From: David Vrabel <david.vrabel@citrix.com>
To: xen-devel@lists.xenproject.org
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
David Vrabel <david.vrabel@citrix.com>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Ian Campbell <ian.campbell@citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: [PATCH 2/5] hvm: add HVM_PARAM_VM_GENERATION_ID_ADDR
Date: Wed, 21 May 2014 14:21:04 +0100 [thread overview]
Message-ID: <1400678467-23559-3-git-send-email-david.vrabel@citrix.com> (raw)
In-Reply-To: <1400678467-23559-1-git-send-email-david.vrabel@citrix.com>
HVM_PARAM_VM_GENERATION_ID_ADDR is the guest physical address of the
VM Generation ID. This parameter will be written by hvmloader and read
by the toolstack when updating the gen. ID (e.g., after restoring from a
snapshot).
A HVM parameter is easier for the save/restore code to work with (than
a XenStore key).
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
---
xen/include/public/hvm/params.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/xen/include/public/hvm/params.h b/xen/include/public/hvm/params.h
index 517a184..c972f9e 100644
--- a/xen/include/public/hvm/params.h
+++ b/xen/include/public/hvm/params.h
@@ -145,6 +145,9 @@
/* SHUTDOWN_* action in case of a triple fault */
#define HVM_PARAM_TRIPLE_FAULT_REASON 31
-#define HVM_NR_PARAMS 32
+/* Location of the VM Generation ID in guest address space. */
+#define HVM_PARAM_VM_GENERATION_ID_ADDR 32
+
+#define HVM_NR_PARAMS 33
#endif /* __XEN_PUBLIC_HVM_PARAMS_H__ */
--
1.7.10.4
next prev parent reply other threads:[~2014-05-21 13:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-21 13:21 [PATCHv1 0/5] tools: rework VM Generation ID David Vrabel
2014-05-21 13:21 ` [PATCH 1/5] docs: update docs for the ~/platform/generation-id key David Vrabel
2014-05-21 13:21 ` David Vrabel [this message]
2014-05-21 13:45 ` [PATCH 2/5] hvm: add HVM_PARAM_VM_GENERATION_ID_ADDR Andrew Cooper
2014-05-21 13:21 ` [PATCH 3/5] tools/hvmloader: add helper functions to get/set HVM params David Vrabel
2014-05-21 13:21 ` [PATCH 4/5] libxc, libxl, hvmloader: strip out outdated VM generation ID implementation David Vrabel
2014-05-21 13:21 ` [PATCH 5/5] libxl: add libxl_vm_generation_id_set() David Vrabel
2014-05-21 16:10 ` Ian Campbell
2014-05-21 16:27 ` Paul Durrant
2014-05-21 16:07 ` [PATCHv1 0/5] tools: rework VM Generation ID Ian Campbell
2014-05-22 10:44 ` David Vrabel
2014-05-21 16:13 ` Ian Jackson
2014-05-21 16:18 ` Ian Jackson
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