On Thu, 3 Jul 2008 17:59:43 +0530 Kamalesh Babulal <kamalesh@xxxxxxxxxxxxxxxxxx> wrote:
> Hi Andrew,
>
> 2.6.26-rc8-mm1 kernel build fails on the x86
>
> CC arch/x86/kernel/paravirt.o
> arch/x86/kernel/paravirt.c:383: error: _____ptep_modify_prot_start___ undeclared here (not in a function)
> make[1]: *** [arch/x86/kernel/paravirt.o] Error 1
> make: *** [arch/x86/kernel] Error 2
>
> linux-next patches has the changes to the adds the function
> __ptep_modify_prot_start as inline, the patch s390-build-fixes.patch
> is coverting it into macro. Reverting the s390-build-fixes.patch
> fixes the build failure.
grump. Who did all this stuff?
I dunno. I'll drop s390-build-fixes.patch, add some ccs and stomp off.
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
In file included from include/asm/pgtable.h:1087,
from include/linux/mm.h:39,
from arch/s390/mm/hugetlbpage.c:8:
include/asm-generic/pgtable.h: In function '__ptep_modify_prot_start':
include/asm-generic/pgtable.h:209: error: dereferencing pointer to incomplete type
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-generic/pgtable.h | 26 +++++++++-----------------
1 file changed, 9 insertions(+), 17 deletions(-)
diff -puN include/asm-generic/pgtable.h~s390-build-fixes include/asm-generic/pgtable.h
--- a/include/asm-generic/pgtable.h~s390-build-fixes
+++ a/include/asm-generic/pgtable.h
@@ -197,17 +197,13 @@ static inline int pmd_none_or_clear_bad(
}
#endif /* CONFIG_MMU */
-static inline pte_t __ptep_modify_prot_start(struct mm_struct *mm,
- unsigned long addr,
- pte_t *ptep)
-{
- /*
- * Get the current pte state, but zero it out to make it
- * non-present, preventing the hardware from asynchronously
- * updating it.
- */
- return ptep_get_and_clear(mm, addr, ptep);
-}
+/*
+ * Get the current pte state, but zero it out to make it
+ * non-present, preventing the hardware from asynchronously
+ * updating it.
+ */
+#define __ptep_modify_prot_start(mm, addr, ptep) \
+ ptep_get_and_clear(mm, addr, ptep)
static inline void __ptep_modify_prot_commit(struct mm_struct *mm,
unsigned long addr,
@@ -235,12 +231,8 @@ static inline void __ptep_modify_prot_co
* queue the update to be done at some later time. The update must be
* actually committed before the pte lock is released, however.
*/
-static inline pte_t ptep_modify_prot_start(struct mm_struct *mm,
- unsigned long addr,
- pte_t *ptep)
-{
- return __ptep_modify_prot_start(mm, addr, ptep);
-}
+#define ptep_modify_prot_start(mm, addr, ptep) \
+ __ptep_modify_prot_start(mm, addr, ptep)
/*
* Commit an update to a pte, leaving any hardware-controlled bits in
_
--
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