When we are updating pte, we just need to flush the tlb mapping for
that pte. Right now we do a full mm flush because we don't track page
size. Now that we have page size details in pte use that to do the
optimized flush
Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/book3s/32/pgtable.h | 3 ++-
arch/powerpc/include/asm/book3s/64/pgtable.h | 5 +++--
arch/powerpc/include/asm/book3s/64/radix.h | 11 +++--------
arch/powerpc/include/asm/nohash/32/pgtable.h | 3 ++-
arch/powerpc/include/asm/nohash/64/pgtable.h | 3 ++-
arch/powerpc/mm/pgtable-book3s64.c | 3 ++-
arch/powerpc/mm/pgtable.c | 2 +-
7 files changed, 15 insertions(+), 15 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h
b/arch/powerpc/include/asm/book3s/32/pgtable.h
index 6b8b2d57fdc8..dc58980f3ad9 100644
--- a/arch/powerpc/include/asm/book3s/32/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/32/pgtable.h
@@ -224,7 +224,8 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct
*mm,
static inline void __ptep_set_access_flags(struct mm_struct *mm,
- pte_t *ptep, pte_t entry)
+ pte_t *ptep, pte_t entry,
+ unsigned long address)
{
unsigned long set = pte_val(entry) &
(_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h
b/arch/powerpc/include/asm/book3s/64/pgtable.h
index e05028894a8e..7f4356de5ce1 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -590,10 +590,11 @@ static inline bool check_pte_access(unsigned long access,
unsigned long ptev)
*/
static inline void __ptep_set_access_flags(struct mm_struct *mm,
- pte_t *ptep, pte_t entry)
+ pte_t *ptep, pte_t entry,
+ unsigned long address)
{
if (radix_enabled())
- return radix__ptep_set_access_flags(mm, ptep, entry);
+ return radix__ptep_set_access_flags(mm, ptep, entry, address);
return hash__ptep_set_access_flags(ptep, entry);
}
diff --git a/arch/powerpc/include/asm/book3s/64/radix.h
b/arch/powerpc/include/asm/book3s/64/radix.h
index de009387e258..08eaceb430ee 100644
--- a/arch/powerpc/include/asm/book3s/64/radix.h
+++ b/arch/powerpc/include/asm/book3s/64/radix.h
@@ -167,7 +167,8 @@ static inline unsigned long radix__pte_update(struct
mm_struct *mm,
* function doesn't need to invalidate tlb.
*/
static inline void radix__ptep_set_access_flags(struct mm_struct *mm,
- pte_t *ptep, pte_t entry)
+ pte_t *ptep, pte_t entry,
+ unsigned long address)
{
unsigned long set = pte_val(entry) & (_PAGE_DIRTY | _PAGE_ACCESSED |
@@ -183,13 +184,7 @@ static inline void radix__ptep_set_access_flags(struct
mm_struct *mm,
* new value of pte
*/
new_pte = old_pte | set;
-
- /*
- * For now let's do heavy pid flush
- * radix__flush_tlb_page_psize(mm, addr, mmu_virtual_psize);
- */
- radix__flush_tlb_mm(mm);
-
+ radix__flush_tlb_pte(old_pte, mm, address);
__radix_pte_update(ptep, 0, new_pte);
} else
__radix_pte_update(ptep, 0, set);
diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h
b/arch/powerpc/include/asm/nohash/32/pgtable.h
index c219ef7be53b..65073fbc6707 100644
--- a/arch/powerpc/include/asm/nohash/32/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
@@ -268,7 +268,8 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct
*mm,
static inline void __ptep_set_access_flags(struct mm_struct *mm,
- pte_t *ptep, pte_t entry)
+ pte_t *ptep, pte_t entry,
+ unsigned long address)
{
unsigned long set = pte_val(entry) &
(_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h
b/arch/powerpc/include/asm/nohash/64/pgtable.h
index 653a1838469d..ea1c0123b85c 100644
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -301,7 +301,8 @@ static inline void pte_clear(struct mm_struct *mm, unsigned
long addr,
* function doesn't need to flush the hash entry
*/
static inline void __ptep_set_access_flags(struct mm_struct *mm,
- pte_t *ptep, pte_t entry)
+ pte_t *ptep, pte_t entry,
+ unsigned long address)
{
unsigned long bits = pte_val(entry) &
(_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW | _PAGE_EXEC);
diff --git a/arch/powerpc/mm/pgtable-book3s64.c
b/arch/powerpc/mm/pgtable-book3s64.c
index f4f437cbabf1..ebf9782bacf9 100644
--- a/arch/powerpc/mm/pgtable-book3s64.c
+++ b/arch/powerpc/mm/pgtable-book3s64.c
@@ -35,7 +35,8 @@ int pmdp_set_access_flags(struct vm_area_struct *vma,
unsigned long address,
#endif
changed = !pmd_same(*(pmdp), entry);
if (changed) {
- __ptep_set_access_flags(vma->vm_mm, pmdp_ptep(pmdp),
pmd_pte(entry));
+ __ptep_set_access_flags(vma->vm_mm, pmdp_ptep(pmdp),
+ pmd_pte(entry), address);
flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
}
return changed;
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index 911fdfb63ec1..cb39c8bd2436 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -224,7 +224,7 @@ int ptep_set_access_flags(struct vm_area_struct *vma,
unsigned long address,
if (changed) {
if (!is_vm_hugetlb_page(vma))
assert_pte_locked(vma->vm_mm, address);
- __ptep_set_access_flags(vma->vm_mm, ptep, entry);
+ __ptep_set_access_flags(vma->vm_mm, ptep, entry, address);
flush_tlb_page(vma, address);
}
return changed;
--
2.10.2
