Re: [PATCH for-9.0] docs/about: Mark the iaspc machine type as deprecated

["Daniel P. Berrangé" <berrange@redhat.com>]

On Tue, Mar 26, 2024 at 02:29:58PM +0100, Philippe Mathieu-Daudé wrote:
> Hi Igor,
> 
> On 26/3/24 14:08, Thomas Huth wrote:
> > 
> > s/iaspc/isapc/ in the subject
> > 
> > On 26/03/2024 13.51, Igor Mammedov wrote:
> > > ISAPC machine was introduced 25 years ago and it's a lot of time since
> > > such machine was around with real ISA only PC hardware practically
> > > defunct.
> > > Also it's slowly bit-rots (for example: I was able to boot RHEL6 on
> > > RHEL9 host
> > > in only TCG mode, while in KVM mode it hung in the middle of boot)
> 
> I'm quite opposed to this patch. QEMU models various very-old /
> defunct hardware. I'm pretty sure Bernhard and myself are OK to
> keep maintaining it, besides we are working in separating it from
> the i440fx+piix machine. Also, this machine is particularly
> interesting for my single-binary experiments.
> 
> Where I agree is we should stop reporting "KVM on ISA/PC machine"
> as supported.

isapc could arguably be restricted to just 32-bit CPU models, because
we should not need it to support any feature that didn't exist prior
to circa 1995. eg refuse to start with isapc, if 'lm' is present in
the CPU model for example.

With regards,
Daniel
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