Date: Tue, 10 May 2022 10:01:55 +0900
From: Michael Paquier <michael@paquier.xyz>
To: Niyas Sait <niyas.sait@linaro.org>
Cc: Andres Freund <andres@anarazel.de>, Tom Lane <tgl@sss.pgh.pa.us>,
	Thomas Munro <thomas.munro@gmail.com>,
	Julien Rouhaud <rjuju123@gmail.com>,
	PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: [PATCH] Add native windows on arm64 support
Message-ID: <Ynm5g2152/yKc/0o@paquier.xyz>
References: <20220407172258.uj5lgd6k25sngeno@alap3.anarazel.de>
 <3385302.1649353369@sss.pgh.pa.us>
 <20220407175359.h7gzgmmnbicq75d6@alap3.anarazel.de>
 <CAFPTBD_+n3C_rrt9Y5mytaw0GJX+SAywMCgKfEpRxpLvzeSMrA@mail.gmail.com>
 <Yl9TmT/Jmz7i2umV@paquier.xyz>
 <CAFPTBD9qPsFMN_Y0HwR+2uRtQGfVnQRa-mxUnAu-MhyEnf8JHA@mail.gmail.com>
 <YmDYdiKlYP0D57ZH@paquier.xyz>
 <CAFPTBD8Mk0X3h0UhWDbN7dLf1-eFeqcE8Qe3SUKzH9b+Gj1kBg@mail.gmail.com>
 <YmX2nJyeykpODEsB@paquier.xyz>
 <CAFPTBD-+YT0wZTh_KJHK+G_DfA9+Y6FrkACkCFz8d4+BZjacuQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha512;
	protocol="application/pgp-signature"; boundary="Z//mCmHtk2/Fy24W"
Content-Disposition: inline
In-Reply-To: 
 <CAFPTBD-+YT0wZTh_KJHK+G_DfA9+Y6FrkACkCFz8d4+BZjacuQ@mail.gmail.com>
Archived-At: 
 <https://www.postgresql.org/message-id/Ynm5g2152/yKc/0o%40paquier.xyz>
Precedence: bulk


--Z//mCmHtk2/Fy24W
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Mon, May 09, 2022 at 12:44:22PM +0100, Niyas Sait wrote:
> Microsoft updated documentation [1] and clarified that ASLR cannot be
> disabled for Arm64 targets.
>=20
> Because ASLR can't be disabled on ARM, ARM64, or ARM64EC architectures,
> > /DYNAMICBASE:NO isn't supported for these targets.

Better than nothing, I guess, though this does not stand as a reason
explaining why this choice has been made.  And it looks like we will
never know.  We are going to need more advanced testing to check that
DYNAMICBASE is stable enough if we begin to enable it.  Perhaps we
should really look at that for all the build targets we currently
support rather than just ARM, for the most modern Win32 environments
if we are going to cut support for most of the oldest releases..
--
Michael

--Z//mCmHtk2/Fy24W
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQIzBAABCgAdFiEEG72nH6vTowiyblFKnvQgOdbyQH0FAmJ5uYMACgkQnvQgOdby
QH2CbA//Qc+kEWCN1tD8dc+LMFcA1IFxJED18nnwUajeR1+vPgdphNhH24LeKSQN
mTxAgLY1Co3hS9yOwEpvfGf1TY3Qpi/ab+on1sAgpw+Z6eZl8P/VbmcRzuXDvmOM
6PAmmNz7nXuRWseQNCcCIc0vBmmGAmNfza+WTIC8+ULcIXsPUQF9XuRVxAQbV+uC
6E7jOHLAqYgooKVG40pxzCwFKP7NcVfx1mOTMtSs5aURyG5LEDCRoGMXO9LrRHcF
eZF/pNnWaMBPSSCHb40JmnrpLde8H7ukyqEKdWHopRJS88R9WWGFTUgVamyzllLn
5PHvMuSbVAygXBBXSxRTDTxt8QpxYC3je9RqaGnlqACSmJNClGPYnxqd8/cVlqvJ
E4ij2qAFHscJ8s/syJ2CdrdUfoXboPCxYseemVYNmsZt4uhDSb5UEZ9fOuXMjxB+
xqMMuzLAnbp/STlZJWIEXllnc2RM7Zy3U5zzrO696XI7G8AWPwP/x/jQeqhHmFGk
+3m7n+ot0CLSJng9Ms1RJJLu8lmnWYyS9Q4UU5OsaHz6jbnxRbHp+/XzbXCWbfHH
vPhTHqpyfEE2iljGzXl0O5KO8JrB/G0i76UGFSjmDpaTkpK/vxAPbcXD13IwA8LX
JvOjq1D+QVy57Esmep9CI7BLZd0+UirOd+y4eOxP3aTTVtqelDU=
=Lpy9
-----END PGP SIGNATURE-----

--Z//mCmHtk2/Fy24W--