Re: [PATCH 0/3] Fully support 47-bit physical addresses.

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Hi,
David Miller wrote:	[Sat Sep 28 2013, 03:34:12PM EDT]
> From: Gurudas Pai <gurudas.pai@xxxxxxxxxx>
> Date: Fri, 27 Sep 2013 21:07:11 -0700
> 
> > This is on a t4-1, machine becomes unusable with hundreds of
> > "WARNING: CPU: 0 PID: 441 at mm/mmap.c:2729 exit_mmap+0x14c/0x160()"
> 
> Strange, it boots perfectly fine on my T4-2.  Can you reply to
> this email with the ".config" you used?
> 
> Also, did you make sure to have the PAGE_OFFSET patches applied
> first?  They are a prerequisite for this series.
> 
> Thanks.
It seems to be the forever confusing MMU hole. Debian wheezy has no issue with
the patch below.

thanx,

bob

 arch/sparc/include/asm/page_64.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/sparc/include/asm/page_64.h b/arch/sparc/include/asm/page_64.h
index 2a6c45a..65d0ded 100644
--- a/arch/sparc/include/asm/page_64.h
+++ b/arch/sparc/include/asm/page_64.h
@@ -101,7 +101,7 @@ typedef pte_t *pgtable_t;
  * the actual exclusion region we enforce, wherein we use a 4GB red
  * zone on each side of the VA hole.
  */
-#define SPARC64_VA_HOLE_TOP	_AC(0xfffff80000000000,UL)
+#define SPARC64_VA_HOLE_TOP	_AC(0xfffffc0000000000,UL)
 #define SPARC64_VA_HOLE_BOTTOM	_AC(0x0000080000000000,UL)
 
 #define VA_EXCLUDE_START (SPARC64_VA_HOLE_BOTTOM - (1UL << 32UL))
--
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