From: "H. Peter Anvin" <hpa@zytor.com>
To: Borislav Petkov <bp@alien8.de>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86: tell the world boot_params is 16-byte aligned
Date: Fri, 08 May 2015 11:36:30 -0700 [thread overview]
Message-ID: <554D022E.6090503@zytor.com> (raw)
In-Reply-To: <20150508174054.GD3904@pd.tnic>
On 05/08/2015 10:40 AM, Borislav Petkov wrote:
> On Fri, May 08, 2015 at 09:26:49AM -0700, H. Peter Anvin wrote:
>> NAK. This could break in the case of careless bootloaders...
>
> Please elaborate. You mean, they'll go with the max alignment too and
> search boot_params there?
>
A careless bootloader may not align this data structure to any
particular alignment.
Of course, for x86 it doesn't matter too much, as it just hurts performance.
-hpa
prev parent reply other threads:[~2015-05-08 18:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-08 13:42 [PATCH] x86: tell the world boot_params is 16-byte aligned Rasmus Villemoes
2015-05-08 14:24 ` Borislav Petkov
2015-05-08 16:23 ` Rasmus Villemoes
2015-05-08 16:26 ` H. Peter Anvin
2015-05-08 17:40 ` Borislav Petkov
2015-05-08 18:36 ` H. Peter Anvin [this message]
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