linux-kernel - Re: [PATCH v3 0/8] Add Sipeed Lichee Pi 4A RISC-V board support

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Message-ID: <a4e5c82728d053b6888fdb6870ec69bd83cb6405.camel@linuxfromscratch.org>
Date:   Sat, 29 Jul 2023 15:11:27 +0800
From:   Xi Ruoyao <xry111@...uxfromscratch.org>
To:     Drew Fustini <dfustini@...libre.com>,
        Emil Renner Berthing <emil.renner.berthing@...onical.com>
Cc:     Jisheng Zhang <jszhang@...nel.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Guo Ren <guoren@...nel.org>, Fu Wei <wefu@...hat.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v3 0/8] Add Sipeed Lichee Pi 4A RISC-V board support

On Fri, 2023-07-28 at 10:53 -0700, Drew Fustini wrote:
> On Fri, Jul 28, 2023 at 12:23:12PM +0200, Emil Renner Berthing wrote:
> > On Fri, 28 Jul 2023 at 12:07, Xi Ruoyao <xry111@...uxfromscratch.org> wrote:
> > > 
> > > On Fri, 2023-07-28 at 15:40 +0800, Xi Ruoyao wrote:
> > > > On Fri, 2023-07-28 at 00:04 -0700, Drew Fustini wrote:
> > > > > It seems like your kernel config is the problem. I used it and I saw
> > > > > the same result of a panic in riscv_intc_irq:
> > > > > https://gist.github.com/pdp7/1a26ebe20017a3b90c4e9c005f8178e1
> > > > > 
> > > > > This is the config I have been using successfully:
> > > > > https://gist.github.com/pdp7/ecb34ba1e93fc6cfc4dce66d71e14f82
> > > > > 
> > > > > Could you try that config?
> > > > > 
> > > > > Linux 6.5-rc3 boots okay when built with it:
> > > > > https://gist.github.com/pdp7/580b072f9a5bf9be87cf88b5f81e50e3
> > > > 
> > > > Yes, your configuration works.
> > > > 
> > > > I'll try to figure out which specific configuration item is problematic
> > > > in my origin one...
> > > 
> > > Ah, I found it... If I deselect CONFIG_FRAME_POINTER it will crash.
> > > 
> > > And I see RISC-V selects ARCH_WANT_FRAME_POINTERS, so it seems frame
> > > pointer is mandated.  But then why I'm able to deselect
> > > CONFIG_FRAME_POINTER?
> > 
> > You've probably run into this issue:
> > https://lore.kernel.org/linux-riscv/20230716001506.3506041-1-guoren@kernel.org/
> > 
> > Try applying those two patches.
> > 
> > /Emil
> 
> Thanks, I think that fixes the issue with CONFIG_FRAME_POINTER=n. I had
> the same kernel crash [1] when trying the config from Xi [2].
> 
> I just did 'b4 shazam 20230716001506.3506041-1-guoren@...nel.org' and
> the riscv_intc_irq panic no longer occurs [3]. I don't have the mmc
> patches applied on this branch so the boot just hangs at mounting rootfs
> but I think it is otherwise okay.

Again thanks for your help!  I'm looking forward to your MMC driver :).

> [1] https://gist.github.com/pdp7/1a26ebe20017a3b90c4e9c005f8178e1
> [2] https://gist.github.com/pdp7/c6e358be892d506826be304dcc346a7a
> [3] https://gist.github.com/pdp7/871ada434febeca4ff93f2381352c038