Arm Working On "TLBID" For Linux To Increase Performance On High Core Count CPUs
Arm Working On "TLBID" For Linux To Increase Performance On High Core Count CPUs Written by Michael Larabel in Arm on 3 October 2026 at 08:10 PM EDT. Add A Comment Arm sent out an initial set of patches this week working on support in the Linux kernel for TLBI Domains. This "TLBID" feature is an upcoming Arm architecture capability designed to increase performance on high core count systems.
- ▪Arm Working On "TLBID" For Linux To Increase Performance On High Core Count CPUs Written by Michael Larabel in Arm on 3 October 2026 at 08:10 PM EDT.
- ▪Add A Comment Arm sent out an initial set of patches this week working on support in the Linux kernel for TLBI Domains.
- ▪This "TLBID" feature is an upcoming Arm architecture capability designed to increase performance on high core count systems.
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| Original publisher | Phoronix |
| Canonical URL | https://www.phoronix.com/news/ARM64-Linux-TLBI-Domains |
| Publication time | Sat, 03 Oct 2026 20:10:09 -0400 |
| Retrieval time | 2026-10-04T00:13:16.534Z |
| Last seen | 2026-10-04T00:13:52.151Z |
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Arm Working On "TLBID" For Linux To Increase Performance On High Core Count CPUs Written by Michael Larabel in Arm on 3 October 2026 at 08:10 PM EDT. Add A Comment Arm sent out an initial set of patches this week working on support in the Linux kernel for TLBI Domains. This "TLBID" feature is an upcoming Arm architecture capability designed to increase performance on high core count systems. With TLBID there is the ability to perform Translation Lookaside Buffer (TLB) invalidation on just a subset of the CPU cores rather than always performing TLB invalidation system-wide. They are working on plumbing the Linux kernel support so TLBI commands are sent only to the CPUs where a given process was running to avoid the overhead of clearing the TLB for the entire system.
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