08.05.2023 13:28, Michael S. Tsirkin wrote:
On Sun, May 07, 2023 at 08:56:23PM +0300, Michael Tokarev wrote:
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I'm about to revert that old change on debian, to make it just a warning instead of an error (the code is different now, but the same principle applies), - because I dislike dependencies which are useless 99.9% of the time and are trivial to install when actually needed.
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I advise against it. If you boot guest on a system with boot rom not installed you will not be able to migrate to a system with boot rom installed. why not? because we don't know how big to make the rom BAR. And users will not discover until much much later after they have painted themselves into a corner.
Yes, I know about the migration. Actually there's an old bug report open against debian qemu package, - the context is similar to the old bios128 vs bios256 thing in qemu upstream, - boot roms might change in size too. In this context though, the talk is not about migration at all. The missing dep is in Xen HVM qemu package, a xen-only build of qemu-system-i386. And this one fails to start unless the boot roms are provided. It is not even capable of migration to begin with :) Thank you for the reminder, - very useful. /mjt
