Disable testcase because the ptrace system call is not 
supported on ppc64.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15010 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/m_syswrap/syswrap-ppc64-linux.c b/coregrind/m_syswrap/syswrap-ppc64-linux.c
index b309f43..0016071 100644
--- a/coregrind/m_syswrap/syswrap-ppc64-linux.c
+++ b/coregrind/m_syswrap/syswrap-ppc64-linux.c
@@ -810,6 +810,7 @@
    GENX_(__NR_getuid,            sys_getuid),             //  24
 
 // _____(__NR_stime,             sys_stime),              //  25
+// When ptrace is supported, memcheck/tests/linux/getregset should be enabled
 // _____(__NR_ptrace,            sys_ptrace),             //  26
    GENX_(__NR_alarm,             sys_alarm),              //  27
 // _____(__NR_oldfstat,          sys_oldfstat),           //  28
diff --git a/memcheck/tests/linux/getregset.vgtest b/memcheck/tests/linux/getregset.vgtest
index c6e318a..8a69bce 100644
--- a/memcheck/tests/linux/getregset.vgtest
+++ b/memcheck/tests/linux/getregset.vgtest
@@ -1,4 +1,4 @@
 prog: getregset
 vgopts: -q
-prereq: ../../../tests/os_test linux 2.6.33 && ! ../../../tests/arch_test mips32
+prereq: ../../../tests/os_test linux 2.6.33 && ! ../../../tests/arch_test mips32 && ! `../../../tests/arch_test ppc64`