selftests/x86: Do not rely on "int $0x80" in single_step_syscall.c
authorDominik Brodowski <linux@dominikbrodowski.net>
Tue, 13 Feb 2018 08:13:21 +0000 (09:13 +0100)
committerIngo Molnar <mingo@kernel.org>
Thu, 15 Feb 2018 00:15:48 +0000 (01:15 +0100)
commit4105c69703cdeba76f384b901712c9397b04e9c2
tree80e6c5cadd40e65f4db7ddf7627e7bb7015c4e33
parent2cbc0d66de0480449c75636f55697c7ff3af61fc
selftests/x86: Do not rely on "int $0x80" in single_step_syscall.c

On 64-bit builds, we should not rely on "int $0x80" working (it only does if
CONFIG_IA32_EMULATION=y is enabled). To keep the "Set TF and check int80"
test running on 64-bit installs with CONFIG_IA32_EMULATION=y enabled, build
this test only if we can also build 32-bit binaries (which should be a
good approximation for that).

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dmitry Safonov <dsafonov@virtuozzo.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kselftest@vger.kernel.org
Cc: shuah@kernel.org
Link: http://lkml.kernel.org/r/20180211111013.16888-5-linux@dominikbrodowski.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
tools/testing/selftests/x86/Makefile
tools/testing/selftests/x86/single_step_syscall.c