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>
DX37 · Oct 23, 2008 · fe1cd98 · fe1cd98
1 parent ff64b4c
commit fe1cd98
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Showing 4 changed files with 14 additions and 17 deletions.
diff --git 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
@@ -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
diff --git 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