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2019-05-28KVM: s390: Do not report unusabled IDs via KVM_CAP_MAX_VCPU_IDThomas Huth1-0/+1
KVM_CAP_MAX_VCPU_ID is currently always reporting KVM_MAX_VCPU_ID on all architectures. However, on s390x, the amount of usable CPUs is determined during runtime - it is depending on the features of the machine the code is running on. Since we are using the vcpu_id as an index into the SCA structures that are defined by the hardware (see e.g. the sca_add_vcpu() function), it is not only the amount of CPUs that is limited by the hard- ware, but also the range of IDs that we can use. Thus KVM_CAP_MAX_VCPU_ID must be determined during runtime on s390x, too. So the handling of KVM_CAP_MAX_VCPU_ID has to be moved from the common code into the architecture specific code, and on s390x we have to return the same value here as for KVM_CAP_MAX_VCPUS. This problem has been discovered with the kvm_create_max_vcpus selftest. With this change applied, the selftest now passes on s390x, too. Reviewed-by: Andrew Jones <drjones@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20190523164309.13345-9-thuth@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-05-24KVM: s390: fix memory slot handling for KVM_SET_USER_MEMORY_REGIONChristian Borntraeger1-14/+21
kselftests exposed a problem in the s390 handling for memory slots. Right now we only do proper memory slot handling for creation of new memory slots. Neither MOVE, nor DELETION are handled properly. Let us implement those. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-05-20KVM: s390: fix typo in parameter descriptionWei Yongjun1-1/+1
Fix typo in parameter description. Fixes: 8b905d28ee17 ("KVM: s390: provide kvm_arch_no_poll function") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Message-Id: <20190504065145.53665-1-weiyongjun1@huawei.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-05-17Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds4-10/+135
Pull KVM updates from Paolo Bonzini: "ARM: - support for SVE and Pointer Authentication in guests - PMU improvements POWER: - support for direct access to the POWER9 XIVE interrupt controller - memory and performance optimizations x86: - support for accessing memory not backed by struct page - fixes and refactoring Generic: - dirty page tracking improvements" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (155 commits) kvm: fix compilation on aarch64 Revert "KVM: nVMX: Expose RDPMC-exiting only when guest supports PMU" kvm: x86: Fix L1TF mitigation for shadow MMU KVM: nVMX: Disable intercept for FS/GS base MSRs in vmcs02 when possible KVM: PPC: Book3S: Remove useless checks in 'release' method of KVM device KVM: PPC: Book3S HV: XIVE: Fix spelling mistake "acessing" -> "accessing" KVM: PPC: Book3S HV: Make sure to load LPID for radix VCPUs kvm: nVMX: Set nested_run_pending in vmx_set_nested_state after checks complete tests: kvm: Add tests for KVM_SET_NESTED_STATE KVM: nVMX: KVM_SET_NESTED_STATE - Tear down old EVMCS state before setting new state tests: kvm: Add tests for KVM_CAP_MAX_VCPUS and KVM_CAP_MAX_CPU_ID tests: kvm: Add tests to .gitignore KVM: Introduce KVM_CAP_MANUAL_DIRTY_LOG_PROTECT2 KVM: Fix kvm_clear_dirty_log_protect off-by-(minus-)one KVM: Fix the bitmap range to copy during clear dirty KVM: arm64: Fix ptrauth ID register masking logic KVM: x86: use direct accessors for RIP and RSP KVM: VMX: Use accessors for GPRs outside of dedicated caching logic KVM: x86: Omit caching logic for always-available GPRs kvm, x86: Properly check whether a pfn is an MMIO or not ...
2019-05-14mm/gup: change GUP fast to use flags rather than a write 'bool'Ira Weiny1-1/+1
To facilitate additional options to get_user_pages_fast() change the singular write parameter to be gup_flags. This patch does not change any functionality. New functionality will follow in subsequent patches. Some of the get_user_pages_fast() call sites were unchanged because they already passed FOLL_WRITE or 0 for the write parameter. NOTE: It was suggested to change the ordering of the get_user_pages_fast() arguments to ensure that callers were converted. This breaks the current GUP call site convention of having the returned pages be the final parameter. So the suggestion was rejected. Link: http://lkml.kernel.org/r/20190328084422.29911-4-ira.weiny@intel.com Link: http://lkml.kernel.org/r/20190317183438.2057-4-ira.weiny@intel.com Signed-off-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Mike Marshall <hubcap@omnibond.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Hogan <jhogan@kernel.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Rich Felker <dalias@libc.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-05-07Merge tag 'pidfd-v5.2-rc1' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull pidfd updates from Christian Brauner: "This patchset makes it possible to retrieve pidfds at process creation time by introducing the new flag CLONE_PIDFD to the clone() system call. Linus originally suggested to implement this as a new flag to clone() instead of making it a separate system call. After a thorough review from Oleg CLONE_PIDFD returns pidfds in the parent_tidptr argument. This means we can give back the associated pid and the pidfd at the same time. Access to process metadata information thus becomes rather trivial. As has been agreed, CLONE_PIDFD creates file descriptors based on anonymous inodes similar to the new mount api. They are made unconditional by this patchset as they are now needed by core kernel code (vfs, pidfd) even more than they already were before (timerfd, signalfd, io_uring, epoll etc.). The core patchset is rather small. The bulky looking changelist is caused by David's very simple changes to Kconfig to make anon inodes unconditional. A pidfd comes with additional information in fdinfo if the kernel supports procfs. The fdinfo file contains the pid of the process in the callers pid namespace in the same format as the procfs status file, i.e. "Pid:\t%d". To remove worries about missing metadata access this patchset comes with a sample/test program that illustrates how a combination of CLONE_PIDFD and pidfd_send_signal() can be used to gain race-free access to process metadata through /proc/<pid>. Further work based on this patchset has been done by Joel. His work makes pidfds pollable. It finished too late for this merge window. I would prefer to have it sitting in linux-next for a while and send it for inclusion during the 5.3 merge window" * tag 'pidfd-v5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: samples: show race-free pidfd metadata access signal: support CLONE_PIDFD with pidfd_send_signal clone: add CLONE_PIDFD Make anon_inodes unconditional
2019-04-30Merge tag 'kvm-s390-next-5.2-1' of ↵Paolo Bonzini4-7/+135
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD KVM: s390: Features and fixes for 5.2 - VSIE crypto fixes - new guest features for gen15 - disable halt polling for nested virtualization with overcommit
2019-04-29s390/airq: recognize directed interruptsSebastian Ott1-1/+1
Add an extra parameter for airq handlers to recognize floating vs. directed interrupts. Signed-off-by: Sebastian Ott <sebott@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2019-04-29KVM: s390: vsie: Return correct values for Invalid CRYCB formatPierre Morel1-1/+1
Let's use the correct validity number. Fixes: 56019f9aca22 ("KVM: s390: vsie: Allow CRYCB FORMAT-2") Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-Id: <1556269201-22918-1-git-send-email-pmorel@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-04-29KVM: s390: vsie: Do not shadow CRYCB when no AP and no keysPierre Morel1-2/+4
When the guest do not have AP instructions nor Key management we should return without shadowing the CRYCB. We did not check correctly in the past. Fixes: b10bd9a256ae ("s390: vsie: Use effective CRYCBD.31 to check CRYCBD validity") Fixes: 6ee74098201b ("KVM: s390: vsie: allow CRYCB FORMAT-0") Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-Id: <1556269010-22258-1-git-send-email-pmorel@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-04-26KVM: s390: provide kvm_arch_no_poll functionChristian Borntraeger2-0/+18
We do track the current steal time of the host CPUs. Let us use this value to disable halt polling if the steal time goes beyond a configured value. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-04-25KVM: s390: enable MSA9 keywrapping functions depending on cpu modelChristian Borntraeger2-2/+30
Instead of adding a new machine option to disable/enable the keywrapping options of pckmo (like for AES and DEA) we can now use the CPU model to decide. As ECC is also wrapped with the AES key we need that to be enabled. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com>
2019-04-25KVM: s390: add deflate conversion facilty to cpu modelChristian Borntraeger1-0/+19
This enables stfle.151 and adds the subfunctions for DFLTCC. Bit 151 is added to the list of facilities that will be enabled when there is no cpu model involved as DFLTCC requires no additional handling from userspace, e.g. for migration. Please note that a cpu model enabled user space can and will have the final decision on the facility bits for a guests. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com>
2019-04-19Make anon_inodes unconditionalDavid Howells1-1/+0
Make the anon_inodes facility unconditional so that it can be used by core VFS code and pidfd code. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> [christian@brauner.io: adapt commit message to mention pidfds] Signed-off-by: Christian Brauner <christian@brauner.io>
2019-04-18KVM: s390: add enhanced sort facilty to cpu modelChristian Borntraeger1-0/+20
This enables stfle.150 and adds the subfunctions for SORTL. Bit 150 is added to the list of facilities that will be enabled when there is no cpu model involved as sortl requires no additional handling from userspace, e.g. for migration. Please note that a cpu model enabled user space can and will have the final decision on the facility bits for a guests. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com>
2019-04-18KVM: s390: provide query function for instructions returning 32 byteChristian Borntraeger1-0/+13
Some of the new features have a 32byte response for the query function. Provide a new wrapper similar to __cpacf_query. We might want to factor this out if other users come up, as of today there is none. So let us keep the function within KVM. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com>
2019-04-18KVM: s390: add MSA9 to cpumodelChristian Borntraeger1-0/+13
This enables stfle.155 and adds the subfunctions for KDSA. Bit 155 is added to the list of facilities that will be enabled when there is no cpu model involved as MSA9 requires no additional handling from userspace, e.g. for migration. Please note that a cpu model enabled user space can and will have the final decision on the facility bits for a guests. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com>
2019-04-18KVM: s390: add vector BCD enhancements facility to cpumodelChristian Borntraeger1-0/+4
If vector support is enabled, the vector BCD enhancements facility might also be enabled. We can directly forward this facility to the guest if available and VX is requested by user space. Please note that user space can and will have the final decision on the facility bits for a guests. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com>
2019-04-18KVM: s390: add vector enhancements facility 2 to cpumodelChristian Borntraeger1-0/+4
If vector support is enabled, the vector enhancements facility 2 might also be enabled. We can directly forward this facility to the guest if available and VX is requested by user space. Please note that user space can and will have the final decision on the facility bits for a guests. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com>
2019-04-18KVM: s390: Fix potential spectre warningsEric Farman1-2/+9
Fix some warnings from smatch: arch/s390/kvm/interrupt.c:2310 get_io_adapter() warn: potential spectre issue 'kvm->arch.adapters' [r] (local cap) arch/s390/kvm/interrupt.c:2341 register_io_adapter() warn: potential spectre issue 'dev->kvm->arch.adapters' [w] Signed-off-by: Eric Farman <farman@linux.ibm.com> Message-Id: <20190417005414.47801-1-farman@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-04-16kvm: move KVM_CAP_NR_MEMSLOTS to common codePaolo Bonzini1-3/+0
All architectures except MIPS were defining it in the same way, and memory slots are handled entirely by common code so there is no point in keeping the definition per-architecture. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-03-15Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds3-59/+566
Pull KVM updates from Paolo Bonzini: "ARM: - some cleanups - direct physical timer assignment - cache sanitization for 32-bit guests s390: - interrupt cleanup - introduction of the Guest Information Block - preparation for processor subfunctions in cpu models PPC: - bug fixes and improvements, especially related to machine checks and protection keys x86: - many, many cleanups, including removing a bunch of MMU code for unnecessary optimizations - AVIC fixes Generic: - memcg accounting" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (147 commits) kvm: vmx: fix formatting of a comment KVM: doc: Document the life cycle of a VM and its resources MAINTAINERS: Add KVM selftests to existing KVM entry Revert "KVM/MMU: Flush tlb directly in the kvm_zap_gfn_range()" KVM: PPC: Book3S: Add count cache flush parameters to kvmppc_get_cpu_char() KVM: PPC: Fix compilation when KVM is not enabled KVM: Minor cleanups for kvm_main.c KVM: s390: add debug logging for cpu model subfunctions KVM: s390: implement subfunction processor calls arm64: KVM: Fix architecturally invalid reset value for FPEXC32_EL2 KVM: arm/arm64: Remove unused timer variable KVM: PPC: Book3S: Improve KVM reference counting KVM: PPC: Book3S HV: Fix build failure without IOMMU support Revert "KVM: Eliminate extra function calls in kvm_get_dirty_log_protect()" x86: kvmguest: use TSC clocksource if invariant TSC is exposed KVM: Never start grow vCPU halt_poll_ns from value below halt_poll_ns_grow_start KVM: Expose the initial start value in grow_halt_poll_ns() as a module parameter KVM: grow_halt_poll_ns() should never shrink vCPU halt_poll_ns KVM: x86/mmu: Consolidate kvm_mmu_zap_all() and kvm_mmu_zap_mmio_sptes() KVM: x86/mmu: WARN if zapping a MMIO spte results in zapping children ...
2019-02-22KVM: s390: add debug logging for cpu model subfunctionsChristian Borntraeger1-0/+136
As userspace can now get/set the subfunctions we want to trace those. This will allow to also check QEMUs cpu model vs. what the real hardware provides. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Janosch Frank <frankja@linux.vnet.ibm.com>
2019-02-22KVM: s390: implement subfunction processor callsChristian Borntraeger1-13/+22
While we will not implement interception for query functions yet, we can and should disable functions that have a control bit based on the given CPU model. Let us start with enabling the subfunction interface. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Janosch Frank <frankja@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com>
2019-02-11s390: vsie: Use effective CRYCBD.31 to check CRYCBD validityPierre Morel1-1/+1
When facility.76 MSAX3 is present for the guest we must issue a validity interception if the CRYCBD is not valid. The bit CRYCBD.31 is an effective field and tested at each guest level and has for effect to mask the facility.76 It follows that if CRYCBD.31 is clear and AP is not in use we do not have to test the CRYCBD validatity even if facility.76 is present in the host. Fixes: 6ee74098201b ("KVM: s390: vsie: allow CRYCB FORMAT-0") Cc: stable@vger.kernel.org Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Reported-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-Id: <1549876849-32680-1-git-send-email-pmorel@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: fix possible null pointer dereference in pending_irqs()Michael Mueller1-3/+7
Assure a GISA is in use before accessing the IPM to avoid a null pointer dereference issue. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reported-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Message-Id: <20190131085247.13826-16-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: start using the GIBMichael Mueller1-0/+7
By initializing the GIB, it will be used by the kvm host. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20190131085247.13826-15-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: add gib_alert_irq_handler()Michael Mueller2-2/+169
The patch implements a handler for GIB alert interruptions on the host. Its task is to alert guests that interrupts are pending for them. A GIB alert interrupt statistic counter is added as well: $ cat /proc/interrupts CPU0 CPU1 ... GAL: 23 37 [I/O] GIB Alert ... Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Acked-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Message-Id: <20190131085247.13826-14-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: kvm_s390_gisa_clear() now clears the IPM onlyMichael Mueller1-3/+22
Function kvm_s390_gisa_clear() now clears the Interruption Pending Mask of the GISA asap. If the GISA is in the alert list at this time it stays in the list but is removed by process_gib_alert_list(). Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Acked-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Message-Id: <20190131085247.13826-13-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: add functions to (un)register GISC with GISAMichael Mueller1-0/+112
Add the Interruption Alert Mask (IAM) to the architecture specific kvm struct. This mask in the GISA is used to define for which ISC a GIB alert will be issued. The functions kvm_s390_gisc_register() and kvm_s390_gisc_unregister() are used to (un)register a GISC (guest ISC) with a virtual machine and its GISA. Upon successful completion, kvm_s390_gisc_register() returns the ISC to be used for GIB alert interruptions. A negative return code indicates an error during registration. Theses functions will be used by other adapter types like AP and PCI to request pass-through interruption support. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Acked-by: Pierre Morel <pmorel@linux.ibm.com> Acked-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Message-Id: <20190131085247.13826-12-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: add kvm reference to struct sie_page2Michael Mueller1-0/+1
Adding the kvm reference to struct sie_page2 will allow to determine the kvm a given gisa belongs to: container_of(gisa, struct sie_page2, gisa)->kvm This functionality will be required to process a gisa in gib alert interruption context. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20190131085247.13826-11-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: add the GIB and its related life-cyle functionsMichael Mueller3-0/+46
The Guest Information Block (GIB) links the GISA of all guests that have adapter interrupts pending. These interrupts cannot be delivered because all vcpus of these guests are currently in WAIT state or have masked the respective Interruption Sub Class (ISC). If enabled, a GIB alert is issued on the host to schedule these guests to run suitable vcpus to consume the pending interruptions. This mechanism allows to process adapter interrupts for currently not running guests. The GIB is created during host initialization and associated with the Adapter Interruption Facility in case an Adapter Interruption Virtualization Facility is available. The GIB initialization and thus the activation of the related code will be done in an upcoming patch of this series. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Acked-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20190131085247.13826-10-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: introduce struct kvm_s390_gisa_interruptMichael Mueller2-23/+31
Use this struct analog to the kvm interruption structs for kvm emulated floating and local interruptions. GIB handling will add further fields to this structure as required. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20190131085247.13826-8-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: remove kvm_s390_ from gisa static inline functionsMichael Mueller1-14/+13
This will shorten the length of code lines. All GISA related static inline functions are local to interrupt.c. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20190131085247.13826-7-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: use pending_irqs_no_gisa() where appropriateMichael Mueller1-2/+2
Interruption types that are not represented in GISA shall use pending_irqs_no_gisa() to test pending interruptions. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20190131085247.13826-6-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: coding style kvm_s390_gisa_init/clear()Michael Mueller1-10/+10
The change helps to reduce line length and increases code readability. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20190131085247.13826-5-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: move bitmap idle_mask into arch struct top levelMichael Mueller2-7/+6
The vcpu idle_mask state is used by but not specific to the emulated floating interruptions. The state is relevant to gisa related interruptions as well. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Acked-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20190131085247.13826-4-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: make bitmap declaration consistentMichael Mueller1-1/+1
Use a consistent bitmap declaration throughout the code. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20190131085247.13826-3-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: drop obsolete else pathMichael Mueller1-1/+1
The explicit else path specified in set_intercept_indicators_io is not required as the function returns in case the first branch is taken anyway. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Message-Id: <20190131085247.13826-2-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2019-02-05KVM: s390: clarify kvm related kernel messageMichael Mueller1-3/+3
As suggested by our ID dept. here are some kernel message updates. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2018-12-29Merge tag 'kconfig-v4.21' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kconfig updates from Masahiro Yamada: - support -y option for merge_config.sh to avoid downgrading =y to =m - remove S_OTHER symbol type, and touch include/config/*.h files correctly - fix file name and line number in lexer warnings - fix memory leak when EOF is encountered in quotation - resolve all shift/reduce conflicts of the parser - warn no new line at end of file - make 'source' statement more strict to take only string literal - rewrite the lexer and remove the keyword lookup table - convert to SPDX License Identifier - compile C files independently instead of including them from zconf.y - fix various warnings of gconfig - misc cleanups * tag 'kconfig-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (39 commits) kconfig: surround dbg_sym_flags with #ifdef DEBUG to fix gconf warning kconfig: split images.c out of qconf.cc/gconf.c to fix gconf warnings kconfig: add static qualifiers to fix gconf warnings kconfig: split the lexer out of zconf.y kconfig: split some C files out of zconf.y kconfig: convert to SPDX License Identifier kconfig: remove keyword lookup table entirely kconfig: update current_pos in the second lexer kconfig: switch to ASSIGN_VAL state in the second lexer kconfig: stop associating kconf_id with yylval kconfig: refactor end token rules kconfig: stop supporting '.' and '/' in unquoted words treewide: surround Kconfig file paths with double quotes microblaze: surround string default in Kconfig with double quotes kconfig: use T_WORD instead of T_VARIABLE for variables kconfig: use specific tokens instead of T_ASSIGN for assignments kconfig: refactor scanning and parsing "option" properties kconfig: use distinct tokens for type and default properties kconfig: remove redundant token defines kconfig: rename depends_list to comment_option_list ...
2018-12-22treewide: surround Kconfig file paths with double quotesMasahiro Yamada1-1/+1
The Kconfig lexer supports special characters such as '.' and '/' in the parameter context. In my understanding, the reason is just to support bare file paths in the source statement. I do not see a good reason to complicate Kconfig for the room of ambiguity. The majority of code already surrounds file paths with double quotes, and it makes sense since file paths are constant string literals. Make it treewide consistent now. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Ingo Molnar <mingo@kernel.org>
2018-12-19Merge tag 'kvm-s390-next-4.21-1' of ↵Paolo Bonzini1-7/+17
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD KVM: s390: Fixes for 4.21 Just two small fixes.
2018-12-18KVM: s390: fix kmsg component kvm-s390Michael Mueller1-4/+3
Relocate #define statement for kvm related kernel messages before the include of printk to become effective. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2018-12-18KVM: s390: unregister debug feature on failing arch initMichael Mueller1-3/+14
Make sure the debug feature and its allocated resources get released upon unsuccessful architecture initialization. A related indication of the issue will be reported as kernel message. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Message-Id: <20181130143215.69496-2-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2018-12-14kvm: make KVM_CAP_ENABLE_CAP_VM architecture agnosticPaolo Bonzini1-10/+1
The first such capability to be handled in virt/kvm/ will be manual dirty page reprotection. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-10-13Merge tag 'kvm-s390-next-4.20-2' of ↵Paolo Bonzini1-4/+53
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD KVM: s390/vfio-ap: Fixes and enhancements for vfio-ap - add tracing - fix a locking bug - make local functions and data static
2018-10-08Merge branch 'apv11' of ↵Christian Borntraeger1-4/+53
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kernelorgnext
2018-10-05KVM: s390: Tracing APCB changesPierre Morel1-0/+41
kvm_arch_crypto_set_masks is a new function to centralize the setup the APCB masks inside the CRYCB SIE satellite. To trace APCB mask changes, we add KVM_EVENT() tracing to both kvm_arch_crypto_set_masks and kvm_arch_crypto_clear_masks. Signed-off-by: Pierre Morel <pmorel@linux.ibm.com> Message-Id: <1538728270-10340-2-git-send-email-pmorel@linux.ibm.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2018-10-05KVM: s390: fix locking for crypto setting error pathChristian Borntraeger1-4/+12
We need to unlock the kvm->lock mutex in the error case. Reported-by: smatch Fixes: 37940fb0b6a2c4bf101 ("KVM: s390: device attrs to enable/disable AP interpretation") Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 17:00:37 +0000