From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Collin Walling Subject: [PATCH v4 0/2] Use DIAG318 to set Control Program Name & Version Codes Date: Wed, 1 May 2019 18:51:01 -0400 Message-Id: <1556751063-21835-1-git-send-email-walling@linux.ibm.com> Sender: kvm-owner@vger.kernel.org List-Archive: List-Post: To: cohuck@redhat.com, david@redhat.com, pbonzini@redhat.com, kvm@vger.kernel.org, linux-s390@vger.kernel.org List-ID: Changelog: v4 - removed setup.c changes introduced in bullet 1 of v3 - kept diag318_info struct cleanup - analogous QEMU patches: https://lists.gnu.org/archive/html/qemu-devel/2019-05/msg00164.html v3 - kernel patch for diag 0x318 instruction call fixup [removed in v4] - removed CPU model code - cleaned up diag318_info struct - cpnc is no longer unshadowed as it was not needed - rebased on 5.1.0-rc3 This instruction call is executed once-and-only-once during Kernel setup. The availability of this instruction depends on Read SCP Info byte 134, bit 0. Diagnose318's functionality is also emulated by KVM, which means we can enable this feature for a guest even if the host kernel cannot support it. The CPNC and CPVC are used for problem diagnosis and allows IBM to identify control program information by answering the following question: "What environment is this guest running in?" (CPNC) "What are more details regarding the OS?" (CPVC) In the future, we will implement the Control Program Version Code (CPVC) to convey more information about the OS. For now, we set this field to 0 until we come up with a solid plan. Collin Walling (2): s390/setup: diag318: refactor struct s390/kvm: diagnose 318 handling Documentation/virtual/kvm/devices/vm.txt | 14 ++++++ arch/s390/include/asm/diag.h | 6 +-- arch/s390/include/asm/kvm_host.h | 7 ++- arch/s390/include/uapi/asm/kvm.h | 4 ++ arch/s390/kernel/setup.c | 3 +- arch/s390/kvm/diag.c | 17 +++++++ arch/s390/kvm/kvm-s390.c | 83 ++++++++++++++++++++++++++++++++ arch/s390/kvm/kvm-s390.h | 1 + arch/s390/kvm/vsie.c | 2 + 9 files changed, 129 insertions(+), 8 deletions(-) -- 2.7.4