lutomirski <luto@...capital.net>,
        LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
        Lai Jiangshan <laijs@...ux.alibaba.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        andrew.cooper3@...rix.com, daniel.thompson@...aro.org
Subject: Re: [RFC][PATCH 6/6] x86/entry: Remove DBn stacks

On Fri, May 29, 2020 at 06:35:07AM +0800, Lai Jiangshan wrote:
> There will be a compile error about N_EXCEPTION_STACKS
> in arch/x86/kernel/dumpstack_64.c. It should have
> 
> - BUILD_BUG_ON(N_EXCEPTION_STACKS != 6);
> + BUILD_BUG_ON(N_EXCEPTION_STACKS != 4);

Yeah, I actually have that, but forgot to refresh before sending :/