Re: [RFC PATCH] arm64/fpsimd: Don't disable softirq when touching FPSIMD/SVE state
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: 2019-02-13 16:52:33
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On 2019-02-13 16:40:00 [+0100], Ard Biesheuvel wrote:
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quoted
This is equal what x86 is currently doing. The naming is slightly different, there is irq_fpu_usable().Yes, I think it's basically the same idea. It's been evolving a bit on both sides, but is quite similar now.may_use_simd() only exists because we have a generic crypto SIMD helper, and so we needed something arch agnostic to wrap around irq_fpu_usable()
My question was more if this is helpful and we want to keep or if it would be better to remove it and always disable BH as part of SIMD operations. Sebastian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel