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Date:      Thu, 03 Nov 2011 15:57:02 -0500
From:      Alan Cox <alc@rice.edu>
To:        =?windows-1251?Q?=CA=EE=ED=FC=EA=EE=E2_=C5=E2=E3=E5=ED=E8=E9?= <kes-kes@yandex.ru>
Cc:        alc@FreeBSD.org, freebsd-bugs@FreeBSD.org, Remko Lodder <remko@elvandar.org>
Subject:   Re: kern/161721: [boot] compiling kernel with KVA_PAGES=512 does not allow system to boot
Message-ID:  <4EB3001E.5080701@rice.edu>
In-Reply-To: <1131953110.20111103214341@yandex.ru>
References:  <201110181827.p9IIRGtG004577@freefall.freebsd.org> <1122501234.20111019215502@yandex.ru> <13D22030-AEB8-4E1A-940C-FA532480FF90@elvandar.org> <4EA05A2E.7060705@rice.edu> <513697747.20111020222559@yandex.ru> <1131953110.20111103214341@yandex.ru>

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On 11/3/2011 2:43 PM, Коньков Евгений wrote:
> Hi
>
>> Have you ever tried a slightly smaller setting for KVA_PAGES, for example, 508?
>> Remko,
> with this KVA_PAGES it is worked.
>

Ok, that supports the hypothesis that with 512 KVA pages, or 2 GB of 
kernel virtual address space, that a 32-bit integer overflow is 
occurring in the kmem map sizing.  I'll try to take a look at this over 
the weekend.

Alan




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