Author: dougm Date: Sat Feb 1 21:47:34 2020 New Revision: 357389 URL: https://svnweb.freebsd.org/changeset/base/357389
Log: In dmar_gas_lowermatch, skip searching a subtree if all its addresses are greater than lowaddr. In dmar_gas_uppermatch, skip searching a subtree if all its gaps-between-alloctions are too small. Reviewed by: kib Tested by: pho Differential Revision: https://reviews.freebsd.org/D23391 Modified: head/sys/x86/iommu/intel_gas.c Modified: head/sys/x86/iommu/intel_gas.c ============================================================================== --- head/sys/x86/iommu/intel_gas.c Sat Feb 1 21:43:45 2020 (r357388) +++ head/sys/x86/iommu/intel_gas.c Sat Feb 1 21:47:34 2020 (r357389) @@ -370,6 +370,8 @@ dmar_gas_lowermatch(struct dmar_gas_match_args *a, str } if (entry->free_down < a->size + a->offset + DMAR_PAGE_SIZE) return (ENOMEM); + if (entry->first >= a->common->lowaddr) + return (ENOMEM); child = RB_LEFT(entry, rb_entry); if (child != NULL && 0 == dmar_gas_lowermatch(a, child)) return (0); @@ -390,6 +392,8 @@ dmar_gas_uppermatch(struct dmar_gas_match_args *a, str { struct dmar_map_entry *child; + if (entry->free_down < a->size + a->offset + DMAR_PAGE_SIZE) + return (ENOMEM); if (entry->last < a->common->highaddr) return (ENOMEM); child = RB_LEFT(entry, rb_entry); _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
