linux/tools/testing/selftests/x86
Andy Lutomirski 0f672809f9 selftests/x86: Disable the ldt_gdt_64 test for now
ldt_gdt.c relies on cross-cpu invalidation of SS to do one of
its tests.  On 32-bit builds, this works fine, but on 64-bit
builds, it only works if the kernel has proper SS sigcontext
handling for 64-bit user programs.

Since the SS fixes are currently reverted, restrict the test
case to 32 bits for now.

In principle, I could change the test to use a different segment
register, but it would be messy: CS can't point to the LDT for
64-bit code, and the other registers don't result in immediate
faults because they aren't reloaded on kernel -> user
transitions.

When we fix sigcontext (in 4.6?), we can revert this.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shuah Khan <shuahkh@osg.samsung.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/231591d9122d282402d8f53175134f8db5b3bc73.1452561752.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-01-12 11:09:26 +01:00
..
.gitignore
check_cc.sh selftests, x86: Rework x86 target architecture detection 2015-05-12 20:02:40 -06:00
entry_from_vm86.c selftests/x86: Add a fork() to entry_from_vm86 to catch fork bugs 2015-10-31 09:50:25 +01:00
ldt_gdt.c selftests/x86, x86/ldt: Add a selftest for modify_ldt() 2015-07-31 10:24:37 +02:00
Makefile selftests/x86: Disable the ldt_gdt_64 test for now 2016-01-12 11:09:26 +01:00
ptrace_syscall.c selftests/x86: Add a test for ptrace syscall restart and arg modification 2015-10-07 11:34:07 +02:00
raw_syscall_helper_32.S selftests/x86: Add a test for ptrace syscall restart and arg modification 2015-10-07 11:34:07 +02:00
sigreturn.c
single_step_syscall.c x86, selftests: Add single_step_syscall test 2015-04-16 12:41:49 +02:00
syscall_arg_fault.c x86/entry, selftests/x86: Add a test for 32-bit fast syscall arg faults 2015-07-07 10:58:30 +02:00
syscall_nt.c selftests/x86: Add syscall_nt selftest 2015-08-18 09:43:38 +02:00
sysret_ss_attrs.c x86, selftests: Add a test for the "sysret_ss_attrs" bug 2015-05-08 13:33:59 +02:00
test_FCMOV.c x86/fpu/math-emu, selftests: Add tests for FCMOV and FCOMI insns 2015-09-20 10:19:52 +02:00
test_FCOMI.c x86/fpu/math-emu, selftests: Add tests for FCMOV and FCOMI insns 2015-09-20 10:19:52 +02:00
test_FISTTP.c x86/fpu/math-emu, selftests: Add test for FISTTP instructions 2015-09-20 16:19:01 +02:00
test_syscall_vdso.c x86/asm/entry/32, selftests: Add 'test_syscall_vdso' test 2015-09-18 09:40:48 +02:00
thunks_32.S x86/asm/entry/32, selftests: Add 'test_syscall_vdso' test 2015-09-18 09:40:48 +02:00
thunks.S x86, selftests: Add a test for the "sysret_ss_attrs" bug 2015-05-08 13:33:59 +02:00
trivial_32bit_program.c selftests, x86: Rework x86 target architecture detection 2015-05-12 20:02:40 -06:00
trivial_64bit_program.c selftest, x86: fix incorrect comment 2015-05-26 15:58:41 -06:00
unwind_vdso.c selftests/x86: Style fixes for the 'unwind_vdso' test 2015-10-14 16:56:28 +02:00