Re: [PATCH bpf-next v2 5/8] arm32, bpf: add support for 32-bit signed division

[Russell King (Oracle)]

On Wed, Sep 06, 2023 at 06:33:17PM +0000, Puranjay Mohan wrote:
> The cpuv4 added a new BPF_SDIV instruction that does signed division.
> The encoding is similar to BPF_DIV but BPF_SDIV sets offset=1.
> 
> ARM32 already supports 32-bit BPF_DIV which can be easily extended to
> support BPF_SDIV as ARM32 has the SDIV instruction. When the CPU is not
> ARM-v7, we implement that SDIV/SMOD with the function call similar to
> the implementation of DIV/MOD.
> 
> Signed-off-by: Puranjay Mohan <puranjay12@xxxxxxxxx>

Reviewed-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>

Thanks, this is a lot more clear!

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