Date: Thu, 18 Feb 2010 02:37:24 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r204026 - projects/ppc64/sys/powerpc/aim Message-ID: <201002180237.o1I2bOVp030267@svn.freebsd.org>
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Author: nwhitehorn Date: Thu Feb 18 02:37:23 2010 New Revision: 204026 URL: http://svn.freebsd.org/changeset/base/204026 Log: Fix a data corruption bug during swap. This bug also exists on 32-bit OEA, and should be applied there after some soaking and correctness checks. Discussed with: grehan Modified: projects/ppc64/sys/powerpc/aim/mmu_oea64.c Modified: projects/ppc64/sys/powerpc/aim/mmu_oea64.c ============================================================================== --- projects/ppc64/sys/powerpc/aim/mmu_oea64.c Thu Feb 18 02:06:57 2010 (r204025) +++ projects/ppc64/sys/powerpc/aim/mmu_oea64.c Thu Feb 18 02:37:23 2010 (r204026) @@ -2054,6 +2054,10 @@ moea64_remove_all(mmu_t mmu, vm_page_t m moea64_pvo_remove(pvo, -1); PMAP_UNLOCK(pmap); } + if ((m->flags & PG_WRITEABLE) && moea64_is_modified(mmu, m)) { + moea64_attr_clear(m, LPTE_CHG); + vm_page_dirty(m); + } vm_page_flag_clear(m, PG_WRITEABLE); } @@ -2472,10 +2476,8 @@ moea64_query_bit(vm_page_t m, u_int64_t struct pvo_entry *pvo; struct lpte *pt; -#if 0 if (moea64_attr_fetch(m) & ptebit) return (TRUE); -#endif LIST_FOREACH(pvo, vm_page_to_pvoh(m), pvo_vlink) { MOEA_PVO_CHECK(pvo); /* sanity check */
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