iw_cxgb3: allow doorbell mappings with VM_READ set.
This is needed on RHEL4U4. The vma passed into the iw_cxgb3 mmap function
has VM_READ set even though the library only request write.
Signed-off-by: Steve Wise <[EMAIL PROTECTED]>
---
.../2.6.9_U4/iwch_provider_to_2.6.9_U4.patch | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/kernel_patches/backport/2.6.9_U4/iwch_provider_to_2.6.9_U4.patch
b/kernel_patches/backport/2.6.9_U4/iwch_provider_to_2.6.9_U4.patch
new file mode 100644
index 0000000..1fbc717
--- /dev/null
+++ b/kernel_patches/backport/2.6.9_U4/iwch_provider_to_2.6.9_U4.patch
@@ -0,0 +1,16 @@
+--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c 2007-01-17
09:22:39.000000000 -0600
++++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c 2007-01-22
17:46:16.000000000 -0600
+@@ -337,13 +337,6 @@ static int iwch_mmap(struct ib_ucontext
+ (pgaddr < (rdev_p->rnic_info.udbell_physbase +
+ rdev_p->rnic_info.udbell_len))) {
+
+- /*
+- * Map T3 DB register.
+- */
+- if (vma->vm_flags & VM_READ) {
+- return -EPERM;
+- }
+-
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;
+ vma->vm_flags &= ~VM_MAYREAD;
_______________________________________________
openib-general mailing list
[email protected]
http://openib.org/mailman/listinfo/openib-general
To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
