Re: [PATCH] system/rtc: Fix a possible year-2038 integer overflow problem

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