aboutsummaryrefslogtreecommitdiff
path: root/target-s390x/kvm.c
AgeCommit message (Collapse)Author
2016-09-30Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20160927' into ↵Peter Maydell
staging Couple of s390x patches: - some PCI cleanups - fix build error due to uuid rework - fix potential deadlock in sigp handling - enable ccw devices in BIOS and enforce checking in QEMU # gpg: Signature made Wed 28 Sep 2016 12:27:03 BST # gpg: using RSA key 0x117BBC80B5A61C7C # gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>" # Primary key fingerprint: F922 9381 A334 08F9 DBAB FBCA 117B BC80 B5A6 1C7C * remotes/borntraeger/tags/s390x-20160927: s390x/kvm: fix build against qemu_uuid s390x/css: {c,h,t,r,x}sch: require enable AND device number valid pc-bios/s390-ccw.img: rebuild image pc-bios/s390-ccw: enable subchannel for IPL I/O devices s390x/kvm: Fix potential deadlock in sigp handling s390x/pci: code cleanup s390x/pci: assign msix io region for each pci device s390x/pci: re-arrange variable declarations Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-09-28s390x/kvm: fix build against qemu_uuidChristian Borntraeger
commit 9c5ce8db2e5c ("vl: Switch qemu_uuid to QemuUUID") changed most users of qemu_uuid but not all. Fix a build error on s390/kvm. Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2016-09-28s390x/kvm: Fix potential deadlock in sigp handlingChristian Borntraeger
If two VCPUs exit at the same time and target each other with a sigp, both could run into a deadlock as run_on_cpu on CPU0 will free the BQL when starting the CPU1 target routine. CPU1 will run its sigp initiater for CPU0 before handling the run_on_cpu requests, thus resulting in a dead lock. As all qemu SIGPs are slow path anway we can use a big sigp lock and allow only one SIGP for the guest at a time. We will return condition code 2 (BUSY) on contention to the guest. Reported-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2016-09-27cpus: pass CPUState to run_on_cpu helpersAlex Bennée
CPUState is a fairly common pointer to pass to these helpers. This means if you need other arguments for the async_run_on_cpu case you end up having to do a g_malloc to stuff additional data into the routine. For the current users this isn't a massive deal but for MTTCG this gets cumbersome when the only other parameter is often an address. This adds the typedef run_on_cpu_func for helper functions which has an explicit CPUState * passed as the first parameter. All the users of run_on_cpu and async_run_on_cpu have had their helpers updated to use CPUState where available. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> [Sergey Fedorov: - eliminate more CPUState in user data; - remove unnecessary user data passing; - fix target-s390x/kvm.c and target-s390x/misc_helper.c] Signed-off-by: Sergey Fedorov <sergey.fedorov@linaro.org> Acked-by: David Gibson <david@gibson.dropbear.id.au> (ppc parts) Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> (s390 parts) Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <1470158864-17651-3-git-send-email-alex.bennee@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-09-19s390x/kvm: disable cpu model for the 2.7 machineChristian Borntraeger
cpu model was merged with 2.8, it is wrong to abuse ri_allowed which was enabled with 2.7. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/kvm: don't enable key wrapping if msa3 is disabledDavid Hildenbrand
As the CPU model now controls msa3, trying to set wrapping keys without msa3 being around/enable in the kernel will produce misleading errors. So let's simply not configure key wrapping if msa3 is not enabled and make compat machines with disabled CPU model work correctly. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-25-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/kvm: let the CPU model control CMM(A)David Hildenbrand
Starting with recent kernels, if the cmma attributes are available, we actually have hardware support. Enabling CMMA then means providing the guest VCPU with CMM, therefore enabling its CMM facility. Let's not blindly enable CMM anymore but let's control it using CPU models. For disabled CPU models, CMMA will continue to always get enabled. Also enable it in the applicable default models. Please note that CMM doesn't work with hugetlbfs, therefore we will warn the user and keep it disabled. Migrating from/to a hugetlbfs configuration works, as it will be disabled on both sides. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-24-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/kvm: disable host model for problematic compat machinesDavid Hildenbrand
Compatibility machines that touch runtime-instrumentation should not be used with the CPU model. Otherwise the host model will look different, depending on the QEMU machine QEMU has been started with. So let's simply disable the host model for existing compatibility machines that all disable ri. This, in return, disables the CPU model for these compat machines completely. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-23-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/kvm: implement CPU model supportDavid Hildenbrand
Let's implement our two hooks so we can support CPU models. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-22-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-06s390x/cpumodel: let the CPU model handle feature checksDavid Hildenbrand
If we have certain features enabled, we have to migrate additional state (e.g. vector registers or runtime-instrumentation registers). Let the CPU model control that unless we have no "host" CPU model in the KVM case. This will later on be the case for compatibility machines, so migration from QEMU versions without the CPU model will still work. Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <20160905085244.99980-12-dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-09-05s390x/kvm: 2 byte software breakpoint supportDavid Hildenbrand
Diag 501 (4 bytes) was used until now for software breakpoints on s390. As instructions on s390 might be 2 bytes long, temporarily overwriting them with 4 bytes is evil and can result in very strange guest behaviour. We make use of invalid instruction 0x0000 as new sw breakpoint instruction. We have to enable interception of that instruction in KVM using a capability. If no software breakpoint has been inserted at the reported position, an operation exception has to be injected into the guest. Otherwise a breakpoint has been hit and the pc has to be rewound. If KVM doesn't yet support interception of instruction 0x0000 the existing mechanism exploiting diag 501 is used. To keep overhead low, interception of instruction 0x0000 will only be enabled if sw breakpoints are really used. Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-07-21kvm-irqchip: i386: add hook for add/remove virqPeter Xu
Adding two hooks to be notified when adding/removing msi routes. There are two kinds of MSI routes: - in kvm_irqchip_add_irq_route(): before assigning IRQFD. Used by vhost, vfio, etc. - in kvm_irqchip_send_msi(): when sending direct MSI message, if direct MSI not allowed, we will first create one MSI route entry in the kernel, then trigger it. This patch only hooks the first one (irqfd case). We do not need to take care for the 2nd one, since it's only used by QEMU userspace (kvm-apic) and the messages will always do in-time translation when triggered. While we need to note them down for the 1st one, so that we can notify the kernel when cache invalidation happens. Also, we do not hook IOAPIC msi routes (we have explicit notifier for IOAPIC to keep its cache updated). We only need to care about irqfd users. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2016-07-11s390x/pci: replace fid with idx in msg data of msixYi Min Zhao
Present code uses fid as the part of message data of msix for looking up the specific zpci device. However it limits the usable range of fid, and the code looking up the zpci device may fail due to truncation of the fid. In addition, fh is composed of enabled bit, FH_VIRT and the array index. So we can use the array index as the identifier to store in msg data. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-06-16os-posix: include sys/mman.hPaolo Bonzini
qemu/osdep.h checks whether MAP_ANONYMOUS is defined, but this check is bogus without a previous inclusion of sys/mman.h. Include it in sysemu/os-posix.h and remove it from everywhere else. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-06-14s390x/kvm: Fixup interrupt type for non-adapter I/O interruptsChristian Borntraeger
The current algorithm for I/O interrupts would result in a wrong interrupt type for subchannel numbers fffe and ffff. In addition a non adapter interrupt might look like an adapter interrupt for any subchannel number that has the 0x0400 bit set. No kernel has ever used the type outside logging - and the logging was wrong all the time. For everything else the kernel used the interrupt parameters. Let's use the KVM_S390_INT_IO macro as for adapter interrupts. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-05-19qemu-common: push cpu.h inclusion out of qemu-common.hPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-05-17s390x: enable runtime instrumentationFan Zhang
Introduce run-time-instrumentation support when running under kvm for virtio-ccw 2.7 machine and make sure older machines can not enable it. The new ri_allowed field in the s390MachineClass serves as an indicator whether the feature can be used by the machine and should therefore be activated if available. riccb_needed() is used to check whether riccb is needed or not in live migration. Signed-off-by: Fan Zhang <zhangfan@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-03-01s390x: remove {kvm_}s390_virtio_irq()Cornelia Huck
This interface was only used by the old virtio machine and therefore is not needed anymore. Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-03-01s390x/kvm: sync fprs via kvm_runDavid Hildenbrand
We can now also sync the fprs via kvm_run, avoiding one ioctl. Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2016-01-29s390: Clean up includesPeter Maydell
Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Message-id: 1453832250-766-8-git-send-email-peter.maydell@linaro.org
2016-01-22fpu: Replace uint64 typedef with uint64_tPeter Maydell
Replace the uint64 softfloat-specific typedef with uint64_t. This change was made with find include fpu target-* -name '*.[ch]' | xargs sed -i -e 's/\buint64\b/uint64_t/g' together with manual removal of the typedef definition, and manual undoing of some mis-hits where macro arguments were being used for token pasting rather than as a type. Note that the target-mips/kvm.c and target-s390x/kvm.c changes are fixing code that should not have been using the uint64 type in the first place. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Acked-by: Leon Alrae <leon.alrae@imgtec.com> Acked-by: James Hogan <james.hogan@imgtec.com> Message-id: 1452603315-27030-3-git-send-email-peter.maydell@linaro.org
2015-11-11s390x/kvm: don't enable CMMA when hugetlbfs will be usedDominik Dingel
On hugetlbfs CMMA will not be useful as every ESSA instruction will trap. So don't offer CMMA to guests with a hugepages backing. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-10-21s390x/cmma: clean up cmma resetDavid Hildenbrand
The cmma reset is per VM, so we don't need a cpu object. We can directly make use of kvm_state, as it is already available when the reset is called. By moving the cmma reset in our machine reset function, we can avoid a manual reset handler. Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-10-21s390x: reset crypto only on clear reset and QEMU resetDavid Hildenbrand
Initializing VM crypto in initial cpu reset has multiple problems 1. We call the exact same function #VCPU times, although one time is enough 2. On SIGP initial cpu reset, we exchange the wrapping key while other VCPUs are running. Bad! 3. It is simply wrong. According to the Pop, a reset happens only during a clear reset. So, we have to reset the keys - on modified clear reset - on load clear (QEMU reset - via machine reset) - on qemu start (via machine reset) Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-10-20s390x: flagify mcic valuesCornelia Huck
Instead of using magic values when building the machine check interruption code, add some defines as by chapter 11-14 in the PoP. This should make it easier to catch problems like the missing vector register validity bit ("s390x/kvm: Fix vector validity bit in device machine checks"), and less hassle should we want to generate machine checks beyond the channel reports we currently support. Acked-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-10-20s390x/kvm: Fix vector validity bit in device machine checksChristian Borntraeger
Device hotplugs trigger a crw machine check. All machine checks have validity bits for certain register types. With vector support we also have to claim that vector registers are valid. This is a band-aid suitable for stable. Long term we should create the full mcic value dynamically depending on the active features in the kernel interrupt handler. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: qemu-stable@nongnu.org Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-10-19kvm: Pass PCI device pointer to MSI routing functionsPavel Fedin
In-kernel ITS emulation on ARM64 will require to supply requester IDs. These IDs can now be retrieved from the device pointer using new pci_requester_id() function. This patch adds pci_dev pointer to KVM GSI routing functions and makes callers passing it. x86 architecture does not use requester IDs, but hw/i386/kvm/pci-assign.c also made passing PCI device pointer instead of NULL for consistency with the rest of the code. Signed-off-by: Pavel Fedin <p.fedin@samsung.com> Message-Id: <ce081423ba2394a4efc30f30708fca07656bc500.1444916432.git.p.fedin@samsung.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-09-14Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* Support for jemalloc * qemu_mutex_lock_iothread "No such process" fix * cutils: qemu_strto* wrappers * iohandler.c simplification * Many other fixes and misc patches. And some MTTCG work (with Emilio's fixes squashed): * Signal-free TCG kick * Removing spinlock in favor of QemuMutex * User-mode emulation multi-threading fixes/docs # gpg: Signature made Thu 10 Sep 2015 09:03:07 BST using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" * remotes/bonzini/tags/for-upstream: (44 commits) cutils: work around platform differences in strto{l,ul,ll,ull} cpu-exec: fix lock hierarchy for user-mode emulation exec: make mmap_lock/mmap_unlock globally available tcg: comment on which functions have to be called with mmap_lock held tcg: add memory barriers in page_find_alloc accesses remove unused spinlock. replace spinlock by QemuMutex. cpus: remove tcg_halt_cond and tcg_cpu_thread globals cpus: protect work list with work_mutex scripts/dump-guest-memory.py: fix after RAMBlock change configure: Add support for jemalloc add macro file for coccinelle configure: factor out adding disas configure vhost-scsi: fix wrong vhost-scsi firmware path checkpatch: remove tests that are not relevant outside the kernel checkpatch: adapt some tests to QEMU CODING_STYLE: update mixed declaration rules qmp: Add example usage of strto*l() qemu wrapper cutils: Add qemu_strtoull() wrapper cutils: Add qemu_strtoll() wrapper ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-09-11typofixes - v4Veres Lajos
Signed-off-by: Veres Lajos <vlajos@gmail.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-09-07Added generic panic handler qemu_system_guest_panicked()Andrey Smetanin
There are pieces of guest panic handling code that can be shared in one generic function. These code replaced by call qemu_system_guest_panicked(). Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com> Signed-off-by: Denis V. Lunev <den@openvz.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: Andreas Färber <afaerber@suse.de> Message-Id: <1435924905-8926-10-git-send-email-den@openvz.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-07-01kvm: First step to push iothread lock out of inner run loopJan Kiszka
This opens the path to get rid of the iothread lock on vmexits in KVM mode. On x86, the in-kernel irqchips has to be used because we otherwise need to synchronize APIC and other per-cpu state accesses that could be changed concurrently. Regarding pre/post-run callbacks, s390x and ARM should be fine without specific locking as the callbacks are empty. MIPS and POWER require locking for the pre-run callback. For the handle_exit callback, it is non-empty in x86, POWER and s390. Some POWER cases could do without the locking, but it is left in place for now. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1434646046-27150-7-git-send-email-pbonzini@redhat.com>
2015-06-22Include monitor/monitor.h exactly where neededMarkus Armbruster
In particular, don't include it into headers. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-22qerror: Move #include out of qerror.hMarkus Armbruster
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-06-11s390x/kvm: diag288 instruction interception and handlingXu Wang
Intercept the diag288 requests from kvm guests, and hand the requested command to the diag288 watchdog device for further handling. Signed-off-by: Xu Wang <gesaint@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-06-09Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20150609' into ↵Peter Maydell
staging s390x/virtio-ccw: migration and virtio for 2.4 1. Migration fixups 2. virtio 9pfs # gpg: Signature made Tue Jun 9 09:00:05 2015 BST using RSA key ID B5A61C7C # gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>" * remotes/borntraeger/tags/s390x-20150609: s390x/migration: add comment about floating point migration s390x/kvm: always ignore empty vcpu interrupt state virtio-ccw/migration: Migrate config vector for virtio devices virtio-ccw: add support for 9pfs Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-06-03s390x/kvm: always ignore empty vcpu interrupt stateSascha Silbe
kvm_s390_vcpu_interrupt_pre_save() and kvm_s390_vcpu_interrupt_post_load() are essentially no-ops on hosts without KVM_CAP_S390_IRQ_STATE. Move the capability check after the check for saved IRQ state in kvm_s390_vcpu_interrupt_post_load() so that migration between hosts without KVM_CAP_S390_IRQ_STATE (including save / restore on the same host) continues to work. Fixes: 3cda44f7bae5 ("s390x/kvm: migrate vcpu interrupt state") Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-06-02kvm: introduce kvm_arch_msi_data_to_gsiEric Auger
On ARM the MSI data corresponds to the shared peripheral interrupt (SPI) ID. This latter equals to the SPI index + 32. to retrieve the SPI index, matching the gsi, an architecture specific function is introduced. Signed-off-by: Eric Auger <eric.auger@linaro.org> Acked-by: Christoffer Dall <christoffer.dall@linaro.org> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-05-27s390x: Enable vector processing capabilityEric Farman
Everything is finally in place, inform the kernel that user space supports vector registers. Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-27s390x: Store Additional Status SIGP orderEric Farman
Add handling for the Store Additional Status at Address order that exists for the Signal Processor (SIGP) instruction. Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-27s390x: Vector Register IOCTLsEric Farman
Handle the actual syncing of the vector registers with kernel space, via the get/put register IOCTLs. The vector registers that were introduced with the z13 overlay the existing floating point registers. FP registers 0-15 are the high-halves of vector registers 0-15. Thus, remove the freg fields and replace them with the equivalent vector field to avoid errors in duplication. Moreover, synchronize either the vector registers via kvm_sync_regs, or floating point registers via the GET/SET FPU IOCTLs. Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-27s390x: Common access to floating point registersEric Farman
Provide a routine to access the correct floating point register, to simplify future expansion. Suggested-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Eric Farman <farman@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-11Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
- build bugfix from Fam and new configure check from Emilio - two improvements to "info mtere" from Gerd - KVM support for memory transaction attributes - one more small step towards unlocked MMIO dispatch - one piece of the qemu-nbd errno fixes - trivial-ish patches from Denis and Thomas # gpg: Signature made Fri May 8 13:47:29 2015 BST using RSA key ID 78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: qemu-nbd: only send a limited number of errno codes on the wire rules.mak: Force CFLAGS for all objects in DSO configure: require __thread support exec: move rcu_read_lock/unlock to address_space_translate callers kvm: add support for memory transaction attributes mtree: also print disabled regions mtree: tag & indent a bit better apic_common: improve readability of apic_reset_common kvm: Silence warning from valgrind Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-05-08s390x/kvm: migrate vcpu interrupt stateJens Freimann
This patch adds support to migrate vcpu interrupts. We use ioctl KVM_S390_GET_IRQ_STATE and _SET_IRQ_STATE to get/set the complete interrupt state for a vcpu. Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-05-08s390x/kvm: use ioctl KVM_S390_IRQ for vcpu interruptsJens Freimann
KVM_S390_INT uses only two parameter fields. This is not enough to pass all required information for certain interrupts. A new ioctl KVM_S390_IRQ is available which allows us to inject all local interrupts as defined in the Principles of Operation. It takes a struct kvm_s390_irq as a parameter which can store interrupt payload data for all interrupts. Let's use the new ioctl for injecting vcpu interrupts. Tested-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-04-30kvm: add support for memory transaction attributesPaolo Bonzini
Let kvm_arch_post_run convert fields in the kvm_run struct to MemTxAttrs. These are then passed to address_space_rw. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-04-30s390x/kvm: Support access register mode for KVM_S390_MEM_OP ioctlAlexander Yarygin
Access register mode is one of the modes that control dynamic address translation. In this mode the address space is specified by values of the access registers. The effective address-space-control element is obtained from the result of the access register translation. See the "Access-Register Introduction" section of the chapter 5 "Program Execution" in "Principles of Operations" for more details. When the CPU is in AR mode, the s390_cpu_virt_mem_rw() function must know which access register number to use for address translation. This patch does several things: - add new parameter 'uint8_t ar' to that function - decode ar number from intercepted instructions - pass the ar number to s390_cpu_virt_mem_rw(), which in turn passes it to the KVM_S390_MEM_OP ioctl. Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-04-30s390x/mmu: Use ioctl for reading and writing from/to guest memoryThomas Huth
Add code to make use of the new ioctl for reading from / writing to virtual guest memory. By using the ioctl, the memory accesses are now protected with the so-called ipte-lock in the kernel. [CH: moved error message into kvm_s390_mem_op()] Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-04-30s390x/kvm: Put vm name, extended name and UUID into STSI322 SYSIBEkaterina Tumanova
KVM prefills the SYSIB, returned by STSI 3.2.2. This patch allows userspace to intercept execution, and fill in the values, that are known to qemu: machine name (8 chars), extended machine name (256 chars), extended machine name encoding (equals 2 for UTF-8) and UUID. STSI322 qemu handler also finds a highest virtualization level in level-3 virtualization stack that doesn't support Extended Names (Ext Name delimiter) and propagates zero Ext Name to all levels below, because this level is not capable of managing Extended Names of lower levels. Signed-off-by: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-03-16s390x: CPACF: Handle key wrap machine optionsTony Krowiak
Check for the aes_key_wrap and dea_key_wrap machine options and set the appropriate KVM device attribute(s) to tell the kernel to enable or disable the AES/DEA protected key functions for the guest domain. This patch introduces two new machine options for indicating the state of AES/DEA key wrapping functions. This controls whether the guest will have access to the AES/DEA crypto functions. aes_key_wrap="on | off" is changed to aes-key-wrap="on | off" dea_key_wrap="on | off" is changed to dea-key-wrap="on | off" Check for the aes-key-wrap and dea-key-wrap machine options and set the appropriate KVM device attribute(s) to tell the kernel to enable or disable the AES/DEA protected key functions for the guest domain. Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Tony Krowiak <akrowiak@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Message-Id: <1426164834-38648-4-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-03-16s390x/kvm: make use of generic vm attribute checkDominik Dingel
By using the new introduced generic interface we can remove redundancies and clean up. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Suggested-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Message-Id: <1426164834-38648-3-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-17 02:57:02 +0000