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Date:      Tue, 30 Mar 2010 22:45:48 +0200
From:      Juergen Lock <nox@jelal.kn-bremen.de>
To:        Richard Henderson <rth@twiddle.net>
Cc:        qemu-devel@nongnu.org, Juergen Lock <nox@jelal.kn-bremen.de>, Blue Swirl <blauwirbel@gmail.com>, freebsd-emulation@freebsd.org, Andreas Tobler <andreast@fgznet.ch>, Toni <tonygio04@gmail.com>
Subject:   Re: [Qemu-devel] qemu git head 20100323 on FreeBSD - qemu-devel port update for testing
Message-ID:  <20100330204548.GA4359@triton8.kn-bremen.de>
In-Reply-To: <4BB2600B.90002@twiddle.net>
References:  <20100325204423.GA46954@triton8.kn-bremen.de> <f43fc5581003301104x77c0e527m871b035a7364bd5b@mail.gmail.com> <20100330191629.GA95521@triton8.kn-bremen.de> <201003302009.o2UK9lAv002282@triton8.kn-bremen.de> <4BB2600B.90002@twiddle.net>

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On Tue, Mar 30, 2010 at 01:33:15PM -0700, Richard Henderson wrote:
> On 03/30/2010 01:09 PM, Juergen Lock wrote:
> > Oh sorry if that was not clear, things go into swap if I _replace_ the
> > endaddr ~0ul (which caused the assert) with the max value the assert
> > still tolerates i.e.
> > 	((abi_ulong)1 << L1_MAP_ADDR_SPACE_BITS) - 1
> > which in this case seems to be 0x7fffffffffff:
> 
> Yes, I got that.  And I see from ...
> 
> > #3  0x0000000060012731 in page_set_flags (start=140737488224256, 
> >     end=18446744073709551615, flags=32)
> 
> ... here that the range we're reserving is
> 
>   0x7ffffffe0000 ... 0x7fffffffffff
> 
> which is a mere 128k range.  Which ought to allocate no more than
> a single leaf page table (and thus N-1 pages for the N-level table).
> 
> Which doesn't answer the question of why you'd wind up running out
> of memory.

Ah yeah our mails crossed each other :)  Yeah I don't know...

 Cheers,
	Juergen



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