powerpc: disable the TLBIE lock, it's not needed for POWER8

According to POWER8_UM_v1.3_16MAR2016 3.8.3 Translation Lookaside
Buffer (TLB), POWER8 supports lockless TLBIE operations.

Locally Tested:

* IBM POWER8 Revision 2.0, dual socket, 160 threads

Differential Revision:	https://reviews.freebsd.org/D54855
Approved by:	jhibbits

This commit is contained in:

Adrian Chadd

2026-01-23 07:36:00 +00:00

parent 422c8719ea

commit 9a5baa9c58

1 changed files with 5 additions and 0 deletions

									
										sys/powerpc/aim/moea64_native.c
									
		+5
		
												View File
												
				@@ -565,6 +565,11 @@ moea64_bootstrap_native(vm_offset_t kernelstart, vm_offset_t kernelend)

					moea64_early_bootstrap(kernelstart, kernelend);

					switch (mfpvr() >> 16) {

					case IBMPOWER8:

					case IBMPOWER8E:

					case IBMPOWER8NVL:

						moea64_need_lock = false;

						break;

					case IBMPOWER9:

						moea64_need_lock = false;

						break;