Re: [RFC PATCH] docs/about/deprecated: Deprecate 32-bit host systems

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On 1/30/23 02:01, Daniel P. Berrangé wrote:
I vaguely recall someone mentioned problems with atomic ops in the past,
or was it 128-bit ints, caused implications for the codebase ?

TCG_OVERSIZED_GUEST, where 32-bit host running 64-bit guest cannot run the guest except in round-robin mode. It's not *that* much of a support burden, since we're not going to eliminate round-robin mode.

But I do question whether we need to support 64-bit guests on 32-bit hosts at all.
Retaining 32-bit on 32-bit allows arm32 to emulate i686, which I suspect, but have no proof, is the limit of what users actually want.


r~




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