From: Ingo Molnar <mingo@kernel.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@kernel.org>,
x86@kernel.org, Mario Limonciello <mario_limonciello@dell.com>,
Matthew Garrett <mjg59@srcf.ucam.org>,
linux-kernel@vger.kernel.org, Kees Cook <keescook@chromium.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH] x86/boot: Reorganize and clean up the BIOS area reservation code
Date: Thu, 21 Jul 2016 11:11:32 +0200 [thread overview]
Message-ID: <20160721091132.GA22986@gmail.com> (raw)
In-Reply-To: <92DA2E2A-BCD9-4198-A983-395A06388688@zytor.com>
* H. Peter Anvin <hpa@zytor.com> wrote:
> We already reserve the first megabyte by default. There is something really
> bizarre about this; the bug report simply doesn't seem to make any sense.
Maybe the first megabyte reservation happens after the SMP trampoline allocation
and hence the EBDA/BIOS reservation matters to our ability to allocate the SMP
trampoline specifically?
Anyway, agreed that we need more information.
Thanks,
Ingo
next prev parent reply other threads:[~2016-07-21 9:11 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-21 1:32 [PATCH] x86/ebda: If the EBDA is in lowmem, reserve only 4k for the EBDA Andy Lutomirski
2016-07-21 8:14 ` [PATCH] x86/boot: Reorganize and clean up the BIOS area reservation code Ingo Molnar
2016-07-21 8:29 ` H. Peter Anvin
2016-07-21 9:11 ` Ingo Molnar [this message]
2016-07-21 12:32 ` H. Peter Anvin
2016-07-21 9:14 ` Ingo Molnar
2016-07-21 8:31 ` Ingo Molnar
2016-07-21 14:58 ` Andy Lutomirski
2016-07-21 16:18 ` Ingo Molnar
2016-07-21 21:08 ` Andy Lutomirski
2016-07-21 21:28 ` H. Peter Anvin
2016-07-21 21:48 ` Andy Lutomirski
2016-07-21 22:45 ` Andy Lutomirski
2016-07-22 13:00 ` Matt Fleming
2016-07-23 1:16 ` Linus Torvalds
2016-07-26 0:41 ` Andy Lutomirski
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