Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (38 commits)
  MIPS: Sibyte: Fix locking in set_irq_affinity
  MIPS: Use force_sig when handling address errors.
  MIPS: Cavium: Add struct clocksource * argument to octeon_cvmcount_read()
  MIPS: Rewrite <asm/div64.h> to work with gcc 4.4.0.
  MIPS: Fix highmem.
  MIPS: Fix sign-extension bug in 32-bit kernel on 32-bit hardware.
  MIPS: MSP71xx: Remove the RAMROOT functions
  MIPS: Use -mno-check-zero-division
  MIPS: Set compiler options only after the compiler prefix has ben set.
  MIPS: IP27: Get rid of #ident.  Gcc 4.4.0 doesn't like it.
  MIPS: uaccess: Switch lock annotations to might_fault().
  MIPS: MSP71xx: Resolve use of non-existent GPIO routines in msp71xx reset
  MIPS: MSP71xx: Resolve multiple definition of plat_timer_setup
  MIPS: Make uaccess.h slightly more sparse friendly.
  MIPS: Make access_ok() sideeffect proof.
  MIPS: IP27: Fix clash with NMI_OFFSET from hardirq.h
  MIPS: Alchemy: Timer build fix
  MIPS: Kconfig: Delete duplicate definition of RWSEM_GENERIC_SPINLOCK.
  MIPS: Cavium: Add support for 8k and 32k page sizes.
  MIPS: TXx9: Fix possible overflow in clock calculations
  ...

1 files changed, 19 insertions, 6 deletions

diff --git a/arch/mips/mm/highmem.c b/arch/mips/mm/highmem.c
index 4481656d106..2b1309b2580 100644
--- a/arch/mips/mm/highmem.c
+++ b/arch/mips/mm/highmem.c
@@ -1,7 +1,12 @@
 #include <linux/module.h>
 #include <linux/highmem.h>
+#include <asm/fixmap.h>
 #include <asm/tlbflush.h>
 
+static pte_t *kmap_pte;
+
+unsigned long highstart_pfn, highend_pfn;
+
 void *__kmap(struct page *page)
 {
 	void *addr;
@@ -14,6 +19,7 @@ void *__kmap(struct page *page)
 
 	return addr;
 }
+EXPORT_SYMBOL(__kmap);
 
 void __kunmap(struct page *page)
 {
@@ -22,6 +28,7 @@ void __kunmap(struct page *page)
 		return;
 	kunmap_high(page);
 }
+EXPORT_SYMBOL(__kunmap);
 
 /*
  * kmap_atomic/kunmap_atomic is significantly faster than kmap/kunmap because
@@ -48,11 +55,12 @@ void *__kmap_atomic(struct page *page, enum km_type type)
 #ifdef CONFIG_DEBUG_HIGHMEM
 	BUG_ON(!pte_none(*(kmap_pte - idx)));
 #endif
-	set_pte(kmap_pte-idx, mk_pte(page, kmap_prot));
+	set_pte(kmap_pte-idx, mk_pte(page, PAGE_KERNEL));
 	local_flush_tlb_one((unsigned long)vaddr);
 
 	return (void*) vaddr;
 }
+EXPORT_SYMBOL(__kmap_atomic);
 
 void __kunmap_atomic(void *kvaddr, enum km_type type)
 {
@@ -77,6 +85,7 @@ void __kunmap_atomic(void *kvaddr, enum km_type type)
 
 	pagefault_enable();
 }
+EXPORT_SYMBOL(__kunmap_atomic);
 
 /*
  * This is the same as kmap_atomic() but can map memory that doesn't
@@ -92,7 +101,7 @@ void *kmap_atomic_pfn(unsigned long pfn, enum km_type type)
 	debug_kmap_atomic(type);
 	idx = type + KM_TYPE_NR*smp_processor_id();
 	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
-	set_pte(kmap_pte-idx, pfn_pte(pfn, kmap_prot));
+	set_pte(kmap_pte-idx, pfn_pte(pfn, PAGE_KERNEL));
 	flush_tlb_one(vaddr);
 
 	return (void*) vaddr;
@@ -111,7 +120,11 @@ struct page *__kmap_atomic_to_page(void *ptr)
 	return pte_page(*pte);
 }
 
-EXPORT_SYMBOL(__kmap);
-EXPORT_SYMBOL(__kunmap);
-EXPORT_SYMBOL(__kmap_atomic);
-EXPORT_SYMBOL(__kunmap_atomic);
+void __init kmap_init(void)
+{
+	unsigned long kmap_vstart;
+
+	/* cache the first kmap pte */
+	kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN);
+	kmap_pte = kmap_get_fixmap_pte(kmap_vstart);
+}