[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] Support for Memory paging in grant table mappings.
# HG changeset patch # User Keir Fraser <keir.fraser@xxxxxxxxxx> # Date 1261031275 0 # Node ID 3b29ed4ffb15372ce6fea41dec1b796e2f6fec81 # Parent 410eb65969cb142b8b32490d7f1454859cc3a7f2 Support for Memory paging in grant table mappings. Signed-off-by: Patrick Colp <Patrick.Colp@xxxxxxxxxx> --- xen/common/grant_table.c | 20 ++++++++++++++++++-- 1 files changed, 18 insertions(+), 2 deletions(-) diff -r 410eb65969cb -r 3b29ed4ffb15 xen/common/grant_table.c --- a/xen/common/grant_table.c Thu Dec 17 06:27:55 2009 +0000 +++ b/xen/common/grant_table.c Thu Dec 17 06:27:55 2009 +0000 @@ -1873,7 +1873,15 @@ __gnttab_copy( } else { - s_frame = gmfn_to_mfn(sd, op->source.u.gmfn); + p2m_type_t p2mt; + s_frame = mfn_x(gfn_to_mfn(sd, op->source.u.gmfn, &p2mt)); + if ( p2m_is_paging(p2mt) ) + { + p2m_mem_paging_populate(sd, op->source.u.gmfn); + + rc = -ENOENT; + goto error_out; + } source_domain = sd; } if ( unlikely(!mfn_valid(s_frame)) ) @@ -1906,7 +1914,15 @@ __gnttab_copy( } else { - d_frame = gmfn_to_mfn(dd, op->dest.u.gmfn); + p2m_type_t p2mt; + d_frame = mfn_x(gfn_to_mfn(dd, op->dest.u.gmfn, &p2mt)); + if ( p2m_is_paging(p2mt) ) + { + p2m_mem_paging_populate(dd, op->dest.u.gmfn); + + rc = -ENOENT; + goto error_out; + } dest_domain = dd; } if ( unlikely(!mfn_valid(d_frame)) ) _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-changelog
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