From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 29 Oct 2012 01:52:39 +0000 (+1100)
Subject: Merge remote-tracking branch 'tip/auto-latest'
X-Git-Tag: next-20121029~34
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9b46987361d2b7965c9f372bb725feed97e5f9ae;p=karo-tx-linux.git

Merge remote-tracking branch 'tip/auto-latest'
---

9b46987361d2b7965c9f372bb725feed97e5f9ae
diff --cc arch/s390/include/asm/pgtable.h
index 0eefb9e192d1,b820ff1db35e..325a5d6ceabf
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@@ -1258,17 -1240,31 +1258,30 @@@ static inline void set_pmd_at(struct mm
  	*pmdp = entry;
  }
  
+ static inline pgprot_t pmd_pgprot(pmd_t pmd)
+ {
+ 	pgprot_t prot = PAGE_RW;
+ 
+ 	if (pmd_val(pmd) & _SEGMENT_ENTRY_RO) {
+ 		if (pmd_val(pmd) & _SEGMENT_ENTRY_INV)
+ 			prot = PAGE_NONE;
+ 		else
+ 			prot = PAGE_RO;
+ 	}
+ 	return prot;
+ }
+ 
  static inline unsigned long massage_pgprot_pmd(pgprot_t pgprot)
  {
 -	unsigned long pgprot_pmd = 0;
 -
 -	if (pgprot_val(pgprot) & _PAGE_INVALID) {
 -		if (pgprot_val(pgprot) & _PAGE_SWT)
 -			pgprot_pmd |= _HPAGE_TYPE_NONE;
 -		pgprot_pmd |= _SEGMENT_ENTRY_INV;
 -	}
 -	if (pgprot_val(pgprot) & _PAGE_RO)
 -		pgprot_pmd |= _SEGMENT_ENTRY_RO;
 -	return pgprot_pmd;
 +	/*
 +	 * pgprot is PAGE_NONE, PAGE_RO, or PAGE_RW (see __Pxxx / __Sxxx)
 +	 * Convert to segment table entry format.
 +	 */
 +	if (pgprot_val(pgprot) == pgprot_val(PAGE_NONE))
 +		return pgprot_val(SEGMENT_NONE);
 +	if (pgprot_val(pgprot) == pgprot_val(PAGE_RO))
 +		return pgprot_val(SEGMENT_RO);
 +	return pgprot_val(SEGMENT_RW);
  }
  
  static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)