12:24 p.m.
The patch to the Windows registry allowing it to boot off a virtio-blk
drive was initially conceived by comparing the state with virtio-blk
driver properly installed, to that without.
However, we don't want to replicate the Windows PnP system; rather we
need to apply just enough edits to make the system boot, and then let
the Windows PnP manager figure out the rest.
It turned out (by trial and error) that for Windows >= 8 / 2012 the
"just enough" set includes only the service entry for the driver, and a
few entries under DriverDatabase.
Tested on
Win 8 x32
Win 8 x64
Win 8.1 x32
Win 8.1 x64
Win 2012R2 x64
Win 10 x64
Signed-off-by: Roman Kagan <rkagan(a)virtuozzo.com>
---
v2v/windows_virtio.ml | 144 +-------------------------------------------------
1 file changed, 2 insertions(+), 142 deletions(-)
diff --git a/v2v/windows_virtio.ml b/v2v/windows_virtio.ml
index 7796a0f..738fa11 100644
--- a/v2v/windows_virtio.ml
+++ b/v2v/windows_virtio.ml
@@ -197,77 +197,16 @@ and add_viostor_to_driver_database g root arch current_cs =
if value = 0_L then oem_inf else loop node (i+1)
in
let oem_inf = loop node 1 in
- (* Create the key. *)
- g#hivex_node_set_value node oem_inf (* REG_NONE *) 0_L "";
oem_inf in
- (* There should be a key
- * HKLM\SYSTEM\ControlSet001\Control\Class\<scsi_adapter_guid>
- * There may be subkey(s) of this called "0000", "0001" etc. We
want
- * to create the next free subkey. MSFT covers the key here:
- * https://technet.microsoft.com/en-us/library/cc957341.aspx
- * That page incorrectly states that the key has the form "000n".
- * In fact we observed from real registries that the key is a
- * decimal number that goes 0009 -> 0010 etc.
- *)
- let controller_path =
- [ current_cs; "Control"; "Class"; scsi_adapter_guid ] in
- let controller_offset = get_controller_offset g root controller_path in
-
let regedits = [
- controller_path @ [ controller_offset ],
- [ "DriverDate", REG_SZ "6-4-2014";
- "DriverDateData", REG_BINARY
"\x00\x40\x90\xed\x87\x7f\xcf\x01";
- "DriverDesc", REG_SZ "Red Hat VirtIO SCSI controller";
- "DriverVersion", REG_SZ "62.71.104.8600" (* XXX *);
- "InfPath", REG_SZ oem_inf;
- "InfSection", REG_SZ "rhelscsi_inst";
- "MatchingDeviceId", REG_SZ
"PCI\\VEN_1AF4&DEV_1001&SUBSYS_00021AF4&REV_00";
- "ProviderName", REG_SZ "Red Hat, Inc." ];
-
- [ current_cs; "Enum"; "PCI";
"VEN_1AF4&DEV_1001&SUBSYS_00021AF4&REV_00\\3&13c0b0c5&0&38"
],
- [ "Capabilities", REG_DWORD 0x6_l;
- "ClassGUID", REG_SZ scsi_adapter_guid;
- "CompatibleIDs", REG_MULTI_SZ [
- "PCI\\VEN_1AF4&DEV_1001&REV_00";
- "PCI\\VEN_1AF4&DEV_1001";
- "PCI\\VEN_1AF4&CC_010000";
- "PCI\\VEN_1AF4&CC_0100";
- "PCI\\VEN_1AF4";
- "PCI\\CC_010000";
- "PCI\\CC_0100";
- ];
- "ConfigFlags", REG_DWORD 0_l;
- "ContainerID", REG_SZ
"{00000000-0000-0000-ffff-ffffffffffff}";
- "DeviceDesc", REG_SZ (sprintf "(a)%s,%%rhelscsi.devicedesc%%;Red Hat
VirtIO SCSI controller" oem_inf);
- "Driver", REG_SZ (sprintf "%s\\%s" scsi_adapter_guid
controller_offset);
- "HardwareID", REG_MULTI_SZ [
-
"PCI\\VEN_1AF4&DEV_1001&SUBSYS_00021AF4&REV_00";
- "PCI\\VEN_1AF4&DEV_1001&SUBSYS_00021AF4";
- "PCI\\VEN_1AF4&DEV_1001&CC_010000";
- "PCI\\VEN_1AF4&DEV_1001&CC_0100";
- ];
- "LocationInformation", REG_SZ
"(a)System32\\drivers\\pci.sys,#65536;PCI bus %1, device %2, function
%3;(0,7,0)";
- "Mfg", REG_SZ (sprintf "@%s,%%rhel%%;Red Hat, Inc."
oem_inf);
- "ParentIdPrefix", REG_SZ "4&87f7bfb&0";
- "Service", REG_SZ "viostor";
- "UINumber", REG_DWORD 0x7_l ];
-
[ current_cs; "Services"; "viostor" ],
[ "ErrorControl", REG_DWORD 0x1_l;
"Group", REG_SZ "SCSI miniport";
"ImagePath", REG_EXPAND_SZ "system32\\drivers\\viostor.sys";
- "Owners", REG_MULTI_SZ [ oem_inf ];
"Start", REG_DWORD 0x0_l;
- "Tag", REG_DWORD 0x58_l;
"Type", REG_DWORD 0x1_l ];
- [ current_cs; "Services"; "viostor"; "Parameters" ],
- [ "BusType", REG_DWORD 0x1_l ];
-
- [ current_cs; "Services"; "viostor"; "Parameters";
"PnpInterface" ],
- [ "5", REG_DWORD 0x1_l ];
-
[ "DriverDatabase"; "DriverInfFiles"; oem_inf ],
[ "", REG_MULTI_SZ [ viostor_inf ];
"Active", REG_SZ viostor_inf;
@@ -277,94 +216,15 @@ and add_viostor_to_driver_database g root arch current_cs =
[ "DriverDatabase"; "DeviceIds"; "PCI";
"VEN_1AF4&DEV_1001&SUBSYS_00021AF4&REV_00" ],
[ oem_inf, REG_BINARY "\x01\xff\x00\x00" ];
- [ "DriverDatabase"; "DriverPackages"; viostor_inf ],
- [ "", REG_SZ oem_inf;
- "F6", REG_DWORD 0x1_l;
- "InfName", REG_SZ "viostor.inf";
- "OemPath", REG_SZ
("X:\\windows\\System32\\DriverStore\\FileRepository\\" ^ viostor_inf);
- "Provider", REG_SZ "Red Hat, Inc.";
- "SignerName", REG_SZ "Microsoft Windows Hardware Compatibility
Publisher";
- "SignerScore", REG_DWORD 0x0d000005_l;
- "StatusFlags", REG_DWORD 0x00000012_l;
- (* NB: scsi_adapter_guid appears inside this string. *)
- "Version", REG_BINARY
"\x00\xff\x09\x00\x00\x00\x00\x00\x7b\xe9\x36\x4d\x25\xe3\xce\x11\xbf\xc1\x08\x00\x2b\xe1\x03\x18\x00\x40\x90\xed\x87\x7f\xcf\x01\x98\x21\x68\x00\x47\x00\x3e\x00\x00\x00\x00\x00\x00\x00\x00\x00"
];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Configurations" ],
- [];
-
[ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Configurations"; "rhelscsi_inst" ],
[ "ConfigFlags", REG_DWORD 0_l;
"Service", REG_SZ "viostor" ];
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Configurations"; "rhelscsi_inst"; "Device" ],
- [];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Configurations"; "rhelscsi_inst"; "Device"; "Interrupt
Management" ],
- [];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Configurations"; "rhelscsi_inst"; "Device"; "Interrupt
Management"; "Affinity Policy" ],
- [ "DevicePolicy", REG_DWORD 0x00000005_l ];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Configurations"; "rhelscsi_inst"; "Device"; "Interrupt
Management"; "MessageSignaledInterruptProperties" ],
- [ "MSISupported", REG_DWORD 0x00000001_l;
- "MessageNumberLimit", REG_DWORD 0x00000002_l ];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Configurations"; "rhelscsi_inst"; "Services" ],
- [];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Configurations"; "rhelscsi_inst"; "Services";
"viostor" ],
- [];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Configurations"; "rhelscsi_inst"; "Services";
"viostor"; "Parameters" ],
- [ "BusType", REG_DWORD 0x00000001_l ];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Configurations"; "rhelscsi_inst"; "Services";
"viostor"; "Parameters"; "PnpInterface" ],
- [ "5", REG_DWORD 0x00000001_l ];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Descriptors" ],
- [];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Descriptors"; "PCI" ],
- [];
-
[ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Descriptors"; "PCI";
"VEN_1AF4&DEV_1001&SUBSYS_00021AF4&REV_00" ],
- [ "Configuration", REG_SZ "rhelscsi_inst";
- "Description", REG_SZ "%rhelscsi.devicedesc%";
- "Manufacturer", REG_SZ "%rhel%" ];
-
- [ "DriverDatabase"; "DriverPackages"; viostor_inf;
"Strings" ],
- [ "rhel", REG_SZ "Red Hat, Inc.";
- "rhelscsi.devicedesc", REG_SZ "Red Hat VirtIO SCSI
controller" ];
+ [ "Configuration", REG_SZ "rhelscsi_inst" ]
] in
- reg_import g root regedits;
-
-(*
- A few more keys which we don't add above. Note that "oem1.inf" ==
- 6f,00,65,00,6d,00,31,00,2e,00,69,00,6e,00,66,00.
-
-
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\PCI\VEN_1AF4&DEV_1001&SUBSYS_00021AF4&REV_00\3&13c0b0c5&0&38\Properties\{540b947e-8b40-45bc-a8a2-6a0b894cbda2}\0007]
-
@=hex(ffff0012):6f,00,65,00,6d,00,31,00,2e,00,69,00,6e,00,66,00,3a,00,50,00,43,00,49,00,5c,00,56,00,45,00,4e,00,5f,00,31,00,41,00,46,00,34,00,26,00,44,00,45,00,56,00,5f,00,31,00,30,00,30,00,31,00,26,00,53,00,55,00,42,00,53,00,59,00,53,00,5f,00,30,00,30,00,30,00,32,00,31,00,41,00,46,00,34,00,26,00,52,00,45,00,56,00,5f,00,30,00,30,00,2c,00,72,00,68,00,65,00,6c,00,73,00,63,00,73,00,69,00,5f,00,69,00,6e,00,73,00,74,00,00,00
-
-
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\PCI\VEN_1AF4&DEV_1001&SUBSYS_00021AF4&REV_00\3&13c0b0c5&0&38\Properties\{83da6326-97a6-4088-9453-a1923f573b29}\0003]
-
@=hex(ffff0012):6f,00,65,00,6d,00,31,00,2e,00,69,00,6e,00,66,00,3a,00,32,00,65,00,35,00,31,00,37,00,32,00,63,00,33,00,62,00,33,00,37,00,62,00,65,00,39,00,39,00,38,00,3a,00,72,00,68,00,65,00,6c,00,73,00,63,00,73,00,69,00,5f,00,69,00,6e,00,73,00,74,00,3a,00,36,00,32,00,2e,00,37,00,31,00,2e,00,31,00,30,00,34,00,2e,00,38,00,36,00,30,00,30,00,3a,00,50,00,43,00,49,00,5c,00,56,00,45,00,4e,00,5f,00,31,00,41,00,46,00,34,00,26,00,44,00,45,00,56,00,5f,00,31,00,30,00,30,00,31,00,26,00,53,00,55,00,42,00,53,00,59,00,53,00,5f,00,30,00,30,00,30,00,32,00,31,00,41,00,46,00,34,00,26,00,52,00,45,00,56,00,5f,00,30,00,30,00,00,00
-
-
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\PCI\VEN_1AF4&DEV_1001&SUBSYS_00021AF4&REV_00\3&13c0b0c5&0&38\Properties\{a8b865dd-2e3d-4094-ad97-e593a70c75d6}\0005]
- @=hex(ffff0012):6f,00,65,00,6d,00,31,00,2e,00,69,00,6e,00,66,00,00,00
-*)
-
-and get_controller_offset g root controller_path =
- match Windows.get_node g root controller_path with
- | None ->
- error (f_"cannot find HKLM\\SYSTEM\\%s in the guest registry")
- (String.concat "\\" controller_path)
- | Some node ->
- let rec loop node i =
- let controller_offset = sprintf "%04d" i in
- let child = g#hivex_node_get_child node controller_offset in
- if child = 0_L then controller_offset else loop node (i+1)
- in
- loop node 0
+ reg_import g root regedits
(* Copy the matching drivers to the driverdir; return true if any have
* been copied.
--
2.5.5