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    Subject[PATCH] [5/36] CPA: Implement change_page_attr_addr entry point for i386
    Date

    Similar to 64bit.

    Needed by PAT patches. Replaces 5ec5c5a2302ca8794da03f8bedec931a2a814ae9

    Note: should probably be put before PAT patches to avoid bisect failures later

    Signed-off-by: Andi Kleen <ak@suse.de>

    ---
    arch/x86/mm/pageattr_32.c | 15 +++++++++++++++
    1 file changed, 15 insertions(+)

    Index: linux/arch/x86/mm/pageattr_32.c
    ===================================================================
    --- linux.orig/arch/x86/mm/pageattr_32.c
    +++ linux/arch/x86/mm/pageattr_32.c
    @@ -233,6 +233,21 @@ int change_page_attr(struct page *page,
    return err;
    }

    +int change_page_attr_addr(unsigned long addr, int numpages, pgprot_t prot)
    +{
    + int i;
    + unsigned long pfn = (addr >> PAGE_SHIFT);
    + for (i = 0; i < numpages; i++) {
    + if (!pfn_valid(pfn + i)) {
    + break;
    + } else {
    + pte_t *pte = lookup_address(addr + i*PAGE_SIZE);
    + BUG_ON(pte && !pte_none(*pte));
    + }
    + }
    + return change_page_attr(virt_to_page(addr), i, prot);
    +}
    +
    void global_flush_tlb(void)
    {
    struct list_head l;

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