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b=dPeZ/mlY4OrUZPKsl2VqL2+xzZJ4OWRg1MGO0h9pR+Je ZhYq2Enz1fTOYgKQreVTMsfKV1SyhuuTRdLmAttfC2i8uCuGQUlVS5fW9lfLv9OX bEgz61Rt31/qQku9zo/7SQHpSSC+/4WF7mbFB8l0/p050KixtFEkvLUT3yuPaM6t JQSb8qJPYXGrpw6AsZtvlnkqsIssm8dTP5hcEFXavPsnZLIhFGUElKOJxLeTkOZf 4BKteIWD3OFmtLcaIoWY2rZtszWazdbCSahfduZoe+bfRmjo48zyGVOeuJ/+xGR2 UFD9n8Ll/ooUV2Kf9QlsCPnm8ChRcj4G494lqQIm/Q== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvgedriedvgdejkecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpeffhffvvefukfhfgggtuggjsehgtderredttdejnecuhfhrohhmpeforghrvghk ucforghrtgiihihkohifshhkihdqifpkrhgvtghkihcuoehmrghrmhgrrhgvkhesihhnvh hishhisghlvghthhhinhhgshhlrggsrdgtohhmqeenucggtffrrghtthgvrhhnpefhffff iefhgffgvddtledukeelteeiiefggeeftdfgvefgiefgjeeljefgleeigfenucffohhmrg hinheptghithhrihigrdgtohhmnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghm pehmrghilhhfrhhomhepmhgrrhhmrghrvghksehinhhvihhsihgslhgvthhhihhnghhslh grsgdrtghomh X-ME-Proxy: Feedback-ID: i1568416f:Fastmail Date: Thu, 24 Nov 2022 06:15:15 +0100 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Roger Pau Monne Cc: xen-devel@lists.xenproject.org, Jan Beulich , Andrew Cooper , Wei Liu , George Dunlap , Julien Grall , Stefano Stabellini Subject: Re: [PATCH 0/5] gfx: improvements when using multiboot2 and EFI + misc Message-ID: References: <20221123154525.63068-1-roger.pau@citrix.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="uzfpZsZBiGb3GVj9" Content-Disposition: inline In-Reply-To: <20221123154525.63068-1-roger.pau@citrix.com> --uzfpZsZBiGb3GVj9 Content-Type: text/plain; protected-headers=v1; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Date: Thu, 24 Nov 2022 06:15:15 +0100 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= To: Roger Pau Monne Cc: xen-devel@lists.xenproject.org, Jan Beulich , Andrew Cooper , Wei Liu , George Dunlap , Julien Grall , Stefano Stabellini Subject: Re: [PATCH 0/5] gfx: improvements when using multiboot2 and EFI + misc On Wed, Nov 23, 2022 at 04:45:19PM +0100, Roger Pau Monne wrote: > Marek: after this series using console=3D without the vga option should > result in Xen not attempting to touch the selected GOP mode and the > screen not getting cleared. Thanks, this seems to work mostly fine. There is one message printed from setup_efi_pci(): ... ROM ... bytes at ... I'm not sure what to do about this one (although for Qubes, I can simply patch it out ;) ). But to get dom0 display image from BGRT, it seems something else is needed too. Linux complains "Incorrect checksum in table [BGRT]". The only relevant google result I get is this: https://support.citrix.com/artic= le/CTX460227/citrix-hypervisor-acpi-warning-incorrect-checksum-in-table-bgrt It blames firmware. But then, it's suspicious that it's also about Xen. And also, native Linux on the same hw does not complain about the checksum. So, I think it's rather Xen to blame... The table lives in area marked as EfiACPIReclaimMemory in memory map, so I think it shouldn't be clobbered by Xen, at least in theory. I'll look into it later. It's getting off-topic for this thread anyway. --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab --uzfpZsZBiGb3GVj9 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAmN+/eMACgkQ24/THMrX 1yymDwf9HEWHg0V/rEgq5bRglQHh22n0dIjzKO4m1YWL9zIeNhhR9Cd2BXrSwaDb tvCZw4i75mCZ6WkJs6aLZCWbf4YU51QvDQf2AlUmab2kMpT5Cns9+0bIEgkVRPHf z0FlNoZ9beAGEbD029ZmuKw9eGKakgD/Jpl5iH0CaniOEnHqQLl9daBMZ96FTKXv A+Fcj3bX+Rj5l7JG63pITF38B9KRL15bR/d195bRwiNe91R7zsXd6JRDIwGOptmF nr0GiP/X5Nfy0yMlU+oI47KoJD6ON5kOCOgA/Z1+aqOiYN2Gti2y2lY0VuBDgmuX DKfxvzzMsNQjujHPabzXHUh85vQffg== =SWfF -----END PGP SIGNATURE----- --uzfpZsZBiGb3GVj9--