From fe1cd9876fa6250a8eb3ae138917a2040eca2c47 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 18 Aug 2008 04:15:12 -0400
Subject: x86, um: get rid of uml highmem.h

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---
 arch/um/include/asm/archparam-i386.h | 10 +++++-----
 arch/um/include/asm/fixmap.h         |  1 +
 arch/um/include/asm/highmem.h        | 12 ------------
 arch/um/include/asm/pgtable.h        |  8 ++++++++
 4 files changed, 14 insertions(+), 17 deletions(-)
 delete mode 100644 arch/um/include/asm/highmem.h

(limited to 'arch/um')

diff --git a/arch/um/include/asm/archparam-i386.h b/arch/um/include/asm/archparam-i386.h
index 49e89b8d7e58..93fd723344e5 100644
--- a/arch/um/include/asm/archparam-i386.h
+++ b/arch/um/include/asm/archparam-i386.h
@@ -6,11 +6,11 @@
 #ifndef __UM_ARCHPARAM_I386_H
 #define __UM_ARCHPARAM_I386_H
 
-/********* Nothing for asm-um/hardirq.h **********/
-
-/********* Nothing for asm-um/hw_irq.h **********/
-
-/********* Nothing for asm-um/string.h **********/
+#ifdef CONFIG_X86_PAE
+#define LAST_PKMAP 512
+#else
+#define LAST_PKMAP 1024
+#endif
 
 #endif
 
diff --git a/arch/um/include/asm/fixmap.h b/arch/um/include/asm/fixmap.h
index 9d2be52b8655..69c0252345f1 100644
--- a/arch/um/include/asm/fixmap.h
+++ b/arch/um/include/asm/fixmap.h
@@ -6,6 +6,7 @@
 #include <asm/kmap_types.h>
 #include <asm/archparam.h>
 #include <asm/page.h>
+#include <linux/threads.h>
 
 /*
  * Here we define all the compile-time 'special' virtual
diff --git a/arch/um/include/asm/highmem.h b/arch/um/include/asm/highmem.h
deleted file mode 100644
index 36974cb8abc7..000000000000
--- a/arch/um/include/asm/highmem.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#ifndef __UM_HIGHMEM_H
-#define __UM_HIGHMEM_H
-
-#include "asm/page.h"
-#include "asm/fixmap.h"
-#include "asm/arch/highmem.h"
-
-#undef PKMAP_BASE
-
-#define PKMAP_BASE ((FIXADDR_START - LAST_PKMAP * PAGE_SIZE) & PMD_MASK)
-
-#endif
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index 02db81b7b86e..58da2480a7f4 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -47,6 +47,7 @@ extern unsigned long end_iomem;
 
 #define VMALLOC_OFFSET	(__va_space)
 #define VMALLOC_START ((end_iomem + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
+#define PKMAP_BASE ((FIXADDR_START - LAST_PKMAP * PAGE_SIZE) & PMD_MASK)
 #ifdef CONFIG_HIGHMEM
 # define VMALLOC_END	(PKMAP_BASE-2*PAGE_SIZE)
 #else
@@ -355,4 +356,11 @@ extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
 
 #include <asm-generic/pgtable.h>
 
+/* Clear a kernel PTE and flush it from the TLB */
+#define kpte_clear_flush(ptep, vaddr)		\
+do {						\
+	pte_clear(&init_mm, (vaddr), (ptep));	\
+	__flush_tlb_one((vaddr));		\
+} while (0)
+
 #endif
-- 
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