[PATCH] i386: PARAVIRT: add kmap_atomic_pte for mapping highpte pages

[mirror_ubuntu-bionic-kernel.git] / include / asm-i386 / paravirt.h

diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h
index 10f44af76b49ecd011027e372e4e84814e28c26b..5048b41428fa5524107d8cdf4fa3434ba6f0cb30 100644 (file)
--- a/include/asm-i386/paravirt.h
+++ b/include/asm-i386/paravirt.h
@@ -16,7 +16,9 @@
 #ifndef __ASSEMBLY__
 #include <linux/types.h>
 #include <linux/cpumask.h>
+#include <asm/kmap_types.h>
 
+struct page;
 struct thread_struct;
 struct Xgt_desc_struct;
 struct tss_struct;
@@ -187,6 +189,10 @@ struct paravirt_ops
 
        pte_t (*ptep_get_and_clear)(pte_t *ptep);
 
+#ifdef CONFIG_HIGHPTE
+       void *(*kmap_atomic_pte)(struct page *page, enum km_type type);
+#endif
+
 #ifdef CONFIG_X86_PAE
        void (*set_pte_atomic)(pte_t *ptep, pte_t pteval);
        void (*set_pte_present)(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte);
@@ -884,6 +890,15 @@ static inline void paravirt_release_pd(unsigned pfn)
        PVOP_VCALL1(release_pd, pfn);
 }
 
+#ifdef CONFIG_HIGHPTE
+static inline void *kmap_atomic_pte(struct page *page, enum km_type type)
+{
+       unsigned long ret;
+       ret = PVOP_CALL2(unsigned long, kmap_atomic_pte, page, type);
+       return (void *)ret;
+}
+#endif
+
 static inline void pte_update(struct mm_struct *mm, unsigned long addr,
                              pte_t *ptep)
 {