Split out from v1: https://lore.kernel.org/qemu-devel/20220906101747.344559-1-richard.hender...@linaro.org/ v4: https://lore.kernel.org/qemu-devel/20230220184052.163465-1-richard.hender...@linaro.org/
after I noticed that the testcase, https://lore.kernel.org/qemu-devel/20221130174610.434590-2-...@linux.ibm.com/ does not actually work under KVM. In fact, support for PER_CR9_EVENT_BRANCH in TCG is broken. This cleans it up and improves things so that when only one PER bit is set (what I assume to be the normal state of afairs), we have less overhead. I'm not sure that all of the interactions are correct, particularly with multiple PER triggers or other exceptions. For that, we'd need a more complex test case. But at least branches match hardware now. r~ Richard Henderson (14): target/s390x: Do not use unwind for per_check_exception target/s390x: Move cpu_get_tb_cpu_state out of line target/s390x: Update CR9 bits target/s390x: Record separate PER bits in TB flags target/s390x: Disable conditional branch-to-next for PER target/s390x: Introduce help_goto_indirect target/s390x: Simplify help_branch target/s390x: Split per_breaking_event from per_branch_* target/s390x: Raise exception from helper_per_branch target/s390x: Raise exception from per_store_real target/s390x: Fix helper_per_ifetch flags target/s390x: Simplify per_ifetch, per_check_exception target/s390x: Adjust check of noreturn in translate_one tests/tcg/s390x: Add per.S target/s390x/cpu.h | 83 ++++---- target/s390x/helper.h | 8 +- target/s390x/cpu.c | 36 ++++ target/s390x/tcg/excp_helper.c | 2 +- target/s390x/tcg/misc_helper.c | 68 ++++--- target/s390x/tcg/translate.c | 248 +++++++++--------------- tests/tcg/s390x/Makefile.softmmu-target | 1 + tests/tcg/s390x/per.S | 82 ++++++++ 8 files changed, 302 insertions(+), 226 deletions(-) create mode 100644 tests/tcg/s390x/per.S -- 2.34.1
