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    Subject[tip:x86/mm] x86, mm: Call is_untracked_pat_range() rather than is_ISA_range()
    Commit-ID:  55a6ca25472ee01574bfc24d23b7f5fa09cc38cf
    Gitweb: http://git.kernel.org/tip/55a6ca25472ee01574bfc24d23b7f5fa09cc38cf
    Author: H. Peter Anvin <hpa@zytor.com>
    AuthorDate: Mon, 23 Nov 2009 15:12:07 -0800
    Committer: H. Peter Anvin <hpa@zytor.com>
    CommitDate: Mon, 23 Nov 2009 17:09:59 -0800

    x86, mm: Call is_untracked_pat_range() rather than is_ISA_range()

    Checkin fd12a0d69aee6d90fa9b9890db24368a897f8423 made the PAT
    untracked range a platform configurable, but missed on occurrence of
    is_ISA_range() which still refers to PAT-untracked memory, and
    therefore should be using the configurable.

    Signed-off-by: H. Peter Anvin <hpa@zytor.com>
    Cc: Jack Steiner <steiner@sgi.com>
    Cc: Suresh Siddha <suresh.b.siddha@intel.com>
    LKML-Reference: <20091119202341.GA4420@sgi.com>
    ---
    arch/x86/include/asm/pgtable.h | 6 ++++--
    1 files changed, 4 insertions(+), 2 deletions(-)

    diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
    index af6fd36..1de2094 100644
    --- a/arch/x86/include/asm/pgtable.h
    +++ b/arch/x86/include/asm/pgtable.h
    @@ -16,6 +16,8 @@

    #ifndef __ASSEMBLY__

    +#include <asm/x86_init.h>
    +
    /*
    * ZERO_PAGE is a global shared page that is always zero: used
    * for zero-mapped memory areas etc..
    @@ -270,9 +272,9 @@ static inline int is_new_memtype_allowed(u64 paddr, unsigned long size,
    unsigned long new_flags)
    {
    /*
    - * PAT type is always WB for ISA. So no need to check.
    + * PAT type is always WB for untracked ranges, so no need to check.
    */
    - if (is_ISA_range(paddr, paddr + size - 1))
    + if (x86_platform.is_untracked_pat_range(paddr, paddr + size - 1))
    return 1;

    /*

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