Date: Tue, 27 Jan 2026 04:39:47 +0000 From: Adrian Chadd <adrian@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 9a5baa9c5856 - main - powerpc: disable the TLBIE lock, it's not needed for POWER8 Message-ID: <69784193.3d0d9.f5d2fc9@gitrepo.freebsd.org>
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The branch main has been updated by adrian: URL: https://cgit.FreeBSD.org/src/commit/?id=9a5baa9c585652fb7bd4ccd45d567204caf349f2 commit 9a5baa9c585652fb7bd4ccd45d567204caf349f2 Author: Adrian Chadd <adrian@FreeBSD.org> AuthorDate: 2026-01-23 07:36:00 +0000 Commit: Adrian Chadd <adrian@FreeBSD.org> CommitDate: 2026-01-27 04:39:37 +0000 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 --- sys/powerpc/aim/moea64_native.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/sys/powerpc/aim/moea64_native.c b/sys/powerpc/aim/moea64_native.c index bf254e1f466c..20beccbdf935 100644 --- a/sys/powerpc/aim/moea64_native.c +++ b/sys/powerpc/aim/moea64_native.c @@ -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;home | help
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