- 22 4月, 2014 3 次提交
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由 Heiko Carstens 提交于
Make test_vfacility() available for other files. This is needed for the new guest access functions, which test if certain facilities are available for a guest. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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由 Jens Freimann 提交于
Add a new data structure and function that allows to inject all kinds of interrupt as defined in the PoP Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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由 Dominik Dingel 提交于
When userspace reset the guest without notifying kvm, the CMMA state of the pages might be unused, resulting in guest data corruption. To avoid this, CMMA must be enabled only if userspace understands the implications. CMMA must be enabled before vCPU creation. It can't be switched off once enabled. All subsequently created vCPUs will be enabled for CMMA according to the CMMA state of the VM. Signed-off-by: NDominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> [remove now unnecessary calls to page_table_reset_pgste]
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- 25 3月, 2014 1 次提交
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由 Jens Freimann 提交于
Empty list of local interrupts when vcpu goes through initial reset to provide a clean state Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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- 21 3月, 2014 1 次提交
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由 Cornelia Huck 提交于
Add a new interface to register/deregister sources of adapter interrupts identified by an unique id via the flic. Adapters may also be maskable and carry a list of pinned pages. These adapters will be used by irq routing later. Acked-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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- 21 2月, 2014 1 次提交
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由 Konstantin Weitz 提交于
This patch enables Collaborative Memory Management (CMM) for kvm on s390. CMM allows the guest to inform the host about page usage (see arch/s390/mm/cmm.c). The host uses this information to avoid swapping in unused pages in the page fault handler. Further, a CPU provided list of unused invalid pages is processed to reclaim swap space of not yet accessed unused pages. [ Martin Schwidefsky: patch reordering and cleanup ] Signed-off-by: NKonstantin Weitz <konstantin.weitz@gmail.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 30 1月, 2014 1 次提交
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由 Dominik Dingel 提交于
This 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 this purpose, as described in "CP Programming Services (SC24-6084)". Signed-off-by: NDominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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- 17 1月, 2014 1 次提交
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由 Michael Mueller 提交于
This patch enables transactional execution for KVM guests on s390 systems zec12 or later. We rework the allocation of the page containing the sie_block to also back the Interception Transaction Diagnostic Block. If available the TE facilities will be enabled. Setting bit 73 and 50 in vfacilities bitmask reveals the HW facilities Transactional Memory and Constraint Transactional Memory respectively to the KVM guest. Furthermore, the patch restores the Program-Interruption TDB from the Interception TDB in case a program interception has occurred and the ITDB has a valid format. Signed-off-by: NMichael Mueller <mimu@linux.vnet.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
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- 28 11月, 2013 4 次提交
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由 Thomas Huth 提交于
The function kvm_s390_inject_sigp_stop() as been unused since the removal of the old mmu reload code and thus can be removed safely. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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由 Thomas Huth 提交于
The SIGP order STOP_AND_STORE_STATUS is defined to stop a CPU and store its status. However, we only stored the status if the CPU was still running, so make sure that the status is now also stored if the CPU was already stopped. This fixes the problem that the CPU information was not stored correctly in kdump files, rendering them unreadable. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Acked-by: NChristian Borntraeger <borntraeger@de.ibm.com> Cc: stable@vger.kernel.org Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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由 Thomas Huth 提交于
VIRTIODESCSPACE is completely unused nowadays and thus can be removed without any problems. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Acked-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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由 Thomas Huth 提交于
The SIE_INTERCEPT_UCONTROL can be removed by moving the related code from kvm_arch_vcpu_ioctl_run() to vcpu_post_run(). Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Acked-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
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- 25 9月, 2013 2 次提交
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由 Thomas Huth 提交于
We're not always interested in both registers that are specified for an RRE instruction. So allow NULL as parameter, too, to indicate that we do not need the corresponding value. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Thomas Huth 提交于
The need for SIE_INTERCEPT_RERUNVCPU has been removed long ago already, with the following commit: f7850c92 [S390] remove kvm mmu reload on s390 Since the remainders are dead code, they are now removed by this patch. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 29 7月, 2013 2 次提交
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由 Thomas Huth 提交于
Introduced a helper function for setting the CC in the guest PSW to improve the readability of the code. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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由 Michael Mueller 提交于
The patch renames the array holding the HW facility bitmaps. This allows to interprete the variable as set of virtual machine specific "virtual" facilities. The basic idea is to make virtual facilities externally managable in future. An availability test for virtual facilites has been added as well. Signed-off-by: NMichael Mueller <mimu@linux.vnet.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 21 6月, 2013 1 次提交
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由 Thomas Huth 提交于
LCTL and LCTLG are also privileged instructions, thus there is no need for treating them separately from the other instructions in priv.c. So this patch moves these two instructions to priv.c, adds a check for supervisor state and simplifies the "handle_eb" instruction decoding by merging the two eb_handlers jump tables from intercept.c and priv.c into one table only. Signed-off-by: NThomas Huth <thuth@linux.vnet.ibm.com> Acked-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 17 6月, 2013 1 次提交
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由 Christian Borntraeger 提交于
This patch enables kvm to give large pages to the guest. The heavy lifting is done by the hardware, the host only has to take care of the PFMF instruction, which is also part of EDAT-1. We also support the non-quiescing key setting facility if the host supports it, to behave similar to the interpretation of sske. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
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- 21 5月, 2013 2 次提交
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由 Christian Borntraeger 提交于
The guest prefix pages must be mapped writeable all the time while SIE is running, otherwise the guest might see random behaviour. (pinned at the pte level) Turns out that mlocking is not enough, the page table entry (not the page) might change or become r/o. This patch uses the gmap notifiers to kick guest cpus out of SIE. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Acked-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NGleb Natapov <gleb@redhat.com>
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由 Christian Borntraeger 提交于
Lets provide functions to prevent KVM from reentering SIE and to kick cpus out of SIE. We cannot use the common kvm_vcpu_kick code, since we need to kick out guests in places that hold architecture specific locks (e.g. pgste lock) which might be necessary on the other cpus - so no waiting possible. So lets provide a bit in a private field of the sie control block that acts as a gate keeper, after we claimed we are in SIE. Please note that we do not reuse prog0c, since we want to access that bit without atomic ops. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Acked-by: NMartin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: NGleb Natapov <gleb@redhat.com>
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- 02 4月, 2013 1 次提交
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由 Heiko Carstens 提交于
kvm_s390_inject_program_int() and friends may fail if no memory is available. This must be reported to the calling functions, so that this gets passed down to user space which should fix the situation. Alternatively we end up with guest state corruption. So fix this and enforce return value checking by adding a __must_check annotation to all of these function prototypes. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com> Acked-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NGleb Natapov <gleb@redhat.com>
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- 30 1月, 2013 1 次提交
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由 Christian Borntraeger 提交于
Instructions with long displacement have a signed displacement. Currently the sign bit is interpreted as 2^20: Lets fix it by doing the sign extension from 20bit to 32bit and then use it as a signed variable in the addition (see kvm_s390_get_base_disp_rsy). Furthermore, there are lots of "int" in that code. This is problematic, because shifting on a signed integer is undefined/implementation defined if the bit value happens to be negative. Fortunately the promotion rules will make the right hand side unsigned anyway, so there is no real problem right now. Let's convert them anyway to unsigned where appropriate to avoid problems if the code is changed or copy/pasted later on. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NGleb Natapov <gleb@redhat.com>
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- 08 1月, 2013 4 次提交
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由 Cornelia Huck 提交于
Add a new capability, KVM_CAP_S390_CSS_SUPPORT, which will pass intercepts for channel I/O instructions to userspace. Only I/O instructions interacting with I/O interrupts need to be handled in-kernel: - TEST PENDING INTERRUPTION (tpi) dequeues and stores pending interrupts entirely in-kernel. - TEST SUBCHANNEL (tsch) dequeues pending interrupts in-kernel and exits via KVM_EXIT_S390_TSCH to userspace for subchannel- related processing. Reviewed-by: NMarcelo Tosatti <mtosatti@redhat.com> Reviewed-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Cornelia Huck 提交于
Explicitely catch all channel I/O related instructions intercepts in the kernel and set condition code 3 for them. This paves the way for properly handling these instructions later on. Note: This is not architecture compliant (the previous code wasn't either) since setting cc 3 is not the correct thing to do for some of these instructions. For Linux guests, however, it still has the intended effect of stopping css probing. Reviewed-by: NMarcelo Tosatti <mtosatti@redhat.com> Reviewed-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Cornelia Huck 提交于
Add support for injecting machine checks (only repressible conditions for now). This is a bit more involved than I/O interrupts, for these reasons: - Machine checks come in both floating and cpu varieties. - We don't have a bit for machine checks enabling, but have to use a roundabout approach with trapping PSW changing instructions and watching for opened machine checks. Reviewed-by: NAlexander Graf <agraf@suse.de> Reviewed-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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由 Cornelia Huck 提交于
Introduce helper functions for decoding the various base/displacement instruction formats. Reviewed-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 20 7月, 2012 1 次提交
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由 Heiko Carstens 提交于
Remove the file name from the comment at top of many files. In most cases the file name was wrong anyway, so it's rather pointless. Also unify the IBM copyright statement. We did have a lot of sightly different statements and wanted to change them one after another whenever a file gets touched. However that never happened. Instead people start to take the old/"wrong" statements to use as a template for new files. So unify all of them in one go. Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
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- 01 5月, 2012 1 次提交
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由 Cornelia Huck 提交于
Handle the mandatory intercept SET CLOCK PROGRAMMABLE FIELD instruction. Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 05 3月, 2012 3 次提交
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由 Christian Borntraeger 提交于
There are several places in the kvm module, which set the prefix register. Since we need to flush the cpu, lets combine this operation into a helper function. This helper will also explicitely mask out the unused bits. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Carsten Otte 提交于
This patch introduces a new exit reason in the kvm_run structure named KVM_EXIT_S390_UCONTROL. This exit indicates, that a virtual cpu has regognized a fault on the host page table. The idea is that userspace can handle this fault by mapping memory at the fault location into the cpu's address space and then continue to run the virtual cpu. Signed-off-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Carsten Otte 提交于
This patch introduces a new config option for user controlled kernel virtual machines. It introduces a parameter to KVM_CREATE_VM that allows to set bits that alter the capabilities of the newly created virtual machine. The parameter is passed to kvm_arch_init_vm for all architectures. The only valid modifier bit for now is KVM_VM_S390_UCONTROL. This requires CAP_SYS_ADMIN privileges and creates a user controlled virtual machine on s390 architectures. Signed-off-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 24 7月, 2011 3 次提交
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由 Carsten Otte 提交于
This patch removes the mmu reload logic for kvm on s390. Via Martin's new gmap interface, we can safely add or remove memory slots while guest CPUs are in-flight. Thus, the mmu reload logic is not needed anymore. Signed-off-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Carsten Otte 提交于
This patch removes kvm-s390 internal assumption of a linear mapping of guest address space to user space. Previously, guest memory was translated to user addresses using a fixed offset (gmsor). The new code uses gmap_fault to resolve guest addresses. Signed-off-by: NCarsten Otte <cotte@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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由 Christian Borntraeger 提交于
When running a kvm guest we can get intercepts for tprot, if the host page table is read-only or not populated. This patch implements the most common case (linux memory detection). This also allows host copy on write for guest memory on newer systems. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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- 01 8月, 2010 1 次提交
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由 Christian Borntraeger 提交于
This patch fixes ERROR: "__kvm_s390_vcpu_store_status" [arch/s390/kvm/kvm.ko] undefined! triggered by commit 3268c56840dcee78c3e928336550f4e1861504c4 (kvm.git) Author: Avi Kivity <avi@redhat.com> Date: Thu May 13 12:21:46 2010 +0300 KVM: s390: Centrally lock arch specific vcpu ioctls Reported-by: NSachin Sant <sachinp@in.ibm.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 17 5月, 2010 1 次提交
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由 Lai Jiangshan 提交于
The RCU/SRCU API have already changed for proving RCU usage. I got the following dmesg when PROVE_RCU=y because we used incorrect API. This patch coverts rcu_deference() to srcu_dereference() or family API. =================================================== [ INFO: suspicious rcu_dereference_check() usage. ] --------------------------------------------------- arch/x86/kvm/mmu.c:3020 invoked rcu_dereference_check() without protection! other info that might help us debug this: rcu_scheduler_active = 1, debug_locks = 0 2 locks held by qemu-system-x86/8550: #0: (&kvm->slots_lock){+.+.+.}, at: [<ffffffffa011a6ac>] kvm_set_memory_region+0x29/0x50 [kvm] #1: (&(&kvm->mmu_lock)->rlock){+.+...}, at: [<ffffffffa012262d>] kvm_arch_commit_memory_region+0xa6/0xe2 [kvm] stack backtrace: Pid: 8550, comm: qemu-system-x86 Not tainted 2.6.34-rc4-tip-01028-g939eab1 #27 Call Trace: [<ffffffff8106c59e>] lockdep_rcu_dereference+0xaa/0xb3 [<ffffffffa012f6c1>] kvm_mmu_calculate_mmu_pages+0x44/0x7d [kvm] [<ffffffffa012263e>] kvm_arch_commit_memory_region+0xb7/0xe2 [kvm] [<ffffffffa011a5d7>] __kvm_set_memory_region+0x636/0x6e2 [kvm] [<ffffffffa011a6ba>] kvm_set_memory_region+0x37/0x50 [kvm] [<ffffffffa015e956>] vmx_set_tss_addr+0x46/0x5a [kvm_intel] [<ffffffffa0126592>] kvm_arch_vm_ioctl+0x17a/0xcf8 [kvm] [<ffffffff810a8692>] ? unlock_page+0x27/0x2c [<ffffffff810bf879>] ? __do_fault+0x3a9/0x3e1 [<ffffffffa011b12f>] kvm_vm_ioctl+0x364/0x38d [kvm] [<ffffffff81060cfa>] ? up_read+0x23/0x3d [<ffffffff810f3587>] vfs_ioctl+0x32/0xa6 [<ffffffff810f3b19>] do_vfs_ioctl+0x495/0x4db [<ffffffff810e6b2f>] ? fget_light+0xc2/0x241 [<ffffffff810e416c>] ? do_sys_open+0x104/0x116 [<ffffffff81382d6d>] ? retint_swapgs+0xe/0x13 [<ffffffff810f3ba6>] sys_ioctl+0x47/0x6a [<ffffffff810021db>] system_call_fastpath+0x16/0x1b Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 01 3月, 2010 1 次提交
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由 Marcelo Tosatti 提交于
Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com>
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- 04 10月, 2009 1 次提交
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由 Christian Borntraeger 提交于
commit 628eb9b8 KVM: s390: streamline memslot handling introduced kvm_s390_vcpu_get_memsize. This broke guests >=4G, since this function returned an int. This patch changes the return value to a long. Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 10 9月, 2009 2 次提交
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由 Christian Ehrhardt 提交于
This patch relocates the variables kvm-s390 uses to track guest mem addr/size. As discussed dropping the variables at struct kvm_arch level allows to use the common vcpu->request based mechanism to reload guest memory if e.g. changes via set_memory_region. The kick mechanism introduced in this series is used to ensure running vcpus leave guest state to catch the update. Signed-off-by: NChristian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Christian Ehrhardt 提交于
To ensure vcpu's come out of guest context in certain cases this patch adds a s390 specific way to kick them out of guest context. Currently it kicks them out to rerun the vcpu_run path in the s390 code, but the mechanism itself is expandable and with a new flag we could also add e.g. kicks to userspace etc. Signed-off-by: NChristian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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