From: Eli Zaretskii <eliz@gnu.org>
To: "Gerd Möllmann" <gerd.moellmann@gmail.com>
Cc: eller.helmut@gmail.com, acorallo@gnu.org, emacs-devel@gnu.org
Subject: Re: MPS codegen
Date: Sat, 15 Jun 2024 10:46:17 +0300 [thread overview]
Message-ID: <868qz6wsvq.fsf@gnu.org> (raw)
In-Reply-To: <m2ikyamzw3.fsf@pro2.fritz.box> (message from Gerd Möllmann on Sat, 15 Jun 2024 09:25:00 +0200)
> From: Gerd Möllmann <gerd.moellmann@gmail.com>
> Cc: Helmut Eller <eller.helmut@gmail.com>, acorallo@gnu.org,
> emacs-devel@gnu.org
> Date: Sat, 15 Jun 2024 09:25:00 +0200
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> > In glibc, this function is implemented using madvise(2).
> > However, since glibc 2.6, POSIX_MADV_DONTNEED is treated as a no-
> > op, because the corresponding madvise(2) value, MADV_DONTNEED,
> > has destructive semantics.
> >
> > So to do on Posix systems the same as we do on Windows, I think we
> > need to call madvise with MADV_DONTNEED, even if posix_madvise is
> > available, and also call mmap with PROT_NONE. Do you agree? If we do
> > that, does the GNU/Linux build still work, or does it also crash on
> > startup?
>
> I still think we should first establish that that is indeed the problem.
> Please see my other mail.
Since you insist: I ifdef'ed away this:
#if 0
/* Release the commit charge for the mapping. */
DWORD old_prot;
(void) VirtualProtect (mem, size, PAGE_NOACCESS, &old_prot);
#endif
and, lo and behold, Emacs can now start without a problem.
I hope this establishes the fact that we are still accessing memory
from the "discarded" pdumper block.
Now what?
next prev parent reply other threads:[~2024-06-15 7:46 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-10 13:39 MPS: Update Gerd Möllmann
2024-06-10 16:17 ` Andrea Corallo
2024-06-10 16:26 ` Gerd Möllmann
2024-06-10 16:44 ` Gerd Möllmann
2024-06-10 20:58 ` Andrea Corallo
2024-06-11 3:12 ` Gerd Möllmann
2024-06-11 20:35 ` Helmut Eller
2024-06-12 4:45 ` Gerd Möllmann
2024-06-12 7:54 ` Eli Zaretskii
2024-06-12 8:00 ` Gerd Möllmann
2024-06-13 9:07 ` MPS codegen (was: MPS: Update) Helmut Eller
2024-06-13 12:33 ` MPS codegen Gerd Möllmann
2024-06-13 17:48 ` Helmut Eller
2024-06-13 18:24 ` Gerd Möllmann
2024-06-13 18:31 ` Gerd Möllmann
2024-06-13 18:38 ` Helmut Eller
2024-06-13 18:54 ` Gerd Möllmann
2024-06-13 19:15 ` Helmut Eller
2024-06-13 19:37 ` Gerd Möllmann
2024-06-14 6:37 ` Eli Zaretskii
2024-06-14 7:30 ` Gerd Möllmann
2024-06-14 7:56 ` Gerd Möllmann
2024-06-14 10:52 ` Eli Zaretskii
2024-06-14 10:46 ` Eli Zaretskii
2024-06-13 23:09 ` Andrea Corallo
2024-06-14 6:08 ` Gerd Möllmann
2024-06-14 7:45 ` Helmut Eller
2024-06-14 7:59 ` Gerd Möllmann
2024-06-14 8:28 ` Gerd Möllmann
2024-06-14 8:51 ` Helmut Eller
2024-06-14 11:32 ` Eli Zaretskii
2024-06-14 12:43 ` Gerd Möllmann
2024-06-14 13:04 ` Eli Zaretskii
2024-06-14 13:17 ` Gerd Möllmann
2024-06-14 13:46 ` Eli Zaretskii
2024-06-14 14:05 ` Gerd Möllmann
2024-06-14 14:33 ` Eli Zaretskii
2024-06-14 14:46 ` Gerd Möllmann
2024-06-14 16:30 ` Helmut Eller
2024-06-14 18:28 ` Eli Zaretskii
2024-06-14 19:03 ` Eli Zaretskii
2024-06-14 19:26 ` Helmut Eller
2024-06-14 19:50 ` Gerd Möllmann
2024-06-15 6:26 ` Eli Zaretskii
2024-06-15 7:10 ` Gerd Möllmann
2024-06-15 7:34 ` Eli Zaretskii
2024-06-15 8:22 ` Gerd Möllmann
2024-06-15 6:11 ` Eli Zaretskii
2024-06-15 7:25 ` Gerd Möllmann
2024-06-15 7:46 ` Eli Zaretskii [this message]
2024-06-15 8:14 ` Gerd Möllmann
2024-06-15 8:38 ` Gerd Möllmann
2024-06-15 8:44 ` Helmut Eller
2024-06-15 8:56 ` Gerd Möllmann
2024-06-15 9:07 ` Helmut Eller
2024-06-15 9:27 ` Gerd Möllmann
2024-06-15 12:33 ` Gerd Möllmann
2024-06-16 6:16 ` Gerd Möllmann
2024-06-16 7:53 ` Eli Zaretskii
2024-06-16 8:19 ` Gerd Möllmann
2024-06-16 8:40 ` Helmut Eller
2024-06-16 8:49 ` Gerd Möllmann
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