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From: "H. Peter Anvin" <hpa@zytor.com>
To: Yinghai Lu <yinghai@kernel.org>
Cc: Kees Cook <keescook@chromium.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	the arch/x86 maintainers <x86@kernel.org>,
	Seiji Aguchi <seiji.aguchi@hds.com>,
	Fenghua Yu <fenghua.yu@intel.com>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	Suresh Siddha <suresh.b.siddha@intel.com>,
	PaX Team <pageexec@gmail.com>
Subject: Re: [PATCH v5] x86: make sure IDT is page aligned
Date: Tue, 16 Jul 2013 15:16:58 -0700	[thread overview]
Message-ID: <51E5C65A.9010605@zytor.com> (raw)
In-Reply-To: <CAE9FiQW-3H=rx-VewjMQjx2EOwcyDt351aQ0wnP8op6ZLViZag@mail.gmail.com>

On 07/16/2013 03:13 PM, Yinghai Lu wrote:
> 
> ok, then should change
> 
>> +/* No need to be aligned, but done to keep all IDTs defined the same way. */
>> +gate_desc trace_idt_table[NR_VECTORS] __page_aligned_bss;
> 
> ==>
> 
>> +/* Only need to be cacheline aligned, but keep all IDTs defined the same way to be page aligned. */
>> +gate_desc trace_idt_table[NR_VECTORS] __page_aligned_bss;

It doesn't need to be cacheline aligned, either, to the best of my
knowledge.  The former comment is more correct.

	-hpa


  reply	other threads:[~2013-07-16 22:17 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-16 18:34 [PATCH v5] x86: make sure IDT is page aligned Kees Cook
2013-07-16 18:58 ` Steven Rostedt
2013-07-16 20:21 ` Yinghai Lu
2013-07-16 20:28   ` Kees Cook
2013-07-16 20:33     ` Steven Rostedt
2013-07-16 20:43       ` H. Peter Anvin
2013-07-16 20:47       ` Kees Cook
2013-07-16 22:03         ` H. Peter Anvin
2013-07-16 22:13           ` Yinghai Lu
2013-07-16 22:16             ` H. Peter Anvin [this message]
2013-07-16 23:39               ` Yinghai Lu
2013-07-16 23:43                 ` H. Peter Anvin
2013-07-16 23:59                   ` Yinghai Lu
2013-07-16 22:33 ` [tip:x86/urgent] x86: Make " tip-bot for Kees Cook
2013-07-17 18:57   ` Yinghai Lu
2013-07-17 19:57     ` H. Peter Anvin
2013-07-18  7:05       ` Ingo Molnar

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