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From: Pekka Enberg <penberg@iki.fi>
To: Linn Crosetto <linn@hp.com>
Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
	x86@kernel.org, paulmck@linux.vnet.ibm.com, dhowells@redhat.com,
	mtk.manpages@gmail.com, yinghai@kernel.org, penberg@kernel.org,
	jacob.shin@amd.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] x86: avoid remapping data in parse_setup_data()
Date: Wed, 14 Aug 2013 09:26:47 +0300	[thread overview]
Message-ID: <520B2327.9080404@iki.fi> (raw)
In-Reply-To: <1376430401-67445-1-git-send-email-linn@hp.com>

On 8/14/13 12:46 AM, Linn Crosetto wrote:
> Type SETUP_PCI, added by setup_efi_pci(), may advertise a ROM size
> larger than early_memremap() is able to handle, which is currently
> limited to 256kB. If this occurs it leads to a NULL dereference in
> parse_setup_data().
>
> To avoid this, remap the setup_data header and allow parsing functions
> for individual types to handle their own data remapping.
>
> Signed-off-by: Linn Crosetto <linn@hp.com>

Reviewed-by: Pekka Enberg <penberg@kernel.org>

  parent reply	other threads:[~2013-08-14  6:37 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-12 21:00 [PATCH] x86: selective remapping in parse_setup_data() Linn Crosetto
2013-08-12 21:08 ` H. Peter Anvin
2013-08-12 23:01   ` [PATCH v2] " Linn Crosetto
2013-08-12 23:30     ` Yinghai Lu
2013-08-13 21:46     ` [PATCH v3] x86: avoid remapping data " Linn Crosetto
2013-08-13 22:22       ` Yinghai Lu
2013-08-14  6:26       ` Pekka Enberg [this message]
2013-09-01 11:40       ` [tip:x86/mm] " tip-bot for Linn Crosetto
2013-09-01 23:15       ` [PATCH v3] " H. Peter Anvin
2013-09-06 18:06         ` [PATCH 0/3] x86/mm: fix early_memremap() sparse warnings Linn Crosetto
2013-09-06 18:06           ` [PATCH 1/3] x86/mm: fix sparse warnings from early_memremap() Linn Crosetto
2013-09-06 18:06           ` [PATCH 2/3] x86: fix sparse warning in parse_e820_ext() Linn Crosetto
2013-09-06 18:06           ` [PATCH 3/3] x86: fix early_iounmap() sparse warnings in setup.c Linn Crosetto

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