Date: Wed, 20 Jul 2022 10:08:20 -0700 From: Mark Millard <marklmi@yahoo.com> To: Warner Losh <imp@bsdimp.com>, Glen Barber <gjb@freebsd.org> Cc: Ed Maste <emaste@freebsd.org>, "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net>, dev-commits-src-main@freebsd.org, "Dr. Rolf Jansen" <freebsd-rj@cyclaero.com>, freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: git: 1dfcff294e44 - main - release: increase IMAGE_SIZE for arm, arm64, riscv [odd alignment for SBC images] Message-ID: <D630043D-6EAC-4216-A046-910DB64F8B4A@yahoo.com> In-Reply-To: <CANCZdfoABLggPQgDeCZ5FzYCf8243kvr-p8Bj5_JGNnEszGHBw@mail.gmail.com> References: <16906DFD-286B-4D59-9438-CA9CD9026C55@yahoo.com> <202207171708.26HH81bA062303@gndrsh.dnsmgr.net> <CAPyFy2D1aBe8h4kq=RqCR2tkEiEXh_pHNEqaAnW7tk9-HxCmBQ@mail.gmail.com> <20220719204245.GL30607@FreeBSD.org> <CANCZdfoABLggPQgDeCZ5FzYCf8243kvr-p8Bj5_JGNnEszGHBw@mail.gmail.com>
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On 2022-Jul-19, at 15:45, Warner Losh <imp@bsdimp.com> wrote: > On Tue, Jul 19, 2022, 2:42 PM Glen Barber <gjb@freebsd.org> wrote: >>> . . . >>=20 >> My concern with this is kern.geom.part.mbr.enforce_chs is always '1' = on >> the builders, which effectively means all arm builds will fail every >> time. I think we need to get to the actual root of the problem here, >> versus applying band-aids to a shark bite. >=20 > I think this is the actual problem. While such pedantry can be useful = for ancient picky BIOSes, these days only the LBA fields of the MBR are = used. And the fake BIOS geometry is crazy weird. We can likely tweak it = to be more friendly.=20 >=20 > Why is it =3D=3D 1 on the builder? If people want things aligned gpart = has an option for years iirc to do that. And we want that off for the = builds. Would it seem appropriate to use a week (this week?) to do all the snapshot builds with the builders all set to have kern.geom.part.mbr.enforce_chs=3D0 and see what breaks, if anything? (Sort of a snapshot exp run.) More than just the SBC images might be involved for kern.geom.part.mbr.enforce_ch consequences, for all I know. > Warner >=20 > P.s. the last BIOS that I had to deal with where this mattered was a = 133MHz pentium PC104 board in 2002 or 2003. =3D=3D=3D Mark Millard marklmi at yahoo.com
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