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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 4/8] hvm: add HVM_PARAM_VM_GENERATION_ID_ADDR
Date: Thu, 12 Jun 2014 16:04:34 +0100	[thread overview]
Message-ID: <1402585478-3389-5-git-send-email-david.vrabel@citrix.com> (raw)
In-Reply-To: <1402585478-3389-1-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>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jan Beulich <jbeulich@suse.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 f830bdd..614ff5f 100644
--- a/xen/include/public/hvm/params.h
+++ b/xen/include/public/hvm/params.h
@@ -148,6 +148,9 @@
 #define HVM_PARAM_IOREQ_SERVER_PFN 32
 #define HVM_PARAM_NR_IOREQ_SERVER_PAGES 33
 
-#define HVM_NR_PARAMS          34
+/* Location of the VM Generation ID in guest physical address space. */
+#define HVM_PARAM_VM_GENERATION_ID_ADDR 34
+
+#define HVM_NR_PARAMS          35
 
 #endif /* __XEN_PUBLIC_HVM_PARAMS_H__ */
-- 
1.7.10.4

  parent reply	other threads:[~2014-06-12 15:05 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-12 15:04 [PATCHv5 0/8] tools: rework VM Generation ID David Vrabel
2014-06-12 15:04 ` [PATCH 1/8] libxc: allow xc_get/set_hvm_param() to get/set 64-bit values David Vrabel
2014-06-18 11:26   ` Ian Campbell
2014-06-18 13:05   ` Ian Campbell
2014-06-12 15:04 ` [PATCH 2/8] libxl: add libxl__random_bytes() which fills a buffer with random bytes David Vrabel
2014-06-18 11:28   ` Ian Campbell
2014-06-18 11:43     ` Roger Pau Monné
2014-06-18 13:10       ` Ian Campbell
2014-06-12 15:04 ` [PATCH 3/8] hvmloader: add helper functions to get/set HVM params David Vrabel
2014-06-12 15:04 ` David Vrabel [this message]
2014-06-12 15:04 ` [PATCH 5/8] libxc, libxl, hvmloader: strip out outdated VM generation ID implementation David Vrabel
2014-06-12 15:04 ` [PATCH 6/8] libxl: allow a generation ID to be specified at domain creation David Vrabel
2014-06-18  5:18   ` Hongyang Yang
2014-06-18  9:38     ` David Vrabel
2014-06-18  9:39       ` Ian Campbell
2014-06-18 11:33   ` Ian Campbell
2014-06-18 12:09     ` David Vrabel
2014-06-18 12:25       ` Ian Campbell
2014-06-18 13:22         ` David Vrabel
2014-06-12 15:04 ` [PATCH 7/8] xl: generate a new random VM generation ID if requested David Vrabel
2014-06-18 11:37   ` Ian Campbell
2014-06-12 15:04 ` [PATCH 8/8] docs: update docs for the ~/platform/generation-id key David Vrabel
2014-06-18 16:12 [PATCHv6 0/8] tools: rework VM Generation ID David Vrabel
2014-06-18 16:12 ` [PATCH 4/8] hvm: add HVM_PARAM_VM_GENERATION_ID_ADDR David Vrabel

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