Re: [PATCH v4] target/arm/tcg: refine cache descriptions with a wrapper

[Alireza Sanaee]

On Tue, 3 Sep 2024 15:18:41 +0200
Philippe Mathieu-Daudé <philmd@linaro.org> wrote:

> On 3/9/24 10:35, Alireza Sanaee wrote:
> > This patch allows for easier manipulation of the cache description
> > register, CCSIDR. Which is helpful for testing as well. Currently,
> > numbers get hard-coded and might be prone to errors.
> > 
> > Therefore, this patch adds a wrapper for different types of CPUs
> > available in tcg to decribe caches. One function `make_ccsidr`
> > supports two cases by carrying a parameter as FORMAT that can be
> > LEGACY and CCIDX which determines the specification of the register.
> > 
> > For CCSIDR register, 32 bit version follows specification [1].
> > Conversely, 64 bit version follows specification [2].  
> 
> This is the commit description,
> 
> ---
> 
> this part is not relevant in the git history and can go
> (hopefully the maintainer can do that for you),
> 
> > 
> > Changes from v2 [3] -> v3:
> > 
> > 1) add only one function instead of ccsidr32 and ccsidr64
> > 2) use deposit32 and deposit64 in ccsidr function
> > 
> > Chnages from v3 [4] -> v4:
> > 1) Use only one variable in the make_ccsidr function.
> > 2) Include qemu/host-utils.h to get is_power_of_2() declaration.
> >   
> ---
> 
> keeping these references,
> 
> > [1] B4.1.19, ARM Architecture Reference Manual ARMv7-A and ARMv7-R
> > edition, https://developer.arm.com/documentation/ddi0406
> > [2] D23.2.29, ARM Architecture Reference Manual for A-profile
> > Architecture, https://developer.arm.com/documentation/ddi0487/latest/  
> 
> ---
> 
> and dropping these ones.
> 
> > [3] 
> > https://lore.kernel.org/qemu-devel/20240830184713.224-1-alireza.sanaee@huawei.com/
> > [4] 
> > 20240902203211.270-1-alireza.sanaee@huawei.com/">https://lore.kernel.org/qemu-devel/20240902203211.270-1-alireza.sanaee@huawei.com/
> > 
> > Signed-off-by: Alireza Sanaee <alireza.sanaee@huawei.com>
> > ---
> >   target/arm/cpu-features.h |  50 ++++++++++++++++++
> >   target/arm/cpu64.c        |  19 ++++---
> >   target/arm/tcg/cpu64.c    | 108
> > +++++++++++++++++++------------------- 3 files changed, 117
> > insertions(+), 60 deletions(-)  
> 
> Thanks for the iterations.
> 
> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> 

Thanks for the feedback.

v5 sent. hopefully that's OK.