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micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="PNmSiVhT5vUfc3R7" Content-Disposition: inline In-Reply-To: --PNmSiVhT5vUfc3R7 Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Fri, 19 Jan 2024 14:40:06 +0100 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Jan Beulich , Juergen Gross , Roger Pau =?utf-8?B?TW9ubsOp?= Cc: Patrick Plenefisch , xen-devel@lists.xenproject.org Subject: Re: E820 memory allocation issue on Threadripper platforms On Thu, Jan 18, 2024 at 01:23:56AM -0500, Patrick Plenefisch wrote: > On Wed, Jan 17, 2024 at 3:46=E2=80=AFAM Jan Beulich w= rote: > > On 17.01.2024 07:12, Patrick Plenefisch wrote: > > > As someone who hasn't built a kernel in over a decade, should I figure > > out > > > how to do a kernel build with CONFIG_PHYSICAL_START=3D0x2000000 and r= eport > > > back? > > > > That was largely a suggestion to perhaps allow you to gain some > > workable setup. It would be of interest to us largely for completeness. > > >=20 > Typo aside, setting the boot to 2MiB works! It works better for PV Are there any downsides of running kernel with CONFIG_PHYSICAL_START=3D0x200000? I can confirm it fixes the issue on another affected system, and if there aren't any practical downsides, I'm tempted to change it the default kernel in Qubes OS. --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab --PNmSiVhT5vUfc3R7 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmWqe7kACgkQ24/THMrX 1yxXwgf9FLeYuLDgT9jy6Me0tB/M2egM1T6lUv7HgLq87Al0Q8hshcL1VnGyWDmF phHifLuvxLEPk8F6A1ir0fNW63Qxryx3cu0KNcMOlrAg32jJl+JbB0qzKsZWLfUE N85fDlEccDHZX4aArGe39Qn65ipu9aG6+SCird1OKSec5Aae230joMxUp8JgR/PB /G1vcf/ujnZLCtuvD6xJWloPnT9s6XbyT6CheDZnNj7Yg9NjvK60e+Pncs9XeaHD TkqIlrzOrbqAc1cCYkmekkGWAOfN59Xcuiiic7AehTUngBgAZWEU/u78RDiQYNMD /BljlE7vUkDwIwiUGpb5xK/3TLuFrw== =t1m9 -----END PGP SIGNATURE----- --PNmSiVhT5vUfc3R7--