On Fri, Jan 10, 2025 at 01:58:48PM +0000, Alexandru Elisei wrote: > Newer architecture features are supported by qemu TCG on newer CPUs. When > writing a test for such architecture features, it is necessary to pass the > correct -cpu argument to qemu. Make it easier on users and test authors > alike by making 'max' the default value for --processor. The 'max' CPU > model contains all the features of the cortex-a57 CPU (the old default), so > no regression should be possible. > > A side effect is that, by default, the compiler will not receive a -mcpu > argument for compiling the code. The expectation is that this is fine, > since support for -mcpu=$PROCESSOR has only been added for arm64 in the > last commit. > > The default for arm (cortex-a15) has been kept unchanged, because passing > --processor=max will cause compilation to break. If the user wants the qemu > CPU model to be 'max', the user will also have to supply a suitable compile > CPU target via --cflags=-mcpu=<cpu> configure option. > > Signed-off-by: Alexandru Elisei <alexandru.elisei@xxxxxxx> > --- > configure | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/configure b/configure > index 46964d36a7d8..3ab0ec208e10 100755 > --- a/configure > +++ b/configure > @@ -14,7 +14,7 @@ function get_default_processor() > default_processor="cortex-a15" > ;; > "arm64" | "aarch64") > - default_processor="cortex-a57" > + default_processor="max" > ;; > *) > default_processor=$arch > -- > 2.47.1 > Another reason to introduce a new parameter (qemu_cpu) is that we can also change arm32 to 'max', reducing divergence between arm32 and arm64. Thanks, drew
