Rounddown incoming addr on a page boundary. Without this, we may end up with a fork error for private, anonymous maps. The reason is, we use VirtualAlloc in this case which will potentially overcommit if addr is not on a page boundary. This isn't taken into account in bookkeeping, but fixup_mmaps_after_fork will eventually stumble over this when trying to reproduce the copy-on-write pages: VirtualQuery returns a region reaching beyond the supposedly allocated address range and from there it goes downhill. Signed-off-by: Corinna Vinschen <corinna@vinschen.de> |
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.. | ||
CVSChangeLogs.old | ||
cygserver | ||
cygwin | ||
doc | ||
lsaauth | ||
testsuite | ||
utils | ||
CONTRIBUTORS | ||
COPYING | ||
COPYING.LIB | ||
CYGWIN_LICENSE | ||
Makefile.common | ||
Makefile.in | ||
README | ||
acinclude.m4 | ||
aclocal.m4 | ||
autogen.sh | ||
c++wrap | ||
ccwrap | ||
config.guess | ||
config.sub | ||
configure | ||
configure.ac | ||
configure.cygwin | ||
install-sh |
README
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cygwin documentation is available on the net at https://cygwin.com You might especially be interested in https://cygwin.com/faq/faq.html#faq.programming.building-cygwin