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authorMichael Ellerman <mpe@ellerman.id.au>2015-04-30 15:13:14 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2015-04-30 15:24:58 +1000
commit68fc378ce332cc4efd7f314d3e6e15e83f53ebf2 (patch)
tree5a539c138cad206146296eaf0c6e0ea81655d4ee /tools
parentd33047fd7e7d93662622888681861ba84d43c506 (diff)
Revert "powerpc/tm: Abort syscalls in active transactions"
This reverts commit feba40362b11341bee6d8ed58d54b896abbd9f84. Although the principle of this change is good, the implementation has a few issues. Firstly we can sometimes fail to abort a syscall because r12 may have been clobbered by C code if we went down the virtual CPU accounting path, or if syscall tracing was enabled. Secondly we have decided that it is safer to abort the syscall even earlier in the syscall entry path, so that we avoid the syscall tracing path when we are transactional. So that we have time to thoroughly test those changes we have decided to revert this for this merge window and will merge the fixed version in the next window. NB. Rather than reverting the selftest we just drop tm-syscall from TEST_PROGS so that it's not run by default. Fixes: feba40362b11 ("powerpc/tm: Abort syscalls in active transactions") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/powerpc/tm/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/powerpc/tm/Makefile b/tools/testing/selftests/powerpc/tm/Makefile
index 1b616fa79e93..6bff955e1d55 100644
--- a/tools/testing/selftests/powerpc/tm/Makefile
+++ b/tools/testing/selftests/powerpc/tm/Makefile
@@ -1,4 +1,4 @@
-TEST_PROGS := tm-resched-dscr tm-syscall
+TEST_PROGS := tm-resched-dscr
all: $(TEST_PROGS)