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xen-devel
[Xen-devel] [PATCH 4 of 6] When passing no bitmap for the shadow log dir
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To: |
xen-devel@xxxxxxxxxxxxxxxxxxx |
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Subject: |
[Xen-devel] [PATCH 4 of 6] When passing no bitmap for the shadow log dirty bitmap clean up, we should not get EFAULT |
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From: |
Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx> |
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Date: |
Mon, 14 Nov 2011 16:48:45 -0500 |
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Cc: |
olaf@xxxxxxxxx, George.Dunlap@xxxxxxxxxxxxx, andres@xxxxxxxxxxxxxx, tim@xxxxxxx, keir.xen@xxxxxxxxx, adin@xxxxxxxxxxxxxx |
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Mon, 14 Nov 2011 13:54:04 -0800 |
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Mercurial-patchbomb/1.8.4 |
tools/libxc/xc_domain.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
This is due to a stale check for guest_handle_null in the hypervisor, which
doesn't
necessarily work with the hypercall buffers.
Signed-off-by: Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx>
diff -r 43dd4fdbf539 -r f11528df1df3 tools/libxc/xc_domain.c
--- a/tools/libxc/xc_domain.c
+++ b/tools/libxc/xc_domain.c
@@ -430,6 +430,8 @@ int xc_shadow_control(xc_interface *xch,
DECLARE_DOMCTL;
DECLARE_HYPERCALL_BUFFER_ARGUMENT(dirty_bitmap);
+ memset(&domctl, 0, sizeof(domctl));
+
domctl.cmd = XEN_DOMCTL_shadow_op;
domctl.domain = (domid_t)domid;
domctl.u.shadow_op.op = sop;
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