Messages in this thread Patch in this message | | | From | steve@digidesc ... | Subject | [PATCH] microblaze: Fix pfn_valid() for noMMU | Date | Fri, 13 Nov 2009 16:08:29 -0600 |
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Configuring DEBUG_SLAB causes a noMMU kernel to die during initialization with an invalid virtual address panic in kfree_debugcheck(). The panic is due to an improper definition of pfn_valid().
Signed-off-by: Steven J. Magnani <steve@digidescorp.com> --- diff -uprN a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h --- a/arch/microblaze/include/asm/page.h 2009-09-09 17:13:59.000000000 -0500 +++ b/arch/microblaze/include/asm/page.h 2009-11-13 15:20:26.000000000 -0600 @@ -161,7 +161,8 @@ extern int page_is_ram(unsigned long pfn # endif /* CONFIG_MMU */ # ifndef CONFIG_MMU -# define pfn_valid(pfn) ((pfn) >= min_low_pfn && (pfn) <= max_mapnr) +# define pfn_valid(pfn) (((pfn) >= min_low_pfn) && \ + ((pfn) <= (min_low_pfn + max_mapnr))) # define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT) # else /* CONFIG_MMU */ # define ARCH_PFN_OFFSET (memory_start >> PAGE_SHIFT)
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