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

[Catalin Marinas <catalin.marinas@xxxxxxx>]

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).

-- 
Catalin