Re: [PATCH 1/2] m68k/nommu: add missing definition of ARCH_PFN_OFFSET

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On 15/2/23 00:07, Mike Rapoport wrote:
From: "Mike Rapoport (IBM)" <rppt@xxxxxxxxxx>

On m68k/nommu RAM does not necessarily start at 0x0 and when it does not
pfn_valid() uses a wrong offset into the memory map which causes silent
boot failures.

Define ARCH_PFN_OFFSET to make pfn_valid() use the correct offset.

Reported-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Fixes: d82f07f06cf8 ("m68k: use asm-generic/memory_model.h for both MMU and !MMU")
Signed-off-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>

Acked-by: Greg Ungerer <gerg@xxxxxxxxxxxxxx>

  arch/m68k/include/asm/page_no.h | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/arch/m68k/include/asm/page_no.h b/arch/m68k/include/asm/page_no.h
index 43ff6b109ebb..060e4c0e7605 100644
--- a/arch/m68k/include/asm/page_no.h
+++ b/arch/m68k/include/asm/page_no.h
@@ -28,6 +28,8 @@ extern unsigned long memory_end;
  #define	virt_addr_valid(kaddr)	(((unsigned long)(kaddr) >= PAGE_OFFSET) && \
  				((unsigned long)(kaddr) < memory_end))
  #endif /* __ASSEMBLY__ */
#endif /* _M68K_PAGE_NO_H */

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