From 9e2e48ff31cea669cfc9c1476f49b815ea9ac1b1 Mon Sep 17 00:00:00 2001 From: Brett Mastbergen Date: Wed, 2 Oct 2019 10:28:16 -0400 Subject: tools: qemu: Add patches to support adapter_type and monolithicFlat Its way more trouble to update this to a newer version of qemu than it is to backport the two additional features we need. Signed-off-by: Brett Mastbergen --- ...-align-offset-to-cluster-in-get_whole_clu.patch | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 tools/qemu/patches/0003-VMDK-bugfix-align-offset-to-cluster-in-get_whole_clu.patch (limited to 'tools/qemu/patches/0003-VMDK-bugfix-align-offset-to-cluster-in-get_whole_clu.patch') diff --git a/tools/qemu/patches/0003-VMDK-bugfix-align-offset-to-cluster-in-get_whole_clu.patch b/tools/qemu/patches/0003-VMDK-bugfix-align-offset-to-cluster-in-get_whole_clu.patch new file mode 100644 index 0000000000..38e6c0ae8f --- /dev/null +++ b/tools/qemu/patches/0003-VMDK-bugfix-align-offset-to-cluster-in-get_whole_clu.patch @@ -0,0 +1,46 @@ +From 66922efc83a670178b208dec2f5123ec85fb6ba3 Mon Sep 17 00:00:00 2001 +From: Fam Zheng +Date: Tue, 12 Jul 2011 19:56:29 +0800 +Subject: [PATCH 03/12] VMDK: bugfix, align offset to cluster in + get_whole_cluster + +In get_whole_cluster, the offset is not aligned to cluster when reading +from backing_hd. When the first write to child is not at the cluster +boundary, wrong address data from parent is copied to child. + +Signed-off-by: Fam Zheng +Reviewed-by: Stefan Hajnoczi +Signed-off-by: Kevin Wolf +--- + block/vmdk.c | 8 +++++--- + 1 file changed, 5 insertions(+), 3 deletions(-) + +--- a/block/vmdk.c ++++ b/block/vmdk.c +@@ -514,21 +514,23 @@ static int get_whole_cluster(BlockDriver + /* 128 sectors * 512 bytes each = grain size 64KB */ + uint8_t whole_grain[extent->cluster_sectors * 512]; + +- // we will be here if it's first write on non-exist grain(cluster). +- // try to read from parent image, if exist ++ /* we will be here if it's first write on non-exist grain(cluster). ++ * try to read from parent image, if exist */ + if (bs->backing_hd) { + int ret; + + if (!vmdk_is_cid_valid(bs)) + return -1; + ++ /* floor offset to cluster */ ++ offset -= offset % (extent->cluster_sectors * 512); + ret = bdrv_read(bs->backing_hd, offset >> 9, whole_grain, + extent->cluster_sectors); + if (ret < 0) { + return -1; + } + +- //Write grain only into the active image ++ /* Write grain only into the active image */ + ret = bdrv_write(extent->file, cluster_offset, whole_grain, + extent->cluster_sectors); + if (ret < 0) { -- cgit v1.2.3