From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 30 Jan 2008 12:32:43 +0000 (+0100)
Subject: x86: page.h: move and unify types for pagetable entry, #5
X-Git-Tag: firefly_0821_release~23636^2~404
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=38f0f12793a490ac633dbba2418172b7abfa077e;p=firefly-linux-kernel-4.4.55.git

x86: page.h: move and unify types for pagetable entry, #5

based on:

 Subject: x86: page.h: move and unify types for pagetable entry
 From: Jeremy Fitzhardinge <jeremy@goop.org>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/include/asm-x86/page.h b/include/asm-x86/page.h
index 530439e0d340..014f087d7c27 100644
--- a/include/asm-x86/page.h
+++ b/include/asm-x86/page.h
@@ -181,6 +181,78 @@ static void inline copy_user_page(void *to, void *from, unsigned long vaddr,
 	alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
 #define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
 
+#ifdef CONFIG_X86_64
+typedef struct { pgdval_t pgd; } pgd_t;
+typedef struct { pgprotval_t pgprot; } pgprot_t;
+
+static inline pgd_t native_make_pgd(pgdval_t val)
+{
+	return (pgd_t) { val };
+}
+
+static inline pgdval_t native_pgd_val(pgd_t pgd)
+{
+	return pgd.pgd;
+}
+
+#if PAGETABLE_LEVELS >= 3
+#if PAGETABLE_LEVELS == 4
+typedef struct { pudval_t pud; } pud_t;
+
+static inline pud_t native_make_pud(pmdval_t val)
+{
+	return (pud_t) { val };
+}
+
+static inline pudval_t native_pud_val(pud_t pud)
+{
+	return pud.pud;
+}
+#else	/* PAGETABLE_LEVELS == 3 */
+#include <asm-generic/pgtable-nopud.h>
+#endif	/* PAGETABLE_LEVELS == 4 */
+
+typedef struct { pmdval_t pmd; } pmd_t;
+
+static inline pmd_t native_make_pmd(pmdval_t val)
+{
+	return (pmd_t) { val };
+}
+
+static inline pmdval_t native_pmd_val(pmd_t pmd)
+{
+	return pmd.pmd;
+}
+#else  /* PAGETABLE_LEVELS == 2 */
+#include <asm-generic/pgtable-nopmd.h>
+#endif	/* PAGETABLE_LEVELS >= 3 */
+
+#define pgprot_val(x)	((x).pgprot)
+#define __pgprot(x)	((pgprot_t) { (x) } )
+
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else  /* !CONFIG_PARAVIRT */
+
+#define pgd_val(x)	native_pgd_val(x)
+#define __pgd(x)	native_make_pgd(x)
+
+#ifndef __PAGETABLE_PUD_FOLDED
+#define pud_val(x)	native_pud_val(x)
+#define __pud(x)	native_make_pud(x)
+#endif
+
+#ifndef __PAGETABLE_PMD_FOLDED
+#define pmd_val(x)	native_pmd_val(x)
+#define __pmd(x)	native_make_pmd(x)
+#endif
+
+#define pte_val(x)	native_pte_val(x)
+#define __pte(x)	native_make_pte(x)
+
+#endif	/* CONFIG_PARAVIRT */
+
+#endif /* CONFIG_X86_64 */
 #endif	/* __ASSEMBLY__ */
 
 
diff --git a/include/asm-x86/page_64.h b/include/asm-x86/page_64.h
index f5e82c695d26..f8a07bf54c3c 100644
--- a/include/asm-x86/page_64.h
+++ b/include/asm-x86/page_64.h
@@ -7,30 +7,9 @@
 extern unsigned long end_pfn;
 extern unsigned long end_pfn_map;
 
-/*
- * These are used to make use of C type-checking..
- */
-typedef struct { unsigned long pmd; } pmd_t;
-typedef struct { unsigned long pud; } pud_t;
-typedef struct { unsigned long pgd; } pgd_t;
-#define PTE_MASK	PHYSICAL_PAGE_MASK
-
-typedef struct { unsigned long pgprot; } pgprot_t;
 
 extern unsigned long phys_base;
 
-#define pte_val(x)	((x).pte)
-#define pmd_val(x)	((x).pmd)
-#define pud_val(x)	((x).pud)
-#define pgd_val(x)	((x).pgd)
-#define pgprot_val(x)	((x).pgprot)
-
-#define __pte(x) ((pte_t) { (x) } )
-#define __pmd(x) ((pmd_t) { (x) } )
-#define __pud(x) ((pud_t) { (x) } )
-#define __pgd(x) ((pgd_t) { (x) } )
-#define __pgprot(x)	((pgprot_t) { (x) } )
-
 #endif /* !__ASSEMBLY__ */
 
 #ifndef __ASSEMBLY__