Date: Tue, 31 Mar 2015 00:55:13 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r280873 - stable/10/sys/x86/iommu Message-ID: <201503310055.t2V0tDWH033259@svn.freebsd.org>
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Author: kib Date: Tue Mar 31 00:55:12 2015 New Revision: 280873 URL: https://svnweb.freebsd.org/changeset/base/280873 Log: MFC r280434: Assert that the mapping loop makes progress. Modified: stable/10/sys/x86/iommu/intel_idpgtbl.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/x86/iommu/intel_idpgtbl.c ============================================================================== --- stable/10/sys/x86/iommu/intel_idpgtbl.c Tue Mar 31 00:18:00 2015 (r280872) +++ stable/10/sys/x86/iommu/intel_idpgtbl.c Tue Mar 31 00:55:12 2015 (r280873) @@ -464,6 +464,7 @@ ctx_map_buf_locked(struct dmar_ctx *ctx, KASSERT(size >= pg_sz, ("mapping loop overflow %p %jx %jx %jx", ctx, (uintmax_t)base, (uintmax_t)size, (uintmax_t)pg_sz)); + KASSERT(pg_sz > 0, ("pg_sz 0 lvl %d", lvl)); pte = ctx_pgtbl_map_pte(ctx, base, lvl, flags, &idx, &sf); if (pte == NULL) { KASSERT((flags & DMAR_PGF_WAITOK) == 0,
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