Date: Mon, 12 Feb 2018 17:27:50 +0000 (UTC) From: "Jonathan T. Looney" <jtl@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r329171 - head/sys/amd64/amd64 Message-ID: <201802121727.w1CHRo1I063772@repo.freebsd.org>
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Author: jtl Date: Mon Feb 12 17:27:50 2018 New Revision: 329171 URL: https://svnweb.freebsd.org/changeset/base/329171 Log: Mark the pages used for the initial page-table entries as wired. This makes them consistent with the way other page-table pages are allocated. It also provides the rest of the VM system a good clue that these pages are used. Reviewed by: alc, kib, markj Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D14269 Modified: head/sys/amd64/amd64/pmap.c Modified: head/sys/amd64/amd64/pmap.c ============================================================================== --- head/sys/amd64/amd64/pmap.c Mon Feb 12 16:25:56 2018 (r329170) +++ head/sys/amd64/amd64/pmap.c Mon Feb 12 17:27:50 2018 (r329171) @@ -1244,7 +1244,9 @@ pmap_init(void) ("pmap_init: page table page is out of range")); mpte->pindex = pmap_pde_pindex(KERNBASE) + i; mpte->phys_addr = KPTphys + (i << PAGE_SHIFT); + mpte->wire_count = 1; } + atomic_add_int(&vm_cnt.v_wire_count, nkpt); /* * If the kernel is running on a virtual machine, then it must assume
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