Date: Thu, 1 Dec 2022 19:13:08 -0800 From: Mark Millard <marklmi@yahoo.com> To: ehem+freebsd@m5p.com, freebsd-arch <freebsd-arch@freebsd.org> Subject: Re: Giant Locked drivers Message-ID: <9C63C7CB-0416-4F7F-80DB-28C5002A5F36@yahoo.com> References: <9C63C7CB-0416-4F7F-80DB-28C5002A5F36.ref@yahoo.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Elliott Mitchell <ehem+freebsd_at_m5p.com> wrote on Date: Fri, 02 Dec 2022 00:33:00 UTC : > On Tue, Nov 15, 2022 at 10:37:36AM -0700, Warner Losh wrote: > > When set to 0, you get today's behavior. If set to 1, it will no = longer > > allow drivers that don't request MPSAFE interrupt handlers from = registering > > (the interrupt setup will return an error). > >=20 > > This will allow us to understand what is lost if we throw the = switch, and > > allow users to proactively test their systems to see if they are > > affected or not (and if they are, if they want to live without the > > functionality, or want to fund work in the area). > >=20 > > Comments? >=20 > . . . >=20 >=20 > In other news in two handy VMs. On x86: (a full VM with hardware = emulation) >=20 > atkbd0: [GIANT-LOCKED] > psm0: [GIANT-LOCKED] > WARNING: Device "psm" is Giant locked and may be deleted before = FreeBSD 14.0. >=20 > On ARM64: (basically pure VM with no emulated hardware) >=20 > <nothing> >=20 > So right now everyone is reporting x86 console devices and nothing = else. In = https://lists.freebsd.org/archives/freebsd-arch/2022-November/000290.html I reported that RPi*'s list: WARNING: Device "fb" is Giant locked and may be deleted before FreeBSD = 14.0. The other two types of small board computers that I have access to do not have software support for the video. I've no evidence beyond those tests to know if the issue is specific to the RPi*'s vs. more general. > This suggests the x86 console is urgent for giant removal. Then = perhaps > it will be viable to default to disabled (or perhaps something else = will > float to the top). =3D=3D=3D Mark Millard marklmi at yahoo.com
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?9C63C7CB-0416-4F7F-80DB-28C5002A5F36>