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Re: Compatibility between -device sga and -machine graphics=off
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From: |
Richard W.M. Jones |
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Subject: |
Re: Compatibility between -device sga and -machine graphics=off |
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Date: |
Wed, 8 Sep 2021 17:33:52 +0100 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
Just commenting from the libguestfs POV:
We don't care about migration, and:
On Wed, Sep 08, 2021 at 05:08:08PM +0100, Daniel P. Berrangé wrote:
> On non-x86 emulators I see graphics=off has semantic effects beyond
> just controlling whether the firmware prints to the serial or not
> though. IOW it is overloaded to do multiple jobs, while -device sga
> only did one specific job. This makes graphics=off somewhat undesirable
> to use. We're possibly lucky in this specific case though, because
> the 'sgabios.bin' ROM is x86 asm code, so was never valid to use in
> the non-x86 case.
we only enable <bios useserial=yes/> on i686 & x86-64.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines. Supports shell scripting,
bindings from many languages. http://libguestfs.org