From: Yinghai Lu <yinghai@kernel.org>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org
Subject: Re: [PATCH RFC] e820_remove_range fail?
Date: Mon, 29 Mar 2010 21:15:50 -0700 [thread overview]
Message-ID: <4BB17AF6.6090809@kernel.org> (raw)
In-Reply-To: <201003301238.43620.rusty@rustcorp.com.au>
On 03/29/2010 07:08 PM, Rusty Russell wrote:
> Hi Yinghai,
>
> I just wrote this patch for lguest, but I think the real problem is
> that e820_remove_range can't split a range. Is this a problem for
> real machines?
>
> [ 0.000000] BIOS-provided physical RAM map:
> [ 0.000000] LGUEST: 0000000000000000 - 0000000004000000 (usable)
> [ 0.000000] Notice: NX (Execute Disable) protection missing in CPU or disabled in BIOS!
> [ 0.000000] DMI not present or invalid.
> [ 0.000000] last_pfn = 0x3fa0 max_arch_pfn = 0x100000
> [ 0.000000] init_memory_mapping: 0000000000000000-0000000003fa0000
>
you are right, looks like e820_remove_region() missed that case.
will send out one patch.
Thanks
Yinghai Lu
next prev parent reply other threads:[~2010-03-30 4:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-30 2:08 [PATCH RFC] e820_remove_range fail? Rusty Russell
2010-03-30 4:15 ` Yinghai Lu [this message]
2010-03-30 5:38 ` [PATCH] x86: Make e820_remove_range to handle all covered case Yinghai Lu
2010-03-31 23:16 ` Rusty Russell
2010-04-01 1:00 ` [tip:x86/urgent] " tip-bot for Yinghai Lu
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