Re: [PATCH v2] xen/arm: Avoid overflow using MIDR_IMPLEMENTOR_MASK

[Michal Orzel <michal.orzel@xxxxxxx>]

Hi Catalin,

On 05.05.2022 14:13, Catalin Marinas wrote:
> On Thu, May 05, 2022 at 01:59:06PM +0200, Michal Orzel wrote:
>> Value of macro MIDR_IMPLEMENTOR_MASK exceeds the range of integer
>> and can lead to overflow. Currently there is no issue as it is used
>> in an expression implicitly casted to u32 in MIDR_IS_CPU_MODEL_RANGE.
>> To avoid possible problems, fix the macro.
>>
>> Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx>
>> Link: https://lore.kernel.org/r/20220426070603.56031-1-michal.orzel@xxxxxxx
>> Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
>> Origin: git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 
>> (48e6f22e25a4)
>> ---
>> Changes since v1:
>> - add Origin tag as the patch was merged in upstream arm64 linux tree
> 
> Note that there's always a risk that the commit Id will be changed
> before it hits mainline (Linus' tree).
> 

This commit is now in linux-next:
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=48e6f22e25a44e43952db5fbb767dea0c9319cb2
so we can be sure that the SHA will stay unmodified there (and will be the same 
in Linus' tree).

Question to maintainers:
Do you want me to update Origin to point to linux-next?

Cheers,
Michal