Commit 9042219c authored by Eduardo Habkost's avatar Eduardo Habkost Committed by Ingo Molnar
Browse files

x86: include/asm-x86/paravirt.h: x86_64 mmu operations 



Add .set_pgd field to pv_mmu_ops.

Implement pud_val(), __pud(), set_pgd(), pud_clear(), pgd_clear().

pud_clear() and pgd_clear() are implemented simply using set_pud()
and set_pmd(). They don't have a field at pv_mmu_ops.

Signed-off-by: default avatarEduardo Habkost <ehabkost@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 1fe91514

include/asm-x86/paravirt.h

+55 −0
Original line number Diff line number Diff line
@@ -259,6 +259,8 @@ struct pv_mmu_ops { 
#if PAGETABLE_LEVELS == 4

	pudval_t (*pud_val)(pud_t);

	pud_t (*make_pud)(pudval_t pud);



	void (*set_pgd)(pgd_t *pudp, pgd_t pgdval);

#endif	/* PAGETABLE_LEVELS == 4 */

#endif	/* PAGETABLE_LEVELS >= 3 */
@@ -1065,6 +1067,59 @@ static inline void set_pud(pud_t *pudp, pud_t pud) 
		PVOP_VCALL2(pv_mmu_ops.set_pud, pudp,

			    val);

}

#if PAGETABLE_LEVELS == 4

static inline pud_t __pud(pudval_t val)

{

	pudval_t ret;



	if (sizeof(pudval_t) > sizeof(long))

		ret = PVOP_CALL2(pudval_t, pv_mmu_ops.make_pud,

				 val, (u64)val >> 32);

	else

		ret = PVOP_CALL1(pudval_t, pv_mmu_ops.make_pud,

				 val);



	return (pud_t) { ret };

}



static inline pudval_t pud_val(pud_t pud)

{

	pudval_t ret;



	if (sizeof(pudval_t) > sizeof(long))

		ret =  PVOP_CALL2(pudval_t, pv_mmu_ops.pud_val,

				  pud.pud, (u64)pud.pud >> 32);

	else

		ret =  PVOP_CALL1(pudval_t, pv_mmu_ops.pud_val,

				  pud.pud);



	return ret;

}



static inline void set_pgd(pgd_t *pgdp, pgd_t pgd)

{

	pgdval_t val = native_pgd_val(pgd);



	if (sizeof(pgdval_t) > sizeof(long))

		PVOP_VCALL3(pv_mmu_ops.set_pgd, pgdp,

			    val, (u64)val >> 32);

	else

		PVOP_VCALL2(pv_mmu_ops.set_pgd, pgdp,

			    val);

}



static inline void pgd_clear(pgd_t *pgdp)

{

	set_pgd(pgdp, __pgd(0));

}



static inline void pud_clear(pud_t *pudp)

{

	set_pud(pudp, __pud(0));

}



#endif	/* PAGETABLE_LEVELS == 4 */



#endif	/* PAGETABLE_LEVELS >= 3 */



#ifdef CONFIG_X86_PAE

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