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3746d48c55
The interception handler for the PQAP(AQIC) command calls the kvm_s390_gisc_register function to register the guest ISC with the channel subsystem. If that call fails, the status response code 08 - indicating Invalid ZONE/GISA designation - is returned to the guest. This response code is not valid because setting the ZONE/GISA values is the responsibility of the hypervisor controlling the guest and there is nothing that can be done from the guest perspective to correct that problem. The likelihood of GISC registration failure is nil and there is no status response code to indicate an invalid ISC value, so let's set the response code to 06 indicating 'Invalid address of AP-queue notification byte'. While this is not entirely accurate, it is better than setting a response code which makes no sense for the guest. Signed-off-by: Anthony Krowiak <akrowiak@linux.ibm.com> Suggested-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Harald Freudenberger <freude@linux.ibm.com> Link: https://lore.kernel.org/r/20231109164427.460493-3-akrowiak@linux.ibm.com Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.