linux-kernel - Re: [PATCH 4/4] riscv: enable HAVE_LD_DEAD_CODE_DATA

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Message-ID: <ZF5do/iNVntdl3s7@xhacker>
Date:   Fri, 12 May 2023 23:39:15 +0800
From:   Jisheng Zhang <jszhang@...nel.org>
To:     Conor Dooley <conor@...nel.org>
Cc:     Conor Dooley <conor.dooley@...rochip.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Arnd Bergmann <arnd@...db.de>, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH 4/4] riscv: enable HAVE_LD_DEAD_CODE_DATA_ELIMINATION

On Fri, May 12, 2023 at 04:16:31PM +0100, Conor Dooley wrote:
> On Fri, May 12, 2023 at 02:58:49PM +0100, Conor Dooley wrote:
> > On Thu, May 11, 2023 at 10:12:11PM +0800, Jisheng Zhang wrote:
> > 
> > > diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S
> > > index e5f9f4677bbf..492dd4b8f3d6 100644
> > > --- a/arch/riscv/kernel/vmlinux.lds.S
> > > +++ b/arch/riscv/kernel/vmlinux.lds.S
> > > @@ -85,11 +85,11 @@ SECTIONS
> > >  	INIT_DATA_SECTION(16)
> > >  
> > >  	.init.pi : {
> > > -		*(.init.pi*)
> > > +		KEEP(*(.init.pi*))
> > >  	}
> > 
> > This section no longer exists in v6.4-rc1, it is now:
> > 	/* Those sections result from the compilation of kernel/pi/string.c */
> > 	.init.pidata : {
> > 		*(.init.srodata.cst8*)
> > 		*(.init__bug_table*)
> > 		*(.init.sdata*)
> > 	}
> 
> Ahh, I see what has happened. This series was made on top of
> riscv/fixes, but none of the patches are marked as a fix, leading to the

I need to touch the sections, and there's a fix in Palmer's tree which
will rename the section name, so rebased on the fix HEAD.

> automation testing this as new content.
> 
> Sorry for the noise on this patch.

Thank you for your review.