Re: [PATCH-for-9.0] hw/i386/pc: Deprecate 64-bit CPUs on ISA-only PC machine

Per Daniel suggestion [*]: > isapc could arguably be restricted to just 32-bit CPU models, > because we should not need it to support any feature that didn't > exist prior to circa 1995. eg refuse to start with isapc, if 'lm' > is present in the CPU model for example. [*] https://lore.kernel.org/qemu-devel/ZgQkS4RPmSt5Xa08@redhat.com/ Suggested-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; Signed-off-by: Philippe Mathieu-Daudé <philmd(a)linaro.org&gt; --- docs/about/deprecated.rst | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 7b548519b5..345c35507f 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -208,6 +208,13 @@ is no longer packaged in any distro making it harder to run the ``check-tcg`` tests. Unless we can improve the testing situation there is a chance the code will bitrot without anyone noticing. +64-bit (x86_64) CPUs on the ``isapc`` machine (since 9.0) +''''''''''''''''''''''''''''''''''''''''''''''''''''''''' + +The ``isapc`` machine aims to emulate old PC machine without PCI was +generalized, so hardware available around 1995, before 64-bit intel +CPUs were produced. + System emulator machines ------------------------