From: "Boyer, Andrew" <Andrew.Boyer@amd.com>
To: "ruifeng.wang@arm.com" <ruifeng.wang@arm.com>,
Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
"Yigit, Ferruh" <Ferruh.Yigit@amd.com>,
Srikanth Yalavarthi <syalavarthi@marvell.com>
Subject: Adding helper function for ARM "dsb st"
Date: Mon, 5 Feb 2024 14:11:57 +0000 [thread overview]
Message-ID: <73E1496A-FA0A-46FB-8E72-FD24B56BEBFD@amd.com> (raw)
I see that cnxk has added inline assembly for the ARM "dsb st" barrier. We, too, would like to add a use of this instruction. Can a helper function be added to the atomics headers?
> drivers/ml/cnxk/cn10k_ml_dev.h:#define dsb_st ({ asm volatile("dsb st" : : : "memory"); })
What would the helper be named, rte_wsb()? I suppose it would be a NOP on all other platforms.
Maybe we could add something for "dmb st" at the same time and get rid of that assembly, too.
Thanks,
Andrew
next reply other threads:[~2024-02-05 14:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-05 14:11 Boyer, Andrew [this message]
2024-02-07 3:50 ` Honnappa Nagarahalli
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