Red Hat Bugzilla – Bug 190576
REGRESSION: kabi breakage on ia64_mv
Last modified: 2007-11-30 17:07:24 EST
Description of problem:
Version-Release number of selected component (if applicable):
The ia64_mv appears to have changed between U3 and U4. I am seeing this while
attempting to diagnose an e100 driver issue. If I install kernel-2.6.9-35 but I
grab the e100 from back in U3 it will not load:
e100: disagrees about version of symbol ia64_mv
e100: Unknown symbol ia64_mv
Steps to Reproduce:
1. Install RHEL4 U3
2. Install kernel-2.6.9-35.ia64.EL
3. replace e100.ko with the one from U3
4. reboot to the new kernel and try modprobe e100
hmmm, this is due to bz #183156, changing type for: ia64_mv_global_tlb_purge_t.
Jason -- this shouldn't be an issue. IIRC, the only consumer of this "global"
function is the SN code and SGI was willing to live with the change.
hmmm, i don't think Doug was testing on sgi h/w
also, we have a precedent for fixing this:
Yeah -- I think I see the issue. I'll touch base with Doug when he's in tomorrow.
I have a solution in mind....
Created attachment 128608 [details]
Patch to fix kabi breakage in ia64 branch
Patch to fix Doug's issue with kabi breakage. Doug will post testing results
I have tested this by taking prarit's kernel rpm and replacing the e100.ko
module from U3 as I did before. The module now loads without any symbol
committed in stream U4 build 35.2. A test kernel with this patch is available
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.