From: David Vrabel <david.vrabel@citrix.com>
To: xen-devel@lists.xenproject.org
Cc: 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 2/6] hvm: add HVM_PARAM_VM_GENERATION_ID_ADDR
Date: Tue, 27 May 2014 18:31:45 +0100 [thread overview]
Message-ID: <1401211909-27771-3-git-send-email-david.vrabel@citrix.com> (raw)
In-Reply-To: <1401211909-27771-1-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..4d7c692 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 physical 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:[~2014-05-27 17:31 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-27 17:31 [PATCHv2 0/6] tools: rework VM Generation ID David Vrabel
2014-05-27 17:31 ` [PATCH 1/6] docs: update docs for the ~/platform/generation-id key David Vrabel
2014-05-28 14:44 ` Ian Campbell
2014-05-28 14:51 ` Andrew Cooper
2014-05-28 14:58 ` Ian Campbell
2014-05-27 17:31 ` David Vrabel [this message]
2014-05-27 17:31 ` [PATCH 3/6] tools/hvmloader: add helper functions to get/set HVM params David Vrabel
2014-05-27 17:31 ` [PATCH 4/6] libxc, libxl, hvmloader: strip out outdated VM generation ID implementation David Vrabel
2014-05-28 14:50 ` Ian Campbell
2014-06-02 9:23 ` David Vrabel
2014-05-27 17:31 ` [PATCH 5/6] libxl: add libxl_vm_generation_id_set() David Vrabel
2014-05-28 14:56 ` Ian Campbell
2014-06-02 9:25 ` David Vrabel
2014-05-27 17:31 ` [PATCH 6/6] xl: generate a new random VM generation ID if requested David Vrabel
-- strict thread matches above, loose matches on Subject: below --
2014-06-03 13:15 [PATCHv3 0/6] tools: rework VM Generation ID David Vrabel
2014-06-03 13:15 ` [PATCH 2/6] hvm: add HVM_PARAM_VM_GENERATION_ID_ADDR David Vrabel
2014-06-03 13:19 ` Andrew Cooper
2014-06-10 10:27 ` Ian Campbell
2014-06-10 10:40 ` Jan Beulich
2014-06-10 10:44 ` Andrew Cooper
2014-06-10 10:49 ` Jan Beulich
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