On 19/05/2026 12.21, Peter Maydell wrote:
On Tue, 19 May 2026 at 10:27, Thomas Huth <[email protected]> wrote:
On 19/05/2026 11.18, Thomas Huth wrote:
On 19/05/2026 10.24, Philippe Mathieu-Daudé wrote:
"32-bit *host* OS".
Per ./configure script, we still allow:
- x86_64 x32 ABI (CPU_CFLAGS="-mx32")
We should maybe deprecate that x32 ABI ...
- sparc32 (CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc")
... and that one as well?
- s390 (CPU_CFLAGS="-m31")
Uh, we really still allow 31-bit s390 hosts here? I think this could be
removed nowadays, also upstream kernel recently ditched the 31-bit userspace:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
commit/?id=8e0b986c59c67e08ada646249f834655a9e6da16
Question is whether we can remove it immediately, or whether it needs to be
deprecated first?
Ah, wait, we completely disallow disallow 32-bit hosts nowadays:
https://gitlab.com/qemu-project/qemu/-/commit/372ec46b9f1215f48a4717f2b7ed969f65bfadc6
We relaxed that check before the 11.0 release in commit cf634dfcd8fc.
We require a 64-bit host for the emulator binaries but still permit
32-bit host builds for the tools.
Ah, thanks, that was the part that I missed!
Thomas
