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| From: | Gerd Hoffmann |
| Subject: | Re: [Qemu-devel] [PATCH] Permit zero-sized qemu_malloc() & friends |
| Date: | Tue, 01 Dec 2009 15:53:13 +0100 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20090922 Fedora/3.0-3.9.b4.fc12 Lightning/1.0pre Thunderbird/3.0b4 |
On 12/01/09 15:34, Avi Kivity wrote:
On 12/01/2009 02:40 PM, Gerd Hoffmann wrote:Even more advanced: Make zero_length_malloc page-sized and page-aligned, then munmap int, so dereferencing it actually traps.That will cause vma fragmentation.
I was thinking about a single unmapped page, which wouldn't cause fragmentation. But that is a bad idea too for other reasons ...
cheers, Gerd
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