Re: [PATCH v6 06/11] target/arm: Factor out code for setting MTE TCF0 field

[Richard Henderson <richard.henderson@linaro.org>]

On 6/28/24 08:49, Gustavo Romero wrote:
> I thought you meant osdep.h should not be included _at all_ in my case, either
> in mte_user_helper.h or in mte_user_helper.c. Maybe the wording in the docs
> should be "Do not include "qemu/osdep.h" from header files. Include it from .c
> files, when necessary.".

Not "when necessary", always, and always first.

See the "Include directives" section of docs/devel/style.rst, which does explicitly say 
'Do not include "qemu/osdep.h" from header files'.


> I think we agree osdep.h is necessary and must be put in mte_user_helper.c. But
> that left me wondering how it would work for sources including mte_user_helper.h,
> because it can be the case they don't have the declarations for the types used in
> the function prototypes, in this case, for CPUArchState and abi_long types in
> arm_set_mte_tcf0.

CPUArchState will come from qemu/typedefs.h via osdep.h.

For this particular function, 'int' would have been enough,
since we only care about the low two bits.


r~