[patch 18/34] Xen-pv_ops: revert map_pt_hook.

[Jeremy Fitzhardinge <jeremy@goop.org>]

[-- Attachment #1: revert-map_pt_hook.patch --]
[-- Type: text/plain, Size: 3690 bytes --]

Back out the map_pt_hook to clear the way for kmap_atomic_pte.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Zachary Amsden <zach@vmware.com>

---
 arch/i386/kernel/paravirt.c |    2 --
 arch/i386/kernel/vmi.c      |    2 ++
 include/asm-i386/paravirt.h |    7 -------
 include/asm-i386/pgtable.h  |   23 ++++-------------------
 4 files changed, 6 insertions(+), 28 deletions(-)

===================================================================
--- a/arch/i386/kernel/paravirt.c
+++ b/arch/i386/kernel/paravirt.c
@@ -586,8 +586,6 @@ struct paravirt_ops paravirt_ops = {
 	.flush_tlb_single = native_flush_tlb_single,
 	.flush_tlb_others = native_flush_tlb_others,
 
-	.map_pt_hook = paravirt_nop,
-
 	.alloc_pt = paravirt_nop,
 	.alloc_pd = paravirt_nop,
 	.alloc_pd_clone = paravirt_nop,
===================================================================
--- a/arch/i386/kernel/vmi.c
+++ b/arch/i386/kernel/vmi.c
@@ -824,8 +824,10 @@ static inline int __init activate_vmi(vo
 		paravirt_ops.release_pt = vmi_release_pt;
 		paravirt_ops.release_pd = vmi_release_pd;
 	}
+#if 0
 	para_wrap(map_pt_hook, vmi_map_pt_hook, set_linear_mapping,
 		  SetLinearMapping);
+#endif
 
 	/*
 	 * These MUST always be patched.  Don't support indirect jumps
===================================================================
--- a/include/asm-i386/paravirt.h
+++ b/include/asm-i386/paravirt.h
@@ -124,8 +124,6 @@ struct paravirt_ops
 	void (*flush_tlb_single)(u32 addr);
 	void (*flush_tlb_others)(const cpumask_t *cpus, struct mm_struct *mm,
 				 unsigned long va);
-
-	void (*map_pt_hook)(int type, pte_t *va, u32 pfn);
 
 	void (*alloc_pt)(u32 pfn);
 	void (*alloc_pd)(u32 pfn);
@@ -661,11 +659,6 @@ static inline void flush_tlb_others(cpum
 	PVOP_VCALL3(flush_tlb_others, &cpumask, mm, va);
 }
 
-static inline void paravirt_map_pt_hook(int type, pte_t *va, u32 pfn)
-{
-	PVOP_VCALL3(map_pt_hook, type, va, pfn);
-}
-
 #define paravirt_alloc_pt(pfn)	PVOP_VCALL1(alloc_pt, pfn)
 #define paravirt_release_pt(pfn) PVOP_VCALL1(release_pt, pfn)
 
===================================================================
--- a/include/asm-i386/pgtable.h
+++ b/include/asm-i386/pgtable.h
@@ -270,7 +270,6 @@ static inline void vmalloc_sync_all(void
  */
 #define pte_update(mm, addr, ptep)		do { } while (0)
 #define pte_update_defer(mm, addr, ptep)	do { } while (0)
-#define paravirt_map_pt_hook(slot, va, pfn)	do { } while (0)
 
 #define raw_ptep_get_and_clear(xp)     native_ptep_get_and_clear(xp)
 #endif
@@ -479,24 +478,10 @@ extern pte_t *lookup_address(unsigned lo
 #endif
 
 #if defined(CONFIG_HIGHPTE)
-#define pte_offset_map(dir, address)				\
-({								\
-	pte_t *__ptep;						\
-	unsigned pfn = pmd_val(*(dir)) >> PAGE_SHIFT;	   	\
-	__ptep = (pte_t *)kmap_atomic(pfn_to_page(pfn),KM_PTE0);\
-	paravirt_map_pt_hook(KM_PTE0,__ptep, pfn);		\
-	__ptep = __ptep + pte_index(address);			\
-	__ptep;							\
-})
-#define pte_offset_map_nested(dir, address)			\
-({								\
-	pte_t *__ptep;						\
-	unsigned pfn = pmd_val(*(dir)) >> PAGE_SHIFT;	   	\
-	__ptep = (pte_t *)kmap_atomic(pfn_to_page(pfn),KM_PTE1);\
-	paravirt_map_pt_hook(KM_PTE1,__ptep, pfn);		\
-	__ptep = __ptep + pte_index(address);			\
-	__ptep;							\
-})
+#define pte_offset_map(dir, address) \
+	((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE0) + pte_index(address))
+#define pte_offset_map_nested(dir, address) \
+	((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE1) + pte_index(address))
 #define pte_unmap(pte) kunmap_atomic(pte, KM_PTE0)
 #define pte_unmap_nested(pte) kunmap_atomic(pte, KM_PTE1)
 #else

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