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Diffstat (limited to 'arch/x86/include/asm/pgtable_64.h')
-rw-r--r--arch/x86/include/asm/pgtable_64.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
index 62b775926045..73c7ccc38912 100644
--- a/arch/x86/include/asm/pgtable_64.h
+++ b/arch/x86/include/asm/pgtable_64.h
@@ -106,6 +106,21 @@ static inline void native_pud_clear(pud_t *pud)
native_set_pud(pud, native_make_pud(0));
}
+static inline pud_t native_pudp_get_and_clear(pud_t *xp)
+{
+#ifdef CONFIG_SMP
+ return native_make_pud(xchg(&xp->pud, 0));
+#else
+ /* native_local_pudp_get_and_clear,
+ * but duplicated because of cyclic dependency
+ */
+ pud_t ret = *xp;
+
+ native_pud_clear(xp);
+ return ret;
+#endif
+}
+
static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd)
{
*pgdp = pgd;