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s390x/css: realize css_create_sch

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The S390 virtual css support already has a mechanism to create a
virtual subchannel and provide it to the guest. However, to
pass-through subchannels to a guest, we need to introduce a new
mechanism to create the subchannel according to the real device
information. Thus we reconstruct css_create_virtual_sch to a new
css_create_sch function to handle all these cases and do allocation
and initialization of the subchannel according to the device type
and machine configuration.

Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Message-Id: <20170517004813.58227-6-bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Dong Jia Shi 2017-05-17 02:48:05 +02:00 • committed by Cornelia Huck
parent 8f3cf0128c
commit 817d4a6bc8
7 changed files with 76 additions and 20 deletions
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1
include/hw/s390x/css-bridge.h
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@ -28,6 +28,7 @@ typedef struct VirtualCssBridge {
/* virtual css bus type */
typedef struct VirtualCssBus {
BusState parent_obj;
bool squash_mcss;
} VirtualCssBus;
#define TYPE_VIRTUAL_CSS_BUS "virtual-css-bus"