Bug 926602

Summary:	systemtap: Does not support aarch64 in f19 and rawhide
Product:	[Fedora] Fedora	Reporter:	Dennis Gilmore <dennis>
Component:	systemtap	Assignee:	Frank Ch. Eigler <fche>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	dsmith, fche, jistone, lberk, mbenitez, mjw, mjw, nathans, pbrobinson, scox, wcohen
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-01-14 18:47:55 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	922257, 963434

Description Dennis Gilmore 2013-03-23 16:24:00 UTC

Support for the ARM 64 bit CPU architecture (aarch64) was introduced in 
autoconf 2.69.  systemtap appears to use an earlier version of 
autoconf, preventing its being built.  This can be fixed in of three ways (In order of preference):

1. Work with upstream to migrate the package to autoconf 2.69.

2. Rerun autoconf or autoreconf in %prep or %build prior to running 
configure.

3. Apply the patch at http://ausil.fedorapeople.org/aarch64/systemtap/systemtap-aarch64.patch
which updates config.guess and config.sub to recognize aarch64.

Comment 1 Lukas Berk 2013-03-26 16:44:42 UTC

Upstream migrated to autoconf 2.69 in commit 76df176fdceb33c14a07a74b2dc70e72b13fc1b7

Systemtap has been respun as needed in Fedora 19 (http://koji.fedoraproject.org/koji/taskinfo?taskID=5176066)

We're just waiting on BZ927996 to get systemtap respun with the new autoconf version in rawhide

Comment 2 William Cohen 2013-09-20 13:33:15 UTC

What needs additional work needs to be done for systemtap to function on aarch64:

kernel kprobes support
kernel uprobes support
systemtap runtime:
   stack and stack unwind support
   regs.h
systemtap translator need machine specific code fixed in:
  tapsets.cxx
  util.cxx
  dwflpp.cxx
systemtap tapset:
   tapset/aarch64/registers.stp for no-debuginfo syscall probing

Comment 3 Mark Wielaard 2013-09-20 14:09:30 UTC

We also need an elfutil ARM64 libebl backend. To decode relocations in kernel modules and DWARF register mappings plus initial CFI values.

Comment 4 Mark Wielaard 2013-10-30 19:34:23 UTC

(In reply to Mark Wielaard from comment #3)
> We also need an elfutil ARM64 libebl backend. To decode relocations in
> kernel modules and DWARF register mappings plus initial CFI values.

Most of that is there now on a branch.
https://git.fedorahosted.org/cgit/elfutils.git/log/?h=pmachata/aarch64
Not yet integrated into upstream master.