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Message-Id: <1258150109-6884-1-git-send-email-steve@digidescorp.com> Date: Fri, 13 Nov 2009 16:08:29 -0600 From: steve@...idescorp.com To: microblaze-uclinux@...e.uq.edu.au Cc: monstr@...str.eu, linux-kernel@...r.kernel.org, "Steven J. Magnani" <steve@...idescorp.com> Subject: [PATCH] microblaze: Fix pfn_valid() for noMMU 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@...idescorp.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) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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