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From: Yonghong Song <yonghong.song@linux.dev>
To: "Shubham Bansal" <illusionist.neo@gmail.com>,
	"Johan Almbladh" <johan.almbladh@anyfinetworks.com>,
	"Paul Burton" <paulburton@kernel.org>,
	"Jakub Kicinski" <kuba@kernel.org>,
	"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>,
	"Michael Ellerman" <mpe@ellerman.id.au>,
	"Luke Nelson" <luke.r.nels@gmail.com>,
	"Xi Wang" <xi.wang@gmail.com>, "Björn Töpel" <bjorn@kernel.org>,
	"Ilya Leoshkevich" <iii@linux.ibm.com>,
	"Heiko Carstens" <hca@linux.ibm.com>,
	"Vasily Gorbik" <gor@linux.ibm.com>,
	"David S. Miller" <davem@davemloft.net>,
	"Wang YanQing" <udknight@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii@kernel.org>,
	Martin KaFai Lau <martin.lau@kernel.org>,
	bpf <bpf@vger.kernel.org>
Subject: bpf: Request to add -mcpu=v4 support for ARM/MIPS/NFP/POWERPC/RISCV/S390/SPARC/X86_32
Date: Sat, 19 Aug 2023 18:41:30 -0700	[thread overview]
Message-ID: <79d3c797-17ba-bc9e-b1f9-44ad024b576f@linux.dev> (raw)

Hi,

A new set of bpf insns have been recently added in llvm with flag
[-mcpu=v4](https://reviews.llvm.org/D144829). In the kernel,
x86_64 and arm64 have implemented -mcpu=v4 support:
   x86_64: 
https://lore.kernel.org/all/20230728011143.3710005-1-yonghong.song@linux.dev/
   arm64: 
https://lore.kernel.org/bpf/20230815154158.717901-1-xukuohai@huaweicloud.com/

The following arch's do not have -mcpu=v4 support yet:
   arm, mips, nfp, powerpc, riscv, sc90, sparc and x86_32

If you have a chance, could you take a look at what
x86_64/arm64 does and add support to the above arch'es?

Thanks!

Yonghong

             reply	other threads:[~2023-08-20  2:43 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-20  1:41 Yonghong Song [this message]
2023-08-21  2:23 ` bpf: Request to add -mcpu=v4 support for ARM/MIPS/NFP/POWERPC/RISCV/S390/SPARC/X86_32 Pu Lehui
2023-08-21  4:36   ` Yonghong Song
2023-08-21 19:47 ` Jakub Kicinski
2023-08-22 10:06   ` Louis Peens

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