Commit adedf289 authored Nov 04, 2017 by Andy Lutomirski Committed by Ingo Molnar Nov 07, 2017

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 <luto@kernel.org>
Cc: Borislav Petkov <bpetkov@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/686a1eda63414da38fcecc2412db8dba1ae40581.1509794321.git.luto@kernel.org


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent d744dcad

tools/testing/selftests/x86/ldt_gdt.c

+9 −1

Original line number	Diff line number	Diff line
		@@ -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)