svn commit: r335629 - in head: share/man/man4 sys/dev/vt/hw/vga
Roger Pau Monné
royger at freebsd.org
Tue Jun 26 07:11:01 UTC 2018
On Tue, Jun 26, 2018 at 05:21:27AM +0000, Alexey Dokuchaev wrote:
> On Mon, Jun 25, 2018 at 08:43:51AM -0700, Rodney W. Grimes wrote:
> > > New Revision: 335629
> > > URL: https://svnweb.freebsd.org/changeset/base/335629
> > >
> > > Log:
> > > vt: add option to ignore NO_VGA flag in ACPI
> > >
> > > To workaround buggy firmware that sets this flag when there's actually
> > > a VGA present.
> > >
> > > Reported and tested by: Yasuhiro KIMURA <yasu at utahime.org>
> > > Sponsored by: Citrix Systems R&D
> > > Reviewed by: kib
> > > Differential revision: https://reviews.freebsd.org/D16003
> >
> > It is generally best to avoid double negatives,
> > couldnt this of been better named? (hw.vga.acpi_force_vga)
>
> Yes please; I get constantly confused when calculating negatives and
> often get them wrong.
This is specifically done to workaround a firmware bug where some
buggy firmwares set the NO_VGA flag in ACPI. So the option does
exactly what the name says, it ignores the NO_VGA flag in ACPI. IMO
acpi_force_vga is not as descriptive as the current name.
Roger.
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