Changes in Makefile

c9f721ed - KVM: s390: move some gmap shadowing functions away from mm/gmap.c

Thu, 23 Jan 2025 14:46:21 +0000

KVM: s390: move some gmap shadowing functions away from mm/gmap.cMove some gmap shadowing functions from mm/gmap.c to kvm/kvm-s390.c andthe newly created kvm/gmap-vsie.cThis is a step toward removing gmap from mm.Reviewed-by: Janosch Frank Reviewed-by: Christoph Schlameuss Link: https://lore.kernel.org/r/20250123144627.312456-10-imbrenda@linux.ibm.comSigned-off-by: Claudio Imbrenda Message-ID: <20250123144627.312456-10-imbrenda@linux.ibm.com> List of files: /linux-6.15/arch/s390/kvm/Makefile

5cbe2435 - KVM: s390: move pv gmap functions into kvm

Thu, 23 Jan 2025 14:46:17 +0000

KVM: s390: move pv gmap functions into kvmMove gmap related functions from kernel/uv into kvm.Create a new file to collect gmap-related functions.Reviewed-by: Janosch Frank Reviewed-by: Christoph Schlameuss [fixed unpack_one(), thanks mhartmay@linux.ibm.com]Link: https://lore.kernel.org/r/20250123144627.312456-6-imbrenda@linux.ibm.comSigned-off-by: Claudio Imbrenda Message-ID: <20250123144627.312456-6-imbrenda@linux.ibm.com> List of files: /linux-6.15/arch/s390/kvm/Makefile

6438e307 - KVM: s390: pci: add basic kvm_zdev structure

Mon, 06 Jun 2022 20:33:15 +0000

KVM: s390: pci: add basic kvm_zdev structureThis structure will be used to carry kvm passthrough information related tozPCI devices.Reviewed-by: Niklas Schnelle Reviewed-by: Pierre Morel Reviewed-by: Christian Borntraeger Signed-off-by: Matthew Rosato Link: https://lore.kernel.org/r/20220606203325.110625-12-mjrosato@linux.ibm.comSigned-off-by: Christian Borntraeger List of files: /linux-6.15/arch/s390/kvm/Makefile

f786ab1b - KVM: s390: Use Makefile.kvm for common files

Sun, 21 Nov 2021 12:54:42 +0000

KVM: s390: Use Makefile.kvm for common filesSigned-off-by: David Woodhouse Reviewed-by: Christian Borntraeger Message-Id: <20211121125451.9489-4-dwmw2@infradead.org>Signed-off-by: Paolo Bonzini List of files: /linux-6.15/arch/s390/kvm/Makefile

cb082bfa - KVM: stats: Add fd-based API to read binary stats data

Fri, 18 Jun 2021 22:27:04 +0000

KVM: stats: Add fd-based API to read binary stats dataThis commit defines the API for userspace and prepare the commonfunctionalities to support per VM/VCPU binary stats data readings.The KVM stats now is only accessible by debugfs, which has someshortcomings this change series are supposed to fix:1. The current debugfs stats solution in KVM could be disabled when kernel Lockdown mode is enabled, which is a potential rick for production.2. The current debugfs stats solution in KVM is organized as "one stats per file", it is good for debugging, but not efficient for production.3. The stats read/clear in current debugfs solution in KVM are protected by the global kvm_lock.Besides that, there are some other benefits with this change:1. All KVM VM/VCPU stats can be read out in a bulk by one copy to userspace.2. A schema is used to describe KVM statistics. From userspace's perspective, the KVM statistics are self-describing.3. With the fd-based solution, a separate telemetry would be able to read KVM stats in a less privileged environment.4. After the initial setup by reading in stats descriptors, a telemetry only needs to read the stats data itself, no more parsing or setup is needed.Reviewed-by: David Matlack Reviewed-by: Ricardo Koller Reviewed-by: Krish Sadhukhan Reviewed-by: Fuad Tabba Tested-by: Fuad Tabba #arm64Signed-off-by: Jing Zhang Message-Id: <20210618222709.1858088-3-jingzhangos@google.com>Signed-off-by: Paolo Bonzini List of files: /linux-6.15/arch/s390/kvm/Makefile

29b40f10 - KVM: s390: protvirt: Add initial vm and cpu lifecycle handling

Mon, 30 Sep 2019 08:19:18 +0000

KVM: s390: protvirt: Add initial vm and cpu lifecycle handlingThis contains 3 main changes:1. changes in SIE control block handling for secure guests2. helper functions for create/destroy/unpack secure guests3. KVM_S390_PV_COMMAND ioctl to allow userspace dealing with securemachinesSigned-off-by: Janosch Frank Reviewed-by: David Hildenbrand Reviewed-by: Cornelia Huck [borntraeger@de.ibm.com: patch merging, splitting, fixing]Signed-off-by: Christian Borntraeger List of files: /linux-6.15/arch/s390/kvm/Makefile

940f89a5 - KVM: s390: Remove redundant license text

Fri, 24 Nov 2017 14:00:39 +0000

KVM: s390: Remove redundant license textNow that the SPDX tag is in all arch/s390/kvm/ files, that identifiesthe license in a specific and legally-defined manner. So the extra GPLtext wording can be removed as it is no longer needed at all.This is done on a quest to remove the 700+ different ways that files inthe kernel describe the GPL license text. And there's unneeded stufflike the address (sometimes incorrect) for the FSF which is neverneeded.No copyright headers or other non-license-description text was removed.Cc: Christian Borntraeger Cc: Cornelia Huck Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: "Paul E. McKenney" Signed-off-by: Greg Kroah-Hartman Message-Id: <20171124140043.10062-9-gregkh@linuxfoundation.org>Acked-by: Cornelia Huck Acked-by: "Paul E. McKenney" Signed-off-by: Christian Borntraeger List of files: /linux-6.15/arch/s390/kvm/Makefile

d809aa23 - KVM: s390: add SPDX identifiers to the remaining files

Fri, 24 Nov 2017 14:00:33 +0000

KVM: s390: add SPDX identifiers to the remaining filesIt's good to have SPDX identifiers in all files to make it easier toaudit the kernel tree for correct licenses.Update the arch/s390/kvm/ files with the correct SPDX licenseidentifier based on the license text in the file itself. The SPDXidentifier is a legally binding shorthand, which can be used instead ofthe full boiler plate text.This work is based on a script and data from Thomas Gleixner, PhilippeOmbredanne, and Kate Stewart.Cc: Christian Borntraeger Cc: Cornelia Huck Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Thomas Gleixner Cc: Kate Stewart Cc: Philippe Ombredanne Signed-off-by: Greg Kroah-Hartman Message-Id: <20171124140043.10062-3-gregkh@linuxfoundation.org>Acked-by: Cornelia Huck Signed-off-by: Christian Borntraeger List of files: /linux-6.15/arch/s390/kvm/Makefile

b7c92f1a - s390/sthyi: reorganize sthyi implementation

Fri, 29 Sep 2017 10:41:50 +0000

s390/sthyi: reorganize sthyi implementationAs we need to support sthyi instruction on LPAR too, move the common codeto kernel part and kvm related code to intercept.c for better reuse.Signed-off-by: QingFeng Hao Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/arch/s390/kvm/Makefile

a3508fbe - KVM: s390: vsie: initial support for nested virtualization

Wed, 08 Jul 2015 11:19:48 +0000

KVM: s390: vsie: initial support for nested virtualizationThis patch adds basic support for nested virtualization on s390x, calledVSIE (virtual SIE) and allows it to be used by the guest if the necessaryfacilities are supported by the hardware and enabled for the guest.In order to make this work, we have to shadow the sie control blockprovided by guest 2. In order to gain some performance, we have toreuse the same shadow blocks as good as possible. For now, we allowas many shadow blocks as we have VCPUs (that way, every VCPU can run theVSIE concurrently).We have to watch out for the prefix getting unmapped out of our shadowgmap and properly get the VCPU out of VSIE in that case, to fault theprefix pages back in. We use the PROG_REQUEST bit for that purpose.This patch is based on an initial prototype by Tobias Elpelt.Acked-by: Christian Borntraeger Signed-off-by: David Hildenbrand Signed-off-by: Christian Borntraeger List of files: /linux-6.15/arch/s390/kvm/Makefile

95ca2cb5 - KVM: s390: Add sthyi emulation

Mon, 23 May 2016 13:11:58 +0000

KVM: s390: Add sthyi emulationStore Hypervisor Information is an emulated z/VM instruction thatprovides a guest with basic information about the layers it is runningon. This includes information about the cpu configuration of both themachine and the lpar, as well as their names, machine model andmachine type. This information enables an application to determine themaximum capacity of CPs and IFLs available to software.The instruction is available whenever the facility bit 74 is set,otherwise executing it results in an operation exception.It is important to check the validity flags in the sections beforeusing data from any structure member. It is not guaranteed that allmembers will be valid on all machines / machine configurations.Signed-off-by: Janosch Frank Reviewed-by: David Hildenbrand Signed-off-by: Christian Borntraeger List of files: /linux-6.15/arch/s390/kvm/Makefile

14b0b4ac - KVM: s390: Enable the KVM-VFIO device

Wed, 20 Jan 2016 05:33:42 +0000

KVM: s390: Enable the KVM-VFIO deviceThe KVM-VFIO device is used by the QEMU VFIO device. It is used torecord the list of in-use VFIO groups so that KVM can manipulatethem.While we don't need this on s390 currently, let's try to be likeeveryone else.Signed-off-by: Dong Jia Shi Acked-by: Cornelia Huck Signed-off-by: Christian Borntraeger List of files: /linux-6.15/arch/s390/kvm/Makefile

27291e21 - KVM: s390: hardware support for guest debugging

Thu, 23 Jan 2014 11:26:52 +0000

KVM: s390: hardware support for guest debuggingThis patch adds support to debug the guest using the PER facility on s390.Single-stepping, hardware breakpoints and hardware watchpoints are supported. Inorder to use the PER facility of the guest without it noticing it, the controlregisters of the guest have to be patched and access to them has to beintercepted(stctl, stctg, lctl, lctlg).All PER program interrupts have to be intercepted and only the relevant PERinterrupts for the guest have to be given back. Special care has to be takenabout repeated exits on the same hardware breakpoint. The intervention of thehost in the guests PER configuration is not fully transparent. PER instructionnullification can not be used by the guest and too many storage alterationevents may be reported to the guest (if it is activated for special addressranges only) when the host concurrently debugging it.Signed-off-by: David Hildenbrand Signed-off-by: Christian Borntraeger List of files: /linux-6.15/arch/s390/kvm/Makefile

22938978 - KVM: s390: add architecture compliant guest access functions

Wed, 01 Jan 2014 15:26:52 +0000

KVM: s390: add architecture compliant guest access functionsThe new guest memory access function write_guest() and read_guest() can beused to access guest memory in an architecture compliant way.These functions will look at the vcpu's PSW and select the correct addressspace for memory access and also perform correct address wrap around.In case DAT is turned on, page tables will be walked otherwise access willhappen to real or absolute memory.Any access exception will be recognized and exception data will be storedin the vcpu's kvm_vcpu_arch.pgm member. Subsequently an exception can beinjected if necessary.Missing are:- key protection checks- access register mode support- program event recording supportThis patch also adds write_guest_real(), read_guest_real(),write_guest_absolute() and read_guest_absolute() guest functions which canbe used to access real and absolute storage. These functions currently donot perform any access checks, since there is no use case (yet?).Signed-off-by: Heiko Carstens Reviewed-by: Thomas Huth Signed-off-by: Christian Borntraeger List of files: /linux-6.15/arch/s390/kvm/Makefile

84223598 - KVM: s390: irq routing for adapter interrupts.

Mon, 15 Jul 2013 11:36:01 +0000

KVM: s390: irq routing for adapter interrupts.Introduce a new interrupt class for s390 adapter interrupts and enableirqfds for s390.This is depending on a new s390 specific vm capability, KVM_CAP_S390_IRQCHIP,that needs to be enabled by userspace.Acked-by: Christian Borntraeger Signed-off-by: Cornelia Huck List of files: /linux-6.15/arch/s390/kvm/Makefile

3c038e6b - KVM: async_pf: Async page fault support on s390

Mon, 07 Oct 2013 15:11:48 +0000

KVM: async_pf: Async page fault support on s390This patch enables async page faults for s390 kvm guests.It provides the userspace API to enable and disable_wait this feature.The disable_wait will enforce that the feature is off by waiting on it.Also it includes the diagnose code, called by the guest to enable async page faults.The async page faults will use an already existing guest interface for thispurpose, as described in "CP Programming Services (SC24-6084)".Signed-off-by: Dominik Dingel Signed-off-by: Christian Borntraeger List of files: /linux-6.15/arch/s390/kvm/Makefile

535cf7b3 - KVM: get rid of $(addprefix ../../../virt/kvm/, ...) in Makefiles

Tue, 14 May 2013 13:31:02 +0000

KVM: get rid of $(addprefix ../../../virt/kvm/, ...) in MakefilesAs requested by the KVM maintainers, remove the addprefix used torefer to the main KVM code from the arch code, and replace it witha KVM variable that does the same thing.Tested-by: Christian Borntraeger Cc: Paolo Bonzini Cc: Gleb Natapov Cc: Christoffer Dall Acked-by: Xiantao Zhang Cc: Tony Luck Cc: Fenghua Yu Cc: Alexander Graf Cc: Benjamin Herrenschmidt Cc: Christian Borntraeger Cc: Cornelia Huck Signed-off-by: Marc Zyngier Signed-off-by: Gleb Natapov List of files: /linux-6.15/arch/s390/kvm/Makefile

10ccaa1e - KVM: s390: Wire up ioeventfd.

Thu, 28 Feb 2013 11:33:21 +0000

KVM: s390: Wire up ioeventfd.Enable ioeventfd support on s390 and hook up diagnose 500 virtio-ccwnotifications.Signed-off-by: Cornelia Huck Signed-off-by: Marcelo Tosatti List of files: /linux-6.15/arch/s390/kvm/Makefile

603d1a50 - [S390] move sie code to entry.S

Sun, 24 Jul 2011 08:48:18 +0000

[S390] move sie code to entry.SThe entry to / exit from sie has subtle dependencies to the first levelinterrupt handler. Move the sie assembler code to entry64.S and replacethe SIE_HOOK callback with a test and the new _TIF_SIE bit.In addition this patch fixes several problems in regard to the check forthe_TIF_EXIT_SIE bits. The old code checked the TIF bits before executingthe interrupt handler and it only modified the instruction address if itpointed directly to the sie instruction. In both cases it could missa TIF bit that normally would cause an exit from the guest and wouldreenter the guest context.Signed-off-by: Martin Schwidefsky List of files: /linux-6.15/arch/s390/kvm/Makefile

c73028a0 - s390: change to new flag variable

Fri, 14 Jan 2011 14:12:32 +0000

s390: change to new flag variableReplace EXTRA_CFLAGS with ccflags-y.Signed-off-by: matt mooney Acked-by: WANG Cong Signed-off-by: Michal Marek List of files: /linux-6.15/arch/s390/kvm/Makefile