From a27fe809b82c5e18932fcceded28d0d1481ce7bb Mon Sep 17 00:00:00 2001
From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Wed, 2 May 2007 19:27:15 +0200
Subject: [PATCH] [PATCH] i386: PARAVIRT: revert map_pt_hook.
Back out the map_pt_hook to clear the way for kmap_atomic_pte.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
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(-)
diff --git a/arch/i386/kernel/paravirt.c b/arch/i386/kernel/paravirt.c
index c7f0cf92925f..13f41b5c887a 100644
--- a/arch/i386/kernel/paravirt.c
+++ b/arch/i386/kernel/paravirt.c
@@ -302,8 +302,6 @@ 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,
diff --git a/arch/i386/kernel/vmi.c b/arch/i386/kernel/vmi.c
index b8d01c3cbff4..ccad7ee960aa 100644
--- a/arch/i386/kernel/vmi.c
+++ b/arch/i386/kernel/vmi.c
@@ -851,8 +851,10 @@ static inline int __init activate_vmi(void)
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
diff --git a/include/asm-i386/paravirt.h b/include/asm-i386/paravirt.h
index f880b06d6d56..10f44af76b49 100644
--- a/include/asm-i386/paravirt.h
+++ b/include/asm-i386/paravirt.h
@@ -169,8 +169,6 @@ struct paravirt_ops
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);
-
/* Hooks for allocating/releasing pagetable pages */
void (*alloc_pt)(u32 pfn);
void (*alloc_pd)(u32 pfn);
@@ -862,11 +860,6 @@ static inline void flush_tlb_others(cpumask_t cpumask, struct mm_struct *mm,
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);
-}
-
static inline void paravirt_alloc_pt(unsigned pfn)
{
PVOP_VCALL1(alloc_pt, pfn);
diff --git a/include/asm-i386/pgtable.h b/include/asm-i386/pgtable.h
index 5b88a6a1278e..6599f2aa91b7 100644
--- a/include/asm-i386/pgtable.h
+++ b/include/asm-i386/pgtable.h
@@ -267,7 +267,6 @@ extern 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
@@ -476,24 +475,10 @@ extern pte_t *lookup_address(unsigned long address);
#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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