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| author | Ian Campbell <ian.campbell@citrix.com> | 2010-11-10 14:56:06 +0000 |
|---|---|---|
| committer | Ian Campbell <ian.campbell@citrix.com> | 2010-11-10 14:56:06 +0000 |
| commit | d549bdb2a0bbd012263d0795f435fdd0bdae0da6 (patch) | |
| tree | 4adbcb6b3fa23452170157f181b98085ba1687c9 /tools/libxc/xc_misc.c | |
| parent | adee1dd91882b8a13345479c7fe216bac6908451 (diff) | |
| download | xen-d549bdb2a0bbd012263d0795f435fdd0bdae0da6.tar.gz xen-d549bdb2a0bbd012263d0795f435fdd0bdae0da6.tar.bz2 xen-d549bdb2a0bbd012263d0795f435fdd0bdae0da6.zip | |
libxc: correct dirty_bitmap bounce size in xc_hvm_track_dirty_vram
The size should be in bytes not 32-bit words. Fixes graphics
corruption issues for HVM guests due to bouncing too little data.
Also the dirty_bitmap buffer is output only and therefore only needs
bouncing in one direction.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Diffstat (limited to 'tools/libxc/xc_misc.c')
| -rw-r--r-- | tools/libxc/xc_misc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/libxc/xc_misc.c b/tools/libxc/xc_misc.c index f3ffb225bd..0a207cde34 100644 --- a/tools/libxc/xc_misc.c +++ b/tools/libxc/xc_misc.c @@ -423,7 +423,7 @@ int xc_hvm_track_dirty_vram( unsigned long *dirty_bitmap) { DECLARE_HYPERCALL; - DECLARE_HYPERCALL_BOUNCE(dirty_bitmap, (nr+31) / 32, XC_HYPERCALL_BUFFER_BOUNCE_BOTH); + DECLARE_HYPERCALL_BOUNCE(dirty_bitmap, (nr+7) / 8, XC_HYPERCALL_BUFFER_BOUNCE_OUT); DECLARE_HYPERCALL_BUFFER(struct xen_hvm_track_dirty_vram, arg); int rc; |