[Xen-changelog] [xen master] clarify SHUTDOWN_suspend additional argument

[patchbot@xxxxxxx]

commit bfc2e6e9423da679a35f33a9c488060748d94844
Author:     Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
AuthorDate: Thu May 8 16:43:08 2014 +0100
Commit:     Ian Campbell <ian.campbell@xxxxxxxxxx>
CommitDate: Mon May 12 13:04:48 2014 +0100

    clarify SHUTDOWN_suspend additional argument
    
    Clarify the behaviour of SCHEDOP_shutdown: PV x86 guests need to pass a
    third argument, that is unused on HVM and ARM guests.
    
    Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
    Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
 xen/include/public/sched.h |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/xen/include/public/sched.h b/xen/include/public/sched.h
index a30b11d..4000ac9 100644
--- a/xen/include/public/sched.h
+++ b/xen/include/public/sched.h
@@ -76,9 +76,10 @@
  * Halt execution of this domain (all VCPUs) and notify the system controller.
  * @arg == pointer to sched_shutdown_t structure.
  *
- * If the sched_shutdown_t reason is SHUTDOWN_suspend then this
- * hypercall takes an additional extra argument which should be the
- * MFN of the guest's start_info_t.
+ * If the sched_shutdown_t reason is SHUTDOWN_suspend then
+ * x86 PV guests must also set RDX (EDX for 32-bit guests) to the MFN
+ * of the guest's start info page.  RDX/EDX is the third hypercall
+ * argument.
  *
  * In addition, which reason is SHUTDOWN_suspend this hypercall
  * returns 1 if suspend was cancelled or the domain was merely
--
generated by git-patchbot for /home/xen/git/xen.git#master

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