Re: [PATCH] sh: fix fallout from ZERO_PAGE consolidation

[John Paul Adrian Glaubitz]

Hi,

On Tue, 2026-04-28 at 14:18 +0200, Geert Uytterhoeven wrote:
> Hi Mike,
> 
> On Fri, 17 Apr 2026 at 21:16, Mike Rapoport <rppt@xxxxxxxxxx> wrote:
> > From: "Mike Rapoport (Microsoft)" <rppt@xxxxxxxxxx>
> > 
> > Consolidation of empty_zero_page declarations broke boot on sh.
> > 
> > sh stores its initial boot parameters in a page reserved in
> > arch/sh/kernel/head_32.S. Before commit 6215d9f4470f ("arch, mm:
> > consolidate empty_zero_page") this page was referenced in C code as an
> > array and after that commit it is referenced as a pointer.
> > 
> > This causes wrong code generation and boot hang.
> > 
> > Declare boot_params_page as an array to fix the issue.
> > 
> > Reported-by: Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>
> > Tested-by: Thomas Weißschuh <thomas.weissschuh@xxxxxxxxxxxxx>
> > Fixes: 6215d9f4470f ("arch, mm: consolidate empty_zero_page")
> > Signed-off-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>
> 
> Thanks, this fixes booting on Landisk and QEMU rts7751r2d.
> 
> Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

I'm going to pick this up later this week. I just wanted to give it a spin myself.

Adrian

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