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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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sh: Fix fallout from ZERO_PAGE consolidation

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@linutronix.de>
Tested-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Fixes: 6215d9f4470f ("arch, mm: consolidate empty_zero_page")
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>

authored by

Mike Rapoport (Microsoft) and committed by
John Paul Adrian Glaubitz b0aa5e4b 254f4963

+1 -1
+1 -1
arch/sh/include/asm/setup.h
··· 7 7 /* 8 8 * This is set up by the setup-routine at boot-time 9 9 */ 10 - extern unsigned char *boot_params_page; 10 + extern unsigned char boot_params_page[]; 11 11 #define PARAM boot_params_page 12 12 13 13 #define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000))