M. Koehrer wrote:
> Hello Gilles,
>
> I tried a couple of Xenomai/Kernel combinations.
> The result is the following:
>
> Xeno 2.4.4 and kernel 2.6.25: ok
> Xeno 2.4.5 and kernel 2.6.25: ok
> Xeno 2.4.5 and kernel 2.6.26: crash
> (In all tests, I used the adeos patch that was part of the release Xenomai
> version).
>
> Thus, some rmap code in kernel 2.6.26 seems to be different than with 2.6.25.
>
> I hope that helps to find out what is wrong...
Yes, thanks. This is a bug which should have been fixed since then. But
here is a patch for your version. Could you try it?
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 816cf71..568cd8d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -109,7 +109,7 @@ extern unsigned int kobjsize(const void *objp);
#define VM_CAN_NONLINEAR 0x08000000 /* Has ->fault & does nonlinear pages */
#define VM_MIXEDMAP 0x10000000 /* Can contain "struct page" and pure
PFN pages */
-#define VM_PINNED 0x10000000 /* Disable faults for the vma */
+#define VM_PINNED 0x20000000 /* Disable faults for the vma */
#ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */
#define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
--
Gilles.
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