Date: Fri, 28 Jul 2023 20:17:51 GMT From: Alan Cox <alc@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 3d7c37425ee0 - main - amd64 pmap: Catch up with pctrie changes Message-ID: <202307282017.36SKHpgY074227@gitrepo.freebsd.org>
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The branch main has been updated by alc: URL: https://cgit.FreeBSD.org/src/commit/?id=3d7c37425ee07186c65d424306c1b295c30fa592 commit 3d7c37425ee07186c65d424306c1b295c30fa592 Author: Alan Cox <alc@FreeBSD.org> AuthorDate: 2023-07-28 20:13:13 +0000 Commit: Alan Cox <alc@FreeBSD.org> CommitDate: 2023-07-28 20:13:13 +0000 amd64 pmap: Catch up with pctrie changes Recent changes to the pctrie code make it necessary to initialize the kernel pmap's rangeset for PKU. --- sys/amd64/amd64/pmap.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index a4b8c6dc4c06..c1968fc11844 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -1995,6 +1995,10 @@ pmap_bootstrap(vm_paddr_t *firstaddr) kernel_pmap->pm_stats.resident_count = res; vm_radix_init(&kernel_pmap->pm_root); kernel_pmap->pm_flags = pmap_flags; + if ((cpu_stdext_feature2 & CPUID_STDEXT2_PKU) != 0) { + rangeset_init(&kernel_pmap->pm_pkru, pkru_dup_range, + pkru_free_range, kernel_pmap, M_NOWAIT); + } /* * The kernel pmap is always active on all CPUs. Once CPUs are
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