Date: Tue, 15 Oct 2019 14:18:40 +0000 (UTC) From: Mark Johnston <markj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r353553 - stable/12/sys/riscv/riscv Message-ID: <201910151418.x9FEIetB000784@repo.freebsd.org>
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Author: markj Date: Tue Oct 15 14:18:40 2019 New Revision: 353553 URL: https://svnweb.freebsd.org/changeset/base/353553 Log: MFC r353306: Clear PGA_WRITEABLE in riscv's pmap_remove_l3(). Modified: stable/12/sys/riscv/riscv/pmap.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/riscv/riscv/pmap.c ============================================================================== --- stable/12/sys/riscv/riscv/pmap.c Tue Oct 15 14:18:01 2019 (r353552) +++ stable/12/sys/riscv/riscv/pmap.c Tue Oct 15 14:18:40 2019 (r353553) @@ -2090,6 +2090,7 @@ static int pmap_remove_l3(pmap_t pmap, pt_entry_t *l3, vm_offset_t va, pd_entry_t l2e, struct spglist *free, struct rwlock **lockp) { + struct md_page *pvh; pt_entry_t old_l3; vm_paddr_t phys; vm_page_t m; @@ -2109,6 +2110,12 @@ pmap_remove_l3(pmap_t pmap, pt_entry_t *l3, vm_offset_ vm_page_aflag_set(m, PGA_REFERENCED); CHANGE_PV_LIST_LOCK_TO_VM_PAGE(lockp, m); pmap_pvh_free(&m->md, pmap, va); + if (TAILQ_EMPTY(&m->md.pv_list) && + (m->flags & PG_FICTITIOUS) == 0) { + pvh = pa_to_pvh(VM_PAGE_TO_PHYS(m)); + if (TAILQ_EMPTY(&pvh->pv_list)) + vm_page_aflag_clear(m, PGA_WRITEABLE); + } } return (pmap_unuse_pt(pmap, va, l2e, free));
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