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Commit 26c8e317 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge
Browse files

x86: make pgd/pud/pmd/pte_none consistent 



The _none test is done differently for every level of the pagetable.
Standardize them by:

 1: Use the native_X_val to extract the raw entry, with no need to go
    via paravirt_ops, diff -r 1d0646d0d319 arch/x86/include/asm/pgtable.h, and
 2: Compare with 0 rather than using a boolean !, since they are actually values
    and not booleans.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
parent 18a7a199

arch/x86/include/asm/pgtable.h

+3 −3
Original line number Diff line number Diff line
@@ -465,7 +465,7 @@ static inline int pmd_none(pmd_t pmd) 
{

	/* Only check low word on 32-bit platforms, since it might be

	   out of sync with upper half. */

	return !(unsigned long)native_pmd_val(pmd);

	return (unsigned long)native_pmd_val(pmd) == 0;

}



static inline unsigned long pmd_page_vaddr(pmd_t pmd)
@@ -530,7 +530,7 @@ static inline unsigned long pages_to_mb(unsigned long npg) 
#if PAGETABLE_LEVELS > 2

static inline int pud_none(pud_t pud)

{

	return pud_val(pud) == 0;

	return native_pud_val(pud) == 0;

}



static inline int pud_present(pud_t pud)
@@ -605,7 +605,7 @@ static inline int pgd_bad(pgd_t pgd) 


static inline int pgd_none(pgd_t pgd)

{

	return !pgd_val(pgd);

	return !native_pgd_val(pgd);

}

#endif	/* PAGETABLE_LEVELS > 3 */