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Commit 836fe2f2 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

xen: use set_pte_vaddr 



Make Xen's set_pte_mfn() use set_pte_vaddr rather than copying it.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: default avatarJuan Quintela <quintela@redhat.com>
Signed-off-by: default avatarMark McLoughlin <markmc@redhat.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 8745f8b0

arch/x86/xen/mmu.c

+1 −29
Original line number Diff line number Diff line
@@ -282,35 +282,7 @@ void xen_set_pmd(pmd_t *ptr, pmd_t val) 
 */

void set_pte_mfn(unsigned long vaddr, unsigned long mfn, pgprot_t flags)

{

	pgd_t *pgd;

	pud_t *pud;

	pmd_t *pmd;

	pte_t *pte;



	pgd = swapper_pg_dir + pgd_index(vaddr);

	if (pgd_none(*pgd)) {

		BUG();

		return;

	}

	pud = pud_offset(pgd, vaddr);

	if (pud_none(*pud)) {

		BUG();

		return;

	}

	pmd = pmd_offset(pud, vaddr);

	if (pmd_none(*pmd)) {

		BUG();

		return;

	}

	pte = pte_offset_kernel(pmd, vaddr);

	/* <mfn,flags> stored as-is, to permit clearing entries */

	xen_set_pte(pte, mfn_pte(mfn, flags));



	/*

	 * It's enough to flush this one mapping.

	 * (PGE mappings get flushed as well)

	 */

	__flush_tlb_one(vaddr);

	set_pte_vaddr(vaddr, mfn_pte(mfn, flags));

}



void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,