Messages in this thread Patch in this message | | | From | Andy Lutomirski <> | Subject | [PATCH 4/5] selftests/x86/ldt_gdt: Run most existing LDT test cases against the GDT as well | Date | Sat, 4 Nov 2017 04:19:51 -0700 |
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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 <luto@kernel.org> --- 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 337f217d0ae9..05d0d6f49c2c 100644 --- a/tools/testing/selftests/x86/ldt_gdt.c +++ b/tools/testing/selftests/x86/ldt_gdt.c @@ -188,7 +188,15 @@ 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) -- 2.13.6
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