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Filename Latest commit message Latest commit date
Tony Krowiak 112c24d4dc KVM: s390: CPU model support for AP virtualization
Introduces two new CPU model facilities to support
AP virtualization for KVM guests:

1. AP Query Configuration Information (QCI) facility is installed.

   This is indicated by setting facilities bit 12 for
   the guest. The kernel will not enable this facility
   for the guest if it is not set on the host.

   If this facility is not set for the KVM guest, then only
   APQNs with an APQI less than 16 will be used by a Linux
   guest regardless of the matrix configuration for the virtual
   machine. This is a limitation of the Linux AP bus.

2. AP Facilities Test facility (APFT) is installed.

   This is indicated by setting facilities bit 15 for
   the guest. The kernel will not enable this facility for
   the guest if it is not set on the host.

   If this facility is not set for the KVM guest, then no
   AP devices will be available to the guest regardless of
   the guest's matrix configuration for the virtual
   machine. This is a limitation of the Linux AP bus.

Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Tested-by: Michael Mueller <mimu@linux.ibm.com>
Tested-by: Farhan Ali <alifm@linux.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20180925231641.4954-26-akrowiak@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2018-09-28 15:50:11 +02:00
arch KVM: s390: CPU model support for AP virtualization 2018-09-28 15:50:11 +02:00
block blk-cgroup: increase number of supported policies 2018-09-11 10:59:53 -06:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto
Documentation Code of Conduct: Let's revamp it. 2018-09-16 11:42:28 -07:00
drivers s390: vfio-ap: implement VFIO_DEVICE_RESET ioctl 2018-09-28 15:50:11 +02:00
firmware
fs fixes for four CIFS/SMB3 potential pointer overflow issues, one minor build fix, and a build warning cleanup 2018-09-14 19:33:42 -10:00
include s390: vfio-ap: implement VFIO_DEVICE_GET_INFO ioctl 2018-09-28 15:50:11 +02:00
init Kbuild updates for v4.19 (2nd) 2018-08-25 13:40:38 -07:00
ipc ipc/shm: properly return EIDRM in shm_lock() 2018-09-04 16:45:02 -07:00
kernel Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-09-15 08:00:37 -10:00
lib lib/Kconfig.debug: fix three typos in help text 2018-09-04 16:45:02 -07:00
LICENSES
mm overlayfs fixes for 4.19-rc4 2018-09-13 19:21:40 -10:00
net tipc: check return value of __tipc_dump_start() 2018-09-12 13:15:04 -07:00
samples
scripts Kbuild fixes for v4.19 2018-09-09 05:42:11 -07:00
security Revert "x86/mm/legacy: Populate the user page-table with user pgd's" 2018-09-14 17:08:45 +02:00
sound ALSA: hda: Fix several mismatch for register mask and value 2018-09-03 23:47:40 +02:00
tools Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-09-15 06:44:32 -10:00
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/ 2018-08-22 23:21:44 +09:00
virt KVM: Remove obsolete kvm_unmap_hva notifier backend 2018-09-07 15:06:02 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS s390: vfio-ap: register matrix device with VFIO mdev framework 2018-09-26 20:45:51 +02:00
Makefile Linux 4.19-rc4 2018-09-16 11:52:37 -07:00
README

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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.