linux-kernel - Re: [PATCH v2 3/3] selftests/x86, x86/ldt: Add a selftest for modify

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Message-ID: <CALCETrVZ4Grk4Yz8HYFpXBQp06KberpHA58KEPH0MfYf2y2-5Q@mail.gmail.com>
Date:	Tue, 21 Jul 2015 15:34:04 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Boris Ostrovsky <boris.ostrovsky@...cle.com>
Cc:	Andy Lutomirski <luto@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	"security@...nel.org" <security@...nel.org>,
	X86 ML <x86@...nel.org>, Borislav Petkov <bp@...en8.de>,
	Sasha Levin <sasha.levin@...cle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Subject: Re: [PATCH v2 3/3] selftests/x86, x86/ldt: Add a selftest for modify_ldt

On Tue, Jul 21, 2015 at 3:02 PM, Boris Ostrovsky
<boris.ostrovsky@...cle.com> wrote:
> On 07/21/2015 03:59 PM, Andy Lutomirski wrote:
>>
>> diff --git a/tools/testing/selftests/x86/ldt_gdt.c
>> b/tools/testing/selftests/x86/ldt_gdt.c
>> new file mode 100644
>> index 000000000000..6f6699f0351a
>> --- /dev/null
>> +++ b/tools/testing/selftests/x86/ldt_gdt.c
>> @@ -0,0 +1,492 @@
>> +/*
>> + * ldt_gdt.c - Test cases for LDT and GDT access
>> + * Copyright (c) 2015 Andrew Lutomirski
>> + */
>> +
>> +#define _GNU_SOURCE
>> +#include <err.h>
>> +#include <stdio.h>
>> +#include <stdint.h>
>> +#include <signal.h>
>> +#include <setjmp.h>
>> +#include <string.h>
>> +#include <errno.h>
>> +#include <xmmintrin.h>
>
>
> Is xmmintrin.h necessary? It breaks 32-bit build with

no, and I'll remove it.

--Andy
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