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Re: [Qemu-devel] [PATCH] Permit zero-sized qemu_malloc() & friends


From: Avi Kivity
Subject: Re: [Qemu-devel] [PATCH] Permit zero-sized qemu_malloc() & friends
Date: Tue, 01 Dec 2009 16:34:51 +0200
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 Thunderbird/3.0b4

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. Since we don't trap malloc(n)[n] for n > 0, we may as well not trap it for n = 0.

--
error compiling committee.c: too many arguments to function





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