From: Dave Jones <davej@codemonkey.org.uk>
To: xela@slit.de
Cc: hpa@zytor.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] zero-size E820 memory (kernel start-up failure)
Date: Fri, 20 Dec 2002 12:54:00 +0000 [thread overview]
Message-ID: <20021220125400.GB28068@suse.de> (raw)
In-Reply-To: <3E02F8E1.70509@slit.de>
On Fri, Dec 20, 2002 at 12:02:57PM +0100, Alexander Achenbach wrote:
> Up to 2.4.20, a zero-size E820 memory region (eg 0xa0000 - 0xa0000)
> reported by the BIOS causes 'sanitize_e820_map' to take the end of this
> region as the start of another region, producing two overlapping regions
> extending to the end of addressable memory. If the zero-size region is of
> a higher type than 'usable RAM' (eg 'reserved'), this causes all memory
> above the zero-size region to be marked unusable (leaving 640k as of the
> above example -- the kernel fails to start at all).
>
> The patch adds code to remove empty entries before sorting regions. It
> was generated for a 2.4.20 kernel.
Looks good to me. Care to do a similar patch for 2.5 ?
Dave
--
| Dave Jones. http://www.codemonkey.org.uk
| SuSE Labs
next prev parent reply other threads:[~2002-12-20 12:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-12-20 11:02 [PATCH] zero-size E820 memory (kernel start-up failure) Alexander Achenbach
2002-12-20 12:54 ` Dave Jones [this message]
2002-12-21 10:48 ` Alexander Achenbach
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