netdev - Re: [PATCH bpf-next v2 0/3] xdpsock: allow mmap2 usage for 32bits

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Date:   Wed, 21 Aug 2019 14:35:19 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Ivan Khoronzhuk <ivan.khoronzhuk@...aro.org>,
        magnus.karlsson@...el.com, bjorn.topel@...el.com
Cc:     davem@...emloft.net, hawk@...nel.org, john.fastabend@...il.com,
        jakub.kicinski@...ronome.com, netdev@...r.kernel.org,
        bpf@...r.kernel.org, xdp-newbies@...r.kernel.org,
        linux-kernel@...r.kernel.org, jlemon@...gsvamp.com, yhs@...com,
        andrii.nakryiko@...il.com
Subject: Re: [PATCH bpf-next v2 0/3] xdpsock: allow mmap2 usage for 32bits

On 8/15/19 2:13 PM, Ivan Khoronzhuk wrote:
> This patchset contains several improvements for af_xdp socket umem
> mappings for 32bit systems. Also, there is one more patch outside of
> this series that on linux-next tree and related to mmap2 af_xdp umem
> offsets: "mm: mmap: increase sockets maximum memory size pgoff for 32bits"
> https://lkml.org/lkml/2019/8/12/549
> 
> Based on bpf-next/master
> 
> Prev: https://lkml.org/lkml/2019/8/13/437
> 
> v2..v1:
> 	- replaced "libbpf: add asm/unistd.h to xsk to get __NR_mmap2" on
> 	 "libbpf: use LFS (_FILE_OFFSET_BITS) instead of direct mmap2
> 	 syscall"
> 	- use vmap along with page_address to avoid overkill
> 	- define mmap syscall trace5 for mmap if defined
> 
> Ivan Khoronzhuk (3):
>    libbpf: use LFS (_FILE_OFFSET_BITS) instead of direct mmap2 syscall
>    xdp: xdp_umem: replace kmap on vmap for umem map
>    samples: bpf: syscal_nrs: use mmap2 if defined
> 
>   net/xdp/xdp_umem.c         | 36 +++++++++++++++++++++++-----
>   samples/bpf/syscall_nrs.c  |  6 +++++
>   samples/bpf/tracex5_kern.c | 13 ++++++++++
>   tools/lib/bpf/Makefile     |  1 +
>   tools/lib/bpf/xsk.c        | 49 +++++++++++---------------------------
>   5 files changed, 64 insertions(+), 41 deletions(-)
> 

Applied, and fixed up typo in last one's subject, thanks!