Date: Fri, 8 Dec 2017 03:49:53 +0000 (UTC) From: Justin Hibbits <jhibbits@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r326675 - head/sys/powerpc/booke Message-ID: <201712080349.vB83nrdx089326@repo.freebsd.org>
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Author: jhibbits Date: Fri Dec 8 03:49:53 2017 New Revision: 326675 URL: https://svnweb.freebsd.org/changeset/base/326675 Log: Remove PTE VA mappings for tracked pages in 64-bit mode This was done in 32-bit mode, but not duplicated when 64-bit mode was brought in. Without this, stale mappings can be left, leading to odd crashes when the wrong VA is checked in XX_PhysToVirt() (dpaa(4)). Modified: head/sys/powerpc/booke/pmap.c Modified: head/sys/powerpc/booke/pmap.c ============================================================================== --- head/sys/powerpc/booke/pmap.c Fri Dec 8 00:57:13 2017 (r326674) +++ head/sys/powerpc/booke/pmap.c Fri Dec 8 03:49:53 2017 (r326675) @@ -1291,6 +1291,10 @@ pte_remove(mmu_t mmu, pmap_t pmap, vm_offset_t va, u_i /* Remove pv_entry from pv_list. */ pv_remove(pmap, va, m); + } else if (m->md.pv_tracked) { + pv_remove(pmap, va, m); + if (TAILQ_EMPTY(&m->md.pv_list)) + m->md.pv_tracked = false; } mtx_lock_spin(&tlbivax_mutex); tlb_miss_lock();
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