Bug 2365

Summary: crownbay|fri2: __ioremap_caller WARNING with BLDK2 boot
Product: [Build System, Metadata & Runtime] BSPs Reporter: Tom Zanussi <tom.zanussi>
Component: bsps-configurationAssignee: Bruce Ashfield <bruce.ashfield>
Status: RESOLVED FIXED QA Contact:
Severity: minor    
Priority: Low CC: bruce.ashfield, dvhart, jessica.zhang, yp.bsp.watcher, yp.watcher
Version: unspecified   
Target Milestone: 1.2   
Hardware: x86   
OS: other   
Whiteboard:
OS type for building Yocto: --- Type of Regression: ---
Verified: Documentation change: ---

Description Tom Zanussi 2012-04-23 15:10:41 UTC 
While bringing up a demo using crownbay, a WARNING was noted, which
however didn't seem to affect system operation.

The problem can be fixed with a patch from Fedora (Add patch to fix 32bit EFI service mapping (rhbz 726701)):

http://git.yoctoproject.org/cgit/cgit.cgi/linux-yocto-2.6.37-contrib/commit/?h=tzanussi/ioremap-fix

Filing this as a low priority bug, mainly to keep track of the info until such
time as we officially support bldk2.


WARNING: at /usr/local/dev/yocto/crownbay-efi/build/tmp/work/crownbay-poky-linux/linux-yocto-3.2.1
1+git1+514847185c78c07f52e02750fbe0a03ca3a31d8f_1+211fc7f4d10ec2b82b424286aabbaff9254b7cbd-r1/linu
x/arch/x86/mm/ioremap.c:102 __ioremap_caller+0x2d3/0x2e0()
Hardware name: Crown Bay
Modules linked in:
Pid: 0, comm: swapper/0 Not tainted 3.2.11-yocto-standard #1
Call Trace:
 [<c14edc0e>] ? printk+0x1e/0x20
 [<c103c603>] warn_slowpath_common+0x73/0xa0
 [<c101ec03>] ? __ioremap_caller+0x2d3/0x2e0
 [<c101ec03>] ? __ioremap_caller+0x2d3/0x2e0
 [<c103c653>] warn_slowpath_null+0x23/0x30
 [<c101ec03>] __ioremap_caller+0x2d3/0x2e0
 [<c10cd1dd>] ? krealloc+0x1d/0x60
 [<c10e75df>] ? kfree+0xf/0x150
 [<c101ec59>] ioremap_cache+0x19/0x20
 [<c1754c7d>] ? efi_enter_virtual_mode+0x14a/0x394
 [<c1754c7d>] efi_enter_virtual_mode+0x14a/0x394
 [<c17426c8>] start_kernel+0x294/0x309
 [<c17421c1>] ? loglevel+0x2c/0x2c
 [<c17420aa>] i386_start_kernel+0xaa/0xb1
---[ end trace 4eaa2a86a8e2da22 ]---
Comment 1 Darren Hart 2012-05-02 22:39:30 UTC 
Waiting to hear back from Redhat on this.
Comment 2 Darren Hart 2012-05-25 23:01:36 UTC 
Bruce, can you pull this in as is for now? Should be safe in yocto/base. Since Tom already has the patch in the branch, I thought I'd just send the request here :-)
Comment 3 Bruce Ashfield 2012-05-29 20:26:27 UTC 
I've moved this to base, and merged it to all BSPs.
Comment 4 Darren Hart 2012-08-13 15:25:33 UTC 
This is in master (has been for a while) :-)