From: Ingo Molnar <mingo@elte.hu>
Date: Fri, 13 Feb 2009 12:09:00 +0000 (+0100)
Subject: Merge branch 'x86/untangle2' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy... 
X-Git-Tag: firefly_0821_release~14004^2~37^2~2^4~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b233969eaa98c7b339d955fe25a58bf6bf25739a;p=firefly-linux-kernel-4.4.55.git

Merge branch 'x86/untangle2' of git://git./linux/kernel/git/jeremy/xen into x86/headers

Conflicts:
	arch/x86/include/asm/page.h
	arch/x86/include/asm/pgtable.h
	arch/x86/mach-voyager/voyager_smp.c
	arch/x86/mm/fault.c
---

b233969eaa98c7b339d955fe25a58bf6bf25739a
diff --cc arch/x86/include/asm/page_types.h
index 000000000000,9f0c95963358..2c52ff767584
mode 000000,100644..100644
--- a/arch/x86/include/asm/page_types.h
+++ b/arch/x86/include/asm/page_types.h
@@@ -1,0 -1,64 +1,63 @@@
+ #ifndef _ASM_X86_PAGE_DEFS_H
+ #define _ASM_X86_PAGE_DEFS_H
+ 
+ #include <linux/const.h>
+ 
+ /* PAGE_SHIFT determines the page size */
+ #define PAGE_SHIFT	12
+ #define PAGE_SIZE	(_AC(1,UL) << PAGE_SHIFT)
+ #define PAGE_MASK	(~(PAGE_SIZE-1))
+ 
+ #define __PHYSICAL_MASK		((phys_addr_t)(1ULL << __PHYSICAL_MASK_SHIFT) - 1)
+ #define __VIRTUAL_MASK		((1UL << __VIRTUAL_MASK_SHIFT) - 1)
+ 
+ /* Cast PAGE_MASK to a signed type so that it is sign-extended if
+    virtual addresses are 32-bits but physical addresses are larger
+    (ie, 32-bit PAE). */
+ #define PHYSICAL_PAGE_MASK	(((signed long)PAGE_MASK) & __PHYSICAL_MASK)
+ 
+ /* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */
+ #define PTE_PFN_MASK		((pteval_t)PHYSICAL_PAGE_MASK)
+ 
+ /* PTE_FLAGS_MASK extracts the flags from a (pte|pmd|pud|pgd)val_t */
+ #define PTE_FLAGS_MASK		(~PTE_PFN_MASK)
+ 
+ #define PMD_PAGE_SIZE		(_AC(1, UL) << PMD_SHIFT)
+ #define PMD_PAGE_MASK		(~(PMD_PAGE_SIZE-1))
+ 
+ #define HPAGE_SHIFT		PMD_SHIFT
+ #define HPAGE_SIZE		(_AC(1,UL) << HPAGE_SHIFT)
+ #define HPAGE_MASK		(~(HPAGE_SIZE - 1))
+ #define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
+ 
+ #define HUGE_MAX_HSTATE 2
+ 
+ #define PAGE_OFFSET		((unsigned long)__PAGE_OFFSET)
+ 
+ #define VM_DATA_DEFAULT_FLAGS \
+ 	(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
+ 	 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+ 
+ #ifdef CONFIG_X86_64
+ #include <asm/page_64_types.h>
+ #else
+ #include <asm/page_32_types.h>
+ #endif	/* CONFIG_X86_64 */
+ 
+ #ifndef __ASSEMBLY__
+ 
+ struct pgprot;
+ 
+ extern int page_is_ram(unsigned long pagenr);
 -extern int pagerange_is_ram(unsigned long start, unsigned long end);
+ extern int devmem_is_allowed(unsigned long pagenr);
+ extern void map_devmem(unsigned long pfn, unsigned long size,
+ 		       struct pgprot vma_prot);
+ extern void unmap_devmem(unsigned long pfn, unsigned long size,
+ 			 struct pgprot vma_prot);
+ 
+ extern unsigned long max_low_pfn_mapped;
+ extern unsigned long max_pfn_mapped;
+ 
+ #endif	/* !__ASSEMBLY__ */
+ 
+ #endif	/* _ASM_X86_PAGE_DEFS_H */
diff --cc arch/x86/include/asm/pgtable.h
index 8fef0f6bfbb6,b0d1066ab6a5..62024ff897d9
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@@ -316,26 -216,10 +216,24 @@@ static inline pte_t pte_mkspecial(pte_
  	return pte_set_flags(pte, _PAGE_SPECIAL);
  }
  
- extern pteval_t __supported_pte_mask;
- 
 +/*
 + * Mask out unsupported bits in a present pgprot.  Non-present pgprots
 + * can use those bits for other purposes, so leave them be.
 + */
 +static inline pgprotval_t massage_pgprot(pgprot_t pgprot)
 +{
 +	pgprotval_t protval = pgprot_val(pgprot);
 +
 +	if (protval & _PAGE_PRESENT)
 +		protval &= __supported_pte_mask;
 +
 +	return protval;
 +}
 +
  static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
  {
 -	return __pte((((phys_addr_t)page_nr << PAGE_SHIFT) |
 -		      pgprot_val(pgprot)) & __supported_pte_mask);
 +	return __pte(((phys_addr_t)page_nr << PAGE_SHIFT) |
 +		     massage_pgprot(pgprot));
  }
  
  static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot)
diff --cc arch/x86/mm/fault.c
index 94c4e7262197,976b5a72ec30..29644175490f
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@@ -851,7 -848,8 +851,8 @@@ void __kprobes do_page_fault(struct pt_
  		return;
  	}
  
+ 	/* kprobes don't want to hook the spurious faults. */
 -	if (notify_page_fault(regs))
 +	if (unlikely(notify_page_fault(regs)))
  		return;
  	/*
  	 * It's safe to allow irq's after cr2 has been saved and the