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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v12 08/26] libxc/migration: Specification update for DIRTY_PFN_LIST records
From: Wen Congyang <wency@xxxxxxxxxxxxxx>
Used by secondary to send it's dirty bitmap to primary under COLO.
Signed-off-by: Yang Hongyang <hongyang.yang@xxxxxxxxxxxx>
Signed-off-by: Wen Congyang <wency@xxxxxxxxxxxxxx>
Signed-off-by: Changlong Xie <xiecl.fnst@xxxxxxxxxxxxxx>
---
docs/specs/libxc-migration-stream.pandoc | 27 ++++++++++++-
tools/libxc/xc_sr_common.c | 31 ++++++++-------
tools/libxc/xc_sr_stream_format.h | 31 ++++++++-------
tools/python/xen/migration/libxc.py | 68 ++++++++++++++++++--------------
4 files changed, 96 insertions(+), 61 deletions(-)
diff --git a/docs/specs/libxc-migration-stream.pandoc
b/docs/specs/libxc-migration-stream.pandoc
index 8cd678f..31eba10 100644
--- a/docs/specs/libxc-migration-stream.pandoc
+++ b/docs/specs/libxc-migration-stream.pandoc
@@ -1,6 +1,8 @@
% LibXenCtrl Domain Image Format
% David Vrabel <<david.vrabel@xxxxxxxxxx>>
Andrew Cooper <<andrew.cooper3@xxxxxxxxxx>>
+ Wen Congyang <<wency@xxxxxxxxxxxxxx>>
+ Yang Hongyang <<hongyang.yang@xxxxxxxxxxxx>>
% Revision 1
Introduction
@@ -227,7 +229,9 @@ type 0x00000000: END
0x0000000E: CHECKPOINT
- 0x0000000F - 0x7FFFFFFF: Reserved for future _mandatory_
+ 0x0000000F: CHECKPOINT_DIRTY_PFN_LIST (Secondary -> Primary)
+
+ 0x00000010 - 0x7FFFFFFF: Reserved for future _mandatory_
records.
0x80000000 - 0xFFFFFFFF: Reserved for future _optional_
@@ -599,6 +603,27 @@ CHECKPOINT record or an END record.
\clearpage
+CHECKPOINT_DIRTY_PFN_LIST
+-------------------------
+
+A checkpoint dirty pfn list record is used to convey information about
+dirty memory in the VM. It is an unordered list of PFNs. Currently only
+applicable in the backchannel of a checkpointed stream. It is only used
+by COLO, more detail please reference README.colo.
+
+ 0 1 2 3 4 5 6 7 octet
+ +-------------------------------------------------+
+ | pfn[0] |
+ +-------------------------------------------------+
+ ...
+ +-------------------------------------------------+
+ | pfn[C-1] |
+ +-------------------------------------------------+
+
+The count of pfns is: record->length/sizeof(uint64_t).
+
+\clearpage
+
Layout
======
diff --git a/tools/libxc/xc_sr_common.c b/tools/libxc/xc_sr_common.c
index 945cfa6..3313a90 100644
--- a/tools/libxc/xc_sr_common.c
+++ b/tools/libxc/xc_sr_common.c
@@ -20,21 +20,22 @@ const char *dhdr_type_to_str(uint32_t type)
static const char *mandatory_rec_types[] =
{
- [REC_TYPE_END] = "End",
- [REC_TYPE_PAGE_DATA] = "Page data",
- [REC_TYPE_X86_PV_INFO] = "x86 PV info",
- [REC_TYPE_X86_PV_P2M_FRAMES] = "x86 PV P2M frames",
- [REC_TYPE_X86_PV_VCPU_BASIC] = "x86 PV vcpu basic",
- [REC_TYPE_X86_PV_VCPU_EXTENDED] = "x86 PV vcpu extended",
- [REC_TYPE_X86_PV_VCPU_XSAVE] = "x86 PV vcpu xsave",
- [REC_TYPE_SHARED_INFO] = "Shared info",
- [REC_TYPE_TSC_INFO] = "TSC info",
- [REC_TYPE_HVM_CONTEXT] = "HVM context",
- [REC_TYPE_HVM_PARAMS] = "HVM params",
- [REC_TYPE_TOOLSTACK] = "Toolstack",
- [REC_TYPE_X86_PV_VCPU_MSRS] = "x86 PV vcpu msrs",
- [REC_TYPE_VERIFY] = "Verify",
- [REC_TYPE_CHECKPOINT] = "Checkpoint",
+ [REC_TYPE_END] = "End",
+ [REC_TYPE_PAGE_DATA] = "Page data",
+ [REC_TYPE_X86_PV_INFO] = "x86 PV info",
+ [REC_TYPE_X86_PV_P2M_FRAMES] = "x86 PV P2M frames",
+ [REC_TYPE_X86_PV_VCPU_BASIC] = "x86 PV vcpu basic",
+ [REC_TYPE_X86_PV_VCPU_EXTENDED] = "x86 PV vcpu extended",
+ [REC_TYPE_X86_PV_VCPU_XSAVE] = "x86 PV vcpu xsave",
+ [REC_TYPE_SHARED_INFO] = "Shared info",
+ [REC_TYPE_TSC_INFO] = "TSC info",
+ [REC_TYPE_HVM_CONTEXT] = "HVM context",
+ [REC_TYPE_HVM_PARAMS] = "HVM params",
+ [REC_TYPE_TOOLSTACK] = "Toolstack",
+ [REC_TYPE_X86_PV_VCPU_MSRS] = "x86 PV vcpu msrs",
+ [REC_TYPE_VERIFY] = "Verify",
+ [REC_TYPE_CHECKPOINT] = "Checkpoint",
+ [REC_TYPE_CHECKPOINT_DIRTY_PFN_LIST] = "Checkpoint dirty pfn list",
};
const char *rec_type_to_str(uint32_t type)
diff --git a/tools/libxc/xc_sr_stream_format.h
b/tools/libxc/xc_sr_stream_format.h
index 6d0f8fd..3291b25 100644
--- a/tools/libxc/xc_sr_stream_format.h
+++ b/tools/libxc/xc_sr_stream_format.h
@@ -60,21 +60,22 @@ struct xc_sr_rhdr
/* Somewhat arbitrary - 8MB */
#define REC_LENGTH_MAX (8U << 20)
-#define REC_TYPE_END 0x00000000U
-#define REC_TYPE_PAGE_DATA 0x00000001U
-#define REC_TYPE_X86_PV_INFO 0x00000002U
-#define REC_TYPE_X86_PV_P2M_FRAMES 0x00000003U
-#define REC_TYPE_X86_PV_VCPU_BASIC 0x00000004U
-#define REC_TYPE_X86_PV_VCPU_EXTENDED 0x00000005U
-#define REC_TYPE_X86_PV_VCPU_XSAVE 0x00000006U
-#define REC_TYPE_SHARED_INFO 0x00000007U
-#define REC_TYPE_TSC_INFO 0x00000008U
-#define REC_TYPE_HVM_CONTEXT 0x00000009U
-#define REC_TYPE_HVM_PARAMS 0x0000000aU
-#define REC_TYPE_TOOLSTACK 0x0000000bU
-#define REC_TYPE_X86_PV_VCPU_MSRS 0x0000000cU
-#define REC_TYPE_VERIFY 0x0000000dU
-#define REC_TYPE_CHECKPOINT 0x0000000eU
+#define REC_TYPE_END 0x00000000U
+#define REC_TYPE_PAGE_DATA 0x00000001U
+#define REC_TYPE_X86_PV_INFO 0x00000002U
+#define REC_TYPE_X86_PV_P2M_FRAMES 0x00000003U
+#define REC_TYPE_X86_PV_VCPU_BASIC 0x00000004U
+#define REC_TYPE_X86_PV_VCPU_EXTENDED 0x00000005U
+#define REC_TYPE_X86_PV_VCPU_XSAVE 0x00000006U
+#define REC_TYPE_SHARED_INFO 0x00000007U
+#define REC_TYPE_TSC_INFO 0x00000008U
+#define REC_TYPE_HVM_CONTEXT 0x00000009U
+#define REC_TYPE_HVM_PARAMS 0x0000000aU
+#define REC_TYPE_TOOLSTACK 0x0000000bU
+#define REC_TYPE_X86_PV_VCPU_MSRS 0x0000000cU
+#define REC_TYPE_VERIFY 0x0000000dU
+#define REC_TYPE_CHECKPOINT 0x0000000eU
+#define REC_TYPE_CHECKPOINT_DIRTY_PFN_LIST 0x0000000fU
#define REC_TYPE_OPTIONAL 0x80000000U
diff --git a/tools/python/xen/migration/libxc.py
b/tools/python/xen/migration/libxc.py
index b0255ac..85a78f4 100644
--- a/tools/python/xen/migration/libxc.py
+++ b/tools/python/xen/migration/libxc.py
@@ -45,38 +45,40 @@ dhdr_type_to_str = {
# Records
RH_FORMAT = "II"
-REC_TYPE_end = 0x00000000
-REC_TYPE_page_data = 0x00000001
-REC_TYPE_x86_pv_info = 0x00000002
-REC_TYPE_x86_pv_p2m_frames = 0x00000003
-REC_TYPE_x86_pv_vcpu_basic = 0x00000004
-REC_TYPE_x86_pv_vcpu_extended = 0x00000005
-REC_TYPE_x86_pv_vcpu_xsave = 0x00000006
-REC_TYPE_shared_info = 0x00000007
-REC_TYPE_tsc_info = 0x00000008
-REC_TYPE_hvm_context = 0x00000009
-REC_TYPE_hvm_params = 0x0000000a
-REC_TYPE_toolstack = 0x0000000b
-REC_TYPE_x86_pv_vcpu_msrs = 0x0000000c
-REC_TYPE_verify = 0x0000000d
-REC_TYPE_checkpoint = 0x0000000e
+REC_TYPE_end = 0x00000000
+REC_TYPE_page_data = 0x00000001
+REC_TYPE_x86_pv_info = 0x00000002
+REC_TYPE_x86_pv_p2m_frames = 0x00000003
+REC_TYPE_x86_pv_vcpu_basic = 0x00000004
+REC_TYPE_x86_pv_vcpu_extended = 0x00000005
+REC_TYPE_x86_pv_vcpu_xsave = 0x00000006
+REC_TYPE_shared_info = 0x00000007
+REC_TYPE_tsc_info = 0x00000008
+REC_TYPE_hvm_context = 0x00000009
+REC_TYPE_hvm_params = 0x0000000a
+REC_TYPE_toolstack = 0x0000000b
+REC_TYPE_x86_pv_vcpu_msrs = 0x0000000c
+REC_TYPE_verify = 0x0000000d
+REC_TYPE_checkpoint = 0x0000000e
+REC_TYPE_checkpoint_dirty_pfn_list = 0x0000000f
rec_type_to_str = {
- REC_TYPE_end : "End",
- REC_TYPE_page_data : "Page data",
- REC_TYPE_x86_pv_info : "x86 PV info",
- REC_TYPE_x86_pv_p2m_frames : "x86 PV P2M frames",
- REC_TYPE_x86_pv_vcpu_basic : "x86 PV vcpu basic",
- REC_TYPE_x86_pv_vcpu_extended : "x86 PV vcpu extended",
- REC_TYPE_x86_pv_vcpu_xsave : "x86 PV vcpu xsave",
- REC_TYPE_shared_info : "Shared info",
- REC_TYPE_tsc_info : "TSC info",
- REC_TYPE_hvm_context : "HVM context",
- REC_TYPE_hvm_params : "HVM params",
- REC_TYPE_toolstack : "Toolstack",
- REC_TYPE_x86_pv_vcpu_msrs : "x86 PV vcpu msrs",
- REC_TYPE_verify : "Verify",
- REC_TYPE_checkpoint : "Checkpoint",
+ REC_TYPE_end : "End",
+ REC_TYPE_page_data : "Page data",
+ REC_TYPE_x86_pv_info : "x86 PV info",
+ REC_TYPE_x86_pv_p2m_frames : "x86 PV P2M frames",
+ REC_TYPE_x86_pv_vcpu_basic : "x86 PV vcpu basic",
+ REC_TYPE_x86_pv_vcpu_extended : "x86 PV vcpu extended",
+ REC_TYPE_x86_pv_vcpu_xsave : "x86 PV vcpu xsave",
+ REC_TYPE_shared_info : "Shared info",
+ REC_TYPE_tsc_info : "TSC info",
+ REC_TYPE_hvm_context : "HVM context",
+ REC_TYPE_hvm_params : "HVM params",
+ REC_TYPE_toolstack : "Toolstack",
+ REC_TYPE_x86_pv_vcpu_msrs : "x86 PV vcpu msrs",
+ REC_TYPE_verify : "Verify",
+ REC_TYPE_checkpoint : "Checkpoint",
+ REC_TYPE_checkpoint_dirty_pfn_list : "Checkpoint dirty pfn list"
}
# page_data
@@ -403,6 +405,10 @@ class VerifyLibxc(VerifyBase):
if len(content) != 0:
raise RecordError("Checkpoint record with non-zero length")
+ def verify_record_checkpoint_dirty_pfn_list(self, content):
+ """ checkpoint dirty pfn list """
+ raise RecordError("Found checkpoint dirty pfn list record in stream")
+
record_verifiers = {
REC_TYPE_end:
@@ -443,4 +449,6 @@ record_verifiers = {
VerifyLibxc.verify_record_verify,
REC_TYPE_checkpoint:
VerifyLibxc.verify_record_checkpoint,
+ REC_TYPE_checkpoint_dirty_pfn_list:
+ VerifyLibxc.verify_record_checkpoint_dirty_pfn_list,
}
--
1.9.3
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