Commit-ID: adedf2893c192dd09b1cc2f2dcfdd7cad99ec49d Gitweb: https://git.kernel.org/tip/adedf2893c192dd09b1cc2f2dcfdd7cad99ec49d Author: Andy Lutomirski <[email protected]> AuthorDate: Sat, 4 Nov 2017 04:19:51 -0700 Committer: Ingo Molnar <[email protected]> CommitDate: Tue, 7 Nov 2017 11:13:43 +0100
selftests/x86/ldt_gdt: Run most existing LDT test cases against the GDT as well Now that the main test infrastructure supports the GDT, run tests that will pass the kernel's GDT permission tests against the GDT. Signed-off-by: Andy Lutomirski <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/686a1eda63414da38fcecc2412db8dba1ae40581.1509794321.git.l...@kernel.org Signed-off-by: Ingo Molnar <[email protected]> --- tools/testing/selftests/x86/ldt_gdt.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/x86/ldt_gdt.c b/tools/testing/selftests/x86/ldt_gdt.c index 45f3024..3bb42ff 100644 --- a/tools/testing/selftests/x86/ldt_gdt.c +++ b/tools/testing/selftests/x86/ldt_gdt.c @@ -189,7 +189,15 @@ static bool install_valid_mode(const struct user_desc *d, uint32_t ar, static bool install_valid(const struct user_desc *desc, uint32_t ar) { - return install_valid_mode(desc, ar, false, true); + bool ret = install_valid_mode(desc, ar, false, true); + + if (desc->contents <= 1 && desc->seg_32bit && + !desc->seg_not_present) { + /* Should work in the GDT, too. */ + install_valid_mode(desc, ar, false, false); + } + + return ret; } static void install_invalid(const struct user_desc *desc, bool oldmode)
