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

On Mon, Jan 30, 2023 at 11:47:02AM +0000, Peter Maydell wrote: > On Mon, 30 Jan 2023 at 11:44, Thomas Huth <thuth(a)redhat.com&gt; wrote: > > > > Testing 32-bit host OS support takes a lot of precious time during the QEMU > > contiguous integration tests, and considering that many OS vendors stopped > > shipping 32-bit variants of their OS distributions and most hardware from > > the past >10 years is capable of 64-bit > > True for x86, not necessarily true for other architectures. > Are you proposing to deprecate x86 32-bit, or all 32-bit? > I'm not entirely sure about whether we're yet at a point where > I'd want to deprecate-and-drop 32-bit arm host support. Do we have a feeling on which aspects of 32-bit cause us the support burden ? The boring stuff like compiler errors from mismatched integer sizes is mostly quick & easy to detect simply through a cross compile. I vaguely recall someone mentioned problems with atomic ops in the past, or was it 128-bit ints, caused implications for the codebase ?

With regards, Daniel