GNU bug report logs - #36649
27.0.50; pure space and pdumper

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Message #331 received at 36649 <at> debbugs.gnu.org (full text, mbox):

From: Po Lu <luangruo <at> yahoo.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 36649 <at> debbugs.gnu.org, larsi <at> gnus.org, monnier <at> iro.umontreal.ca,
 pipcet <at> gmail.com
Subject: Re: bug#36649: 27.0.50; pure space and pdumper
Date: Sat, 02 Jul 2022 18:55:09 +0800

Eli Zaretskii <eliz <at> gnu.org> writes:

> The C library and the environment used by the MS-DOS port do have
> mprotect, but it is only supported with some DPMI servers, and the
> MS-Windows DPMI server is not one of them.

Too bad.  That means MS-DOS will have to do with the old garbage
collector.

> But I don't think this is too relevant, since memory protection in
> MS-DOS is more or less a no-op.

For incremental garbage collection to work, Emacs needs to be able to
place memory protection on "blocks" of objects allocated to align with a
page start, in order to receive a signal when a write to an object in
such a block happens.

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