linux-kernel - Re: [PATCH -fixes 2/2] riscv: Do not set initial_boot

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Date:   Wed, 29 Mar 2023 09:14:44 +0100
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     Alexandre Ghiti <alex@...ti.fr>
CC:     Alexandre Ghiti <alexghiti@...osinc.com>,
        Jonathan Corbet <corbet@....net>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>, <linux-doc@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -fixes 2/2] riscv: Do not set initial_boot_params to the
 linear address of the dtb

On Wed, Mar 29, 2023 at 10:09:13AM +0200, Alexandre Ghiti wrote:
> On 3/27/23 13:16, Conor Dooley wrote:
> > On Thu, Mar 23, 2023 at 05:33:47PM +0100, Alexandre Ghiti wrote:
> > > diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
> > > index 542eed85ad2c..a059b73f4ddb 100644
> > > --- a/arch/riscv/kernel/setup.c
> > > +++ b/arch/riscv/kernel/setup.c
> > > @@ -278,10 +278,7 @@ void __init setup_arch(char **cmdline_p)
> > >   #if IS_ENABLED(CONFIG_BUILTIN_DTB)
> > >   	unflatten_and_copy_device_tree();
> > >   #else
> > > -	if (early_init_dt_verify(__va(XIP_FIXUP(dtb_early_pa))))
> 
> > btw, how come it is safe now to drop this? This feels like a separate
> > change that should be its own commit, no?
> 
> 
> It is safe because early_init_dt_verify is already called in parse_dtb and

Yah, that's what I figured. Cool.

> since the dtb address does not change anymore, no need to reset
> initial_boot_params. So I'll split this one, thanks.

Worth noting the point at which this became redundant in your commit
message when you do.

Thanks,
Conor.


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