diff --git a/psmisc-22.13-ppc64.patch b/psmisc-22.13-ppc64.patch
new file mode 100644
index 0000000..654b21c
--- /dev/null
+++ b/psmisc-22.13-ppc64.patch
@@ -0,0 +1,53 @@
+diff --git a/src/peekfd.c b/src/peekfd.c
+index 6d759b9..c4a3474 100644
+--- a/src/peekfd.c
++++ b/src/peekfd.c
+@@ -55,6 +55,9 @@
+ 	#define REG_PARAM1 orig_gpr3
+ 	#define REG_PARAM2 gpr[4]
+ 	#define REG_PARAM3 gpr[5]
++#ifndef PT_ORIG_R3
++	#define PT_ORIG_R3 34
++#endif
+ #elif defined(ARM)
+ #ifndef __ARM_EABI__
+ #error arm oabi not supported
+@@ -73,9 +76,6 @@
+ 	#define REG_PARAM1 regs[4]
+ 	#define REG_PARAM2 regs[5]
+ 	#define REG_PARAM3 regs[6]
+-#ifndef PT_ORIG_R3
+-	#define PT_ORIG_R3 34
+-#endif
+ #endif
+ 
+ #define MAX_ATTACHED_PIDS 1024
+@@ -222,11 +222,11 @@ int main(int argc, char **argv)
+ 		if (WIFSTOPPED(status)) {
+ #ifdef PPC
+ 			struct pt_regs regs;
+-			regs.gpr[0] = ptrace(PTRACE_PEEKUSER, pid, 4 * PT_R0, 0);
+-			regs.gpr[3] = ptrace(PTRACE_PEEKUSER, pid, 4 * PT_R3, 0);
+-			regs.gpr[4] = ptrace(PTRACE_PEEKUSER, pid, 4 * PT_R4, 0);
+-			regs.gpr[5] = ptrace(PTRACE_PEEKUSER, pid, 4 * PT_R5, 0);
+-			regs.orig_gpr3 = ptrace(PTRACE_PEEKUSER, pid, 4 * PT_ORIG_R3, 0);
++			regs.gpr[0] = ptrace(PTRACE_PEEKUSER, pid, __WORDSIZE/8 * PT_R0, 0);
++			regs.gpr[3] = ptrace(PTRACE_PEEKUSER, pid, __WORDSIZE/8 * PT_R3, 0);
++			regs.gpr[4] = ptrace(PTRACE_PEEKUSER, pid, __WORDSIZE/8 * PT_R4, 0);
++			regs.gpr[5] = ptrace(PTRACE_PEEKUSER, pid, __WORDSIZE/8 * PT_R5, 0);
++			regs.orig_gpr3 = ptrace(PTRACE_PEEKUSER, pid, __WORDSIZE/8 * PT_ORIG_R3, 0);
+ #elif defined(ARM)
+ 			struct pt_regs regs;
+ 			ptrace(PTRACE_GETREGS, pid, 0, &regs);
+@@ -271,7 +271,11 @@ int main(int argc, char **argv)
+ 
+ 						for (i = 0; i < regs.REG_PARAM3; i++) {
+ #ifdef _BIG_ENDIAN
++#if __WORDSIZE == 64
++							unsigned int a = bswap_64(ptrace(PTRACE_PEEKTEXT, pid, regs.REG_PARAM2 + i, 0));
++#else
+ 							unsigned int a = bswap_32(ptrace(PTRACE_PEEKTEXT, pid, regs.REG_PARAM2 + i, 0));
++#endif
+ #else
+ 							unsigned int a = ptrace(PTRACE_PEEKTEXT, pid, regs.REG_PARAM2 + i, 0);
+ #endif
diff --git a/psmisc.spec b/psmisc.spec
index 335fbb3..4c14e8f 100644
--- a/psmisc.spec
+++ b/psmisc.spec
@@ -1,7 +1,7 @@
 Summary: Utilities for managing processes on your system
 Name: psmisc
 Version: 22.13
-Release: 6%{?dist}
+Release: 7%{?dist}
 License: GPLv2+
 Group: Applications/System
 Source: http://downloads.sourceforge.net/%{name}/%{name}-%{version}.tar.gz
@@ -16,6 +16,7 @@ BuildRequires: autoconf automake
 Patch1: psmisc-22.13-peekfd-segv.patch
 Patch2: psmisc-22.13-fuser-silent.patch
 Patch3: psmisc-22.13-killall-pgid.patch
+Patch4: psmisc-22.13-ppc64.patch
 
 %description
 The psmisc package contains utilities for managing processes on your
@@ -31,6 +32,7 @@ of processes that are using specified files or filesystems.
 %patch1 -p1
 %patch2 -p1
 %patch3 -p1
+%patch4 -p1
 
 %build
 %configure --prefix=%{_prefix} --enable-selinux
@@ -65,6 +67,9 @@ rm -rf $RPM_BUILD_ROOT
 %doc AUTHORS ChangeLog COPYING README
 
 %changelog
+* Thu Jan 27 2011 Jan Görig <jgorig@redhat.com> 22.13-7
+- fix #671135 - peekfd utility doesn't work on ppc64 architecture
+
 * Fri Jan 7 2011 Jan Görig <jgorig@redhat.com> 22.13-6
 - fix #666213 - uninitialized memory leading to `killall -g name` failure