On 6/5/2025 11:10 AM, Xin Li (Intel) wrote: > > Xin Li (Intel) (2): > x86/fred/signal: Prevent single-step upon ERETU completion > selftests/x86: Add a test to detect infinite sigtrap handler loop >
I tested the patches on a machine that supports FRED. The results are as expected: FRED on — no Fix => FAIL FRED off — no Fix => PASS FRED on — with Fix => PASS FRED off — with Fix => PASS Tested-by: Sohil Mehta <sohil.me...@intel.com> Though, I haven't tested the 32-bit version of the selftest. > arch/x86/include/asm/sighandling.h | 22 +++++ > arch/x86/kernel/signal_32.c | 4 + > arch/x86/kernel/signal_64.c | 4 + > tools/testing/selftests/x86/Makefile | 2 +- > tools/testing/selftests/x86/sigtrap_loop.c | 97 ++++++++++++++++++++++ > 5 files changed, 128 insertions(+), 1 deletion(-) > create mode 100644 tools/testing/selftests/x86/sigtrap_loop.c >
