Date: Tue, 17 Feb 2015 05:36:17 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r278882 - user/nwhitehorn/ppc64-pmap-rework/pseries Message-ID: <201502170536.t1H5aHm4091191@svn.freebsd.org>
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Author: nwhitehorn Date: Tue Feb 17 05:36:16 2015 New Revision: 278882 URL: https://svnweb.freebsd.org/changeset/base/278882 Log: Enable use of H_PROTECT. This branch currently uses half the system time (and 65% the wall time) of HEAD to complete a make -j32 buildworld. Modified: user/nwhitehorn/ppc64-pmap-rework/pseries/mmu_phyp.c Modified: user/nwhitehorn/ppc64-pmap-rework/pseries/mmu_phyp.c ============================================================================== --- user/nwhitehorn/ppc64-pmap-rework/pseries/mmu_phyp.c Tue Feb 17 05:10:41 2015 (r278881) +++ user/nwhitehorn/ppc64-pmap-rework/pseries/mmu_phyp.c Tue Feb 17 05:36:16 2015 (r278882) @@ -289,27 +289,27 @@ mphyp_pte_unset(mmu_t mmu, struct pvo_en static void mphyp_pte_replace(mmu_t mmu, struct pvo_entry *pvo, int flags) { - struct lpte evicted; + struct lpte pte; int64_t result; PMAP_LOCK_ASSERT(pvo->pvo_pmap, MA_OWNED); - if (0 && flags == MOEA64_PTE_PROT_UPDATE) { - moea64_pte_from_pvo(pvo, &evicted); + if (flags == MOEA64_PTE_PROT_UPDATE) { + moea64_pte_from_pvo(pvo, &pte); result = phyp_hcall(H_PROTECT, - H_AVPN | (pvo->pvo_pte.pa & LPTE_PP), pvo->pvo_pte.slot, - evicted.pte_hi & LPTE_AVPN_MASK); + H_AVPN | (pte.pte_lo & (LPTE_PP | LPTE_NOEXEC)), + pvo->pvo_pte.slot, pte.pte_hi & LPTE_AVPN_MASK); if (result == H_NOT_FOUND) return; KASSERT(result == H_SUCCESS || result == H_NOT_FOUND, ("Error changing page protection: %d", (int)result)); - /* Mark RC changes */ - result = mphyp_pte_clear(mmu, pvo, LPTE_REF | LPTE_CHG); + /* Mark C changes (R zeroed by H_PROTECT) */ + result = mphyp_pte_clear(mmu, pvo, LPTE_CHG); if (result > 0) moea64_sync_refchg(pvo->pvo_pte.pa | - (result & (LPTE_REF | LPTE_CHG))); + (result & LPTE_CHG)); return; }
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