Linux 7.4 Slated To Land The AVX-512 Optimized xor_gen For A Big Performance Win
Linux 7.4 is expected to include an AVX-512 optimized xor_gen function to significantly improve software RAID performance. This enhancement, led by Eric Biggers of Google, targets modern AMD and Intel processors capable of AVX-512 instructions. The patch has been queued for submission during the Linux 7.4 merge window scheduled for late October.
- ▪The AVX-512 optimized xor_gen function is designed to accelerate parity block generation and validation for RAID5 and RAID6.
- ▪Eric Biggers from Google has led the development of this patch, building on his previous work in Linux crypto code optimization.
- ▪The patch is currently queued in the TIP's x86/fpu Git branch for inclusion in the upcoming Linux 7.4 kernel.
- ▪Performance gains from this optimization have been demonstrated on hardware such as the AMD Ryzen 9 9950X.
- ▪The Linux 7.4 merge window is expected to occur in the second half of October 2026.
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| Original publisher | Phoronix |
| Canonical URL | https://www.phoronix.com/news/Linux-7.4-Land-AVX-512-xor-gen |
| Publication time | Tue, 15 Sep 2026 20:53:15 -0400 |
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Linux 7.4 Slated To Land The AVX-512 Optimized xor_gen For A Big Performance Win Written by Michael Larabel in Hardware on 15 September 2026 at 08:53 PM EDT. Add A Comment Over the past few months there have been patches floating around for an AVX-512 optimized xor_gen() for the Linux kernel for that functuon used by the Linux software RAID code. It's been shhowing very nice performance gains with this function being used for generating and validating parity blocks such as for RAID5 and RAID6. The upcoming Linux 7.4 cycle is slated to merge this nice enhancement for benefiting AMD Zen 4 and newer or current Intel server CPUs with AVX-512.
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