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Under certain specified conditions, the Test AP Queue (TAPQ) subfunction of the Process Adjunct Processor Queue (PQAP) instruction will be intercepted by a guest VM. The guest VM must have a means for executing the intercepted instruction. The vfio_ap driver will provide an interface to execute the PQAP(TAPQ) instruction subfunction on behalf of a guest VM. The code for executing the AP instructions currently resides in the AP bus. This patch refactors the AP bus code to externalize access to the PQAP(TAPQ) instruction subfunction to make it available to the vfio_ap driver. Signed-off-by: Tony Krowiak <akrowiak@linux.vnet.ibm.com> Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
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