Re: [Qemu-devel] [PATCH 3/3] cirrus: mark as deprecated

[Paolo Bonzini]

On 26/10/2018 11:59, Daniel P. Berrangé wrote:
> I should also say that QEMU as an upstream project has multiple goals.
> Running KVM guests with modern PV hardware is only one of them, albeit
> a widely used one. Being able to run old legacy OS with old hardware,
> and running arbitrary embedded boards/devices with emulation are both
> use cases that QEMU project aims to address. To eliminate all the old
> "crufty" device emulation in name of improving security for KVM, would
> be to eliminate core use cases of the project. THis is why we're trying
> to persue the direction of making it easier for vendors to disable
> features and devices they don't wish to support & thus limit their
> downstream CVE exposure.

Indeed.  If we had to deprecate a feature just because it had an
off-by-one bug, no C program would grow beyond 1000 lines of code...

Paolo