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From: Jamie Lokier <jamie@shareable.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: [PATCH 1/6] Use correct types to enable > 2G support
Date: Fri, 1 Feb 2008 17:35:40 +0000	[thread overview]
Message-ID: <20080201173540.GA14032@shareable.org> (raw)
In-Reply-To: <47A308DB.3040204@gmail.com>

Robert William Fuller wrote:
> Linux doesn't commit mapped memory until it's faulted.  As for other 
> platforms, who knows?

Correction: most Linux installations don't commit mapped memory until
it's faulted.  A few do, as a matter of policy (it depends on kernel
settings), so that applications won't randomly crash when too much
memory is faulted, but will return 0 from malloc() earlier.

For those few systems, use MAP_NORESERVE if you still need to allocate
the address space.

-- Jamie

  parent reply	other threads:[~2008-02-01 19:07 UTC|newest]

Thread overview: 66+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-31 22:36 [PATCH 0/6] Support for the Kernel Virtual Machine interface Anthony Liguori
2008-01-31 22:36 ` [Qemu-devel] " Anthony Liguori
     [not found] ` <1201818980-27534-1-git-send-email-aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-01-31 22:36   ` [PATCH 1/6] Use correct types to enable > 2G support Anthony Liguori
2008-01-31 22:36     ` [Qemu-devel] " Anthony Liguori
     [not found]     ` <1201818980-27534-2-git-send-email-aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-01-31 23:54       ` Paul Brook
2008-01-31 23:54         ` [Qemu-devel] " Paul Brook
     [not found]         ` <200801312354.24382.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2008-02-01  0:25           ` Anthony Liguori
2008-02-01  0:25             ` [Qemu-devel] " Anthony Liguori
     [not found]             ` <47A26714.4000204-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01  0:37               ` Paul Brook
2008-02-01  0:37                 ` [Qemu-devel] " Paul Brook
     [not found]                 ` <200802010037.30731.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2008-02-01  0:40                   ` Anthony Liguori
2008-02-01  0:40                     ` [Qemu-devel] " Anthony Liguori
2008-02-01 10:26       ` Fabrice Bellard
2008-02-01 10:26         ` [Qemu-devel] " Fabrice Bellard
     [not found]         ` <47A2F3C7.6060409-+Yn2HnRVxb5AfugRpC6u6w@public.gmane.org>
2008-02-01 14:35           ` Anthony Liguori
2008-02-01 14:35             ` [Qemu-devel] " Anthony Liguori
     [not found]             ` <47A32E40.3000204-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01 15:13               ` Avi Kivity
2008-02-01 15:13                 ` [Qemu-devel] " Avi Kivity
2008-02-01 11:56                 ` Robert William Fuller
2008-02-01 16:09                   ` M. Warner Losh
2008-02-01 16:47                     ` Philip Boulain
2008-02-01 17:35                   ` Jamie Lokier [this message]
     [not found]                 ` <47A33721.4020600-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-02-01 15:33                   ` Anthony Liguori
2008-02-01 15:33                     ` [Qemu-devel] Re: [kvm-devel] " Anthony Liguori
     [not found]                     ` <47A33BC6.3060705-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01 15:40                       ` [Qemu-devel] " Ian Jackson
2008-02-01 15:40                         ` [Qemu-devel] Re: [kvm-devel] " Ian Jackson
     [not found]                         ` <18339.15712.411486.395238-msK/Ju9w1zmnROeE8kUsYhEHtJm+Wo+I@public.gmane.org>
2008-02-01 17:53                           ` [Qemu-devel] " Anthony Liguori
2008-02-01 17:53                             ` [kvm-devel] " Anthony Liguori
     [not found]                             ` <47A35C7E.8050309-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2008-02-01 17:57                               ` Daniel P. Berrange
2008-02-01 17:57                                 ` [kvm-devel] " Daniel P. Berrange
     [not found]                                 ` <20080201175750.GD22981-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2008-02-01 20:31                                   ` Anthony Liguori
2008-02-01 20:31                                     ` [kvm-devel] " Anthony Liguori
2008-02-01 21:33                                     ` [kvm-devel] " Paul Brook
2008-02-01 21:33                                       ` [kvm-devel] [Qemu-devel] " Paul Brook
2008-02-01 16:00               ` Paul Brook
2008-02-01 16:00                 ` [Qemu-devel] " Paul Brook
     [not found]                 ` <200802011600.10877.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2008-02-01 16:21                   ` Fabrice Bellard
2008-02-01 16:21                     ` [Qemu-devel] " Fabrice Bellard
     [not found]                     ` <47A3471B.7030702-+Yn2HnRVxb5AfugRpC6u6w@public.gmane.org>
2008-02-05 11:34                       ` Ian Jackson
2008-02-05 11:34                         ` Ian Jackson
2008-02-01 17:49                 ` [kvm-devel] " Anthony Liguori
2008-02-01 17:49                   ` [Qemu-devel] " Anthony Liguori
2008-02-03  8:58       ` Izik Eidus
2008-02-03  8:58         ` [Qemu-devel] Re: [kvm-devel] " Izik Eidus
2008-01-31 22:36   ` [PATCH 2/6] SCI fixes Anthony Liguori
2008-01-31 22:36     ` [Qemu-devel] " Anthony Liguori
2008-01-31 22:36   ` [PATCH 3/6] Fix daemonize options Anthony Liguori
2008-01-31 22:36     ` [Qemu-devel] " Anthony Liguori
2008-01-31 22:36   ` [PATCH 4/6] Tell BIOS about the number of CPUs Anthony Liguori
2008-01-31 22:36     ` [Qemu-devel] " Anthony Liguori
     [not found]     ` <1201818980-27534-5-git-send-email-aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01  0:14       ` Paul Brook
2008-02-01  0:14         ` [Qemu-devel] " Paul Brook
     [not found]         ` <200802010014.07960.paul-qD8j1LwMmJjtCj0u4l0SBw@public.gmane.org>
2008-02-01  0:28           ` Anthony Liguori
2008-02-01  0:28             ` [Qemu-devel] " Anthony Liguori
     [not found]             ` <47A26790.6010609-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01  0:40               ` Paul Brook
2008-02-01  0:40                 ` [Qemu-devel] " Paul Brook
2008-01-31 22:36   ` [PATCH 5/6] Refactor option ROM loading Anthony Liguori
2008-01-31 22:36     ` [Qemu-devel] " Anthony Liguori
2008-01-31 22:36   ` [PATCH 6/6] QEMU support for the Kernel Virtual Machine interface Anthony Liguori
2008-01-31 22:36     ` [Qemu-devel] " Anthony Liguori
     [not found]     ` <1201818980-27534-7-git-send-email-aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-02-01  9:49       ` Fabrice Bellard
2008-02-01  9:49         ` [Qemu-devel] " Fabrice Bellard
     [not found]         ` <47A2EB14.8030804-+Yn2HnRVxb5AfugRpC6u6w@public.gmane.org>
2008-02-01 14:18           ` Anthony Liguori
2008-02-01 14:18             ` [Qemu-devel] " Anthony Liguori
2008-01-31 22:53   ` [qemu-devel] [PATCH 0/6] Support " Anthony Liguori
2008-01-31 22:53     ` Anthony Liguori

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