threads and fork on machine with VIPT-WB cache
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Message ID 20100411222554.GA10147@hiauly1.hia.nrc.ca
State Superseded
Headers show

Commit Message

John David Anglin April 11, 2010, 10:25 p.m. UTC
None

Patch
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diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index a27d2e2..e85f43c 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -14,6 +14,7 @@ 
 #include <linux/bitops.h>
 #include <asm/processor.h>
 #include <asm/cache.h>
+extern void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn);
 
 /*
  * kern_addr_valid(ADDR) tests if ADDR is pointing to valid kernel
@@ -456,7 +457,7 @@  static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
 	return old_pte;
 }
 
-static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+static inline void ptep_set_wrprotect(struct vm_area_struct *vma, struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
 #ifdef CONFIG_SMP
 	unsigned long new, old;
@@ -469,6 +470,8 @@  static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 	pte_t old_pte = *ptep;
 	set_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
 #endif
+
+	flush_cache_page(vma, addr, pte_pfn(*ptep));
 }
 
 #define pte_same(A,B)	(pte_val(A) == pte_val(B))