On Tue, 17 Apr 2012, Gerd Hoffmann wrote:
On 04/17/12 13:40, malc wrote:
On Tue, 17 Apr 2012, Gerd Hoffmann wrote:
Hi,
This patch series switches the vgabios binaries shipped by qemu from the
lgpl'ed vgabios to the seabios version.
There should be no guest-visible changes (especially no regressions) in
theory. The only known (and intentional) exception is the vesa 2.0
protected mode interface which is not implemented by the seavgabios.
What's the reason for it not being done?
In summary: Nontrivial effort for questionable gains.
It worked before, and it should continue to do so. Seabios not having a PM
interface is a regression.
First, the lgpl'ed vgabios provides the vesa pmi for the bochs interface
(-vga std) only, for the cirrus it is not available.
Well aware, Revision 1.48 has some comments.
=> It can't be a critical feature if our default vga is not supported.
Opinions are irrelevant, the feature was available before it should
continue to be available.
Second, the display panning via vesa pmi was broken in qemu for three
years(!) and nobody noticed. The linux kernel's vesafb can use the vesa
pmi, it is disabled by default though due to bioses tending to be buggy.
I'm not aware of other users.
=> Is this actually used by anyone? Seems not ...
It's used by me, when i feel nostalgic and want to watch old DOS stuff.