Re: [PATCH bpf-next v4 0/3] bpf, arm64: use BPF prog pack allocator in BPF JIT

[Puranjay Mohan]

Hi Mark,

On Mon, Jul 3, 2023 at 7:15 PM Mark Rutland <mark.rutland@xxxxxxx> wrote:
>
> On Mon, Jul 03, 2023 at 06:40:21PM +0200, Daniel Borkmann wrote:
> > Hi Mark,
>
> Hi Daniel,
>
> > On 6/26/23 10:58 AM, Puranjay Mohan wrote:
> > > BPF programs currently consume a page each on ARM64. For systems with many BPF
> > > programs, this adds significant pressure to instruction TLB. High iTLB pressure
> > > usually causes slow down for the whole system.
> > >
> > > Song Liu introduced the BPF prog pack allocator[1] to mitigate the above issue.
> > > It packs multiple BPF programs into a single huge page. It is currently only
> > > enabled for the x86_64 BPF JIT.
> > >
> > > This patch series enables the BPF prog pack allocator for the ARM64 BPF JIT.
>
> > If you get a chance to take another look at the v4 changes from Puranjay and
> > in case they look good to you reply with an Ack, that would be great.
>
> Sure -- this is on my queue of things to look at; it might just take me a few
> days to get the time to give this a proper look.
>
> Thanks,
> Mark.

I am eagerly looking forward to your feedback on this series.

Thanks,
Puranjay