https://github.com/torvalds/linux
Revision 1f0d22defd59f603d63ba51483eeb8d72726ce8b authored by Harald Freudenberger on 30 June 2021, 14:10:56 UTC, committed by Vasily Gorbik on 08 July 2021, 13:37:27 UTC
Rework of the ap_dqap() inline function with the dqap inline assembler invocation and the caller code in ap_queue.c to be able to handle replies which exceed the receive buffer size. ap_dqap() now provides two additional parameters to handle together with the caller the case where a reply in the firmware queue entry exceeds the given message buffer size. It depends on the caller how to exactly handle this. The behavior implemented now by ap_sm_recv() in ap_queue.c is to simple purge this entry from the firmware queue and let the caller 'receive' a -EMSGSIZE for the request without delivering any reply data - not even a truncated reply message. However, the reworked ap_dqap() could now get invoked in a way that the message is received in multiple parts and the caller assembles the parts into one reply message. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Suggested-by: Juergen Christ <jchrist@linux.ibm.com> Reviewed-by: Juergen Christ <jchrist@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
1 parent bd39654
Tip revision: 1f0d22defd59f603d63ba51483eeb8d72726ce8b authored by Harald Freudenberger on 30 June 2021, 14:10:56 UTC
s390/ap: Rework ap_dqap to deal with messages greater than recv buffer
s390/ap: Rework ap_dqap to deal with messages greater than recv buffer
Tip revision: 1f0d22d
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| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 71 bytes |
| .gitattributes | -rw-r--r-- | 62 bytes |
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| .mailmap | -rw-r--r-- | 19.7 KB |
| COPYING | -rw-r--r-- | 496 bytes |
| CREDITS | -rw-r--r-- | 98.6 KB |
| Kbuild | -rw-r--r-- | 1.3 KB |
| Kconfig | -rw-r--r-- | 555 bytes |
| MAINTAINERS | -rw-r--r-- | 593.7 KB |
| Makefile | -rw-r--r-- | 64.4 KB |
| README | -rw-r--r-- | 727 bytes |
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