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2015-03-16Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20150316' into stagingPeter Maydell2-35/+131
Final batch of s390x enhancements/fixes for 2.3: - handle TOD clock during migration - CPACF key wrap options - limit amount of pci device code we build - ensure big endian accesses for ccws - various fixes and cleanups # gpg: Signature made Mon Mar 16 10:01:44 2015 GMT using RSA key ID C6F02FAF # gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>" # gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>" * remotes/cohuck/tags/s390x-20150316: s390x/config: Do not include full pci.mak s390x/pci: fix length in sei_nt2 event s390x/ipl: remove dead code s390x/virtio-bus: Remove unused function s390_virtio_bus_console() s390x: CPACF: Handle key wrap machine options s390x/kvm: make use of generic vm attribute check kvm: encapsulate HAS_DEVICE for vm attrs virtio-ccw: assure BE accesses s390x/kvm: Guest Migration TOD clock synchronization s390x: Replace unchecked qdev_init() by qdev_init_nofail() Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-03-16s390x: CPACF: Handle key wrap machine optionsTony Krowiak1-0/+51
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 Dingel1-35/+7
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>
2015-03-16s390x/kvm: Guest Migration TOD clock synchronizationJason J. Herne2-0/+73
Synchronizes the guest TOD clock across a migration by sending the guest TOD clock value to the destination system. If the guest TOD clock is not preserved across a migration then the guest's view of time will snap backwards if the destination host clock is behind the source host clock. This will cause the guest to hang immediately upon resuming on the destination system. Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jason J. Herne <jjherne@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Message-Id: <1425912968-54387-1-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2015-03-13tcg: Change translator-side labels to a pointerRichard Henderson1-3/+4
This is improved type checking for the translators -- it's no longer possible to accidentally swap arguments to the branch functions. Note that the code generating backends still manipulate labels as int. With notable exceptions, the scope of the change is just a few lines for each target, so it's not worth building extra machinery to do this change in per-target increments. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Edgar E. Iglesias <edgar.iglesias@gmail.com> Cc: Michael Walle <michael@walle.cc> Cc: Leon Alrae <leon.alrae@imgtec.com> Cc: Anthony Green <green@moxielogic.com> Cc: Jia Liu <proljc@gmail.com> Cc: Alexander Graf <agraf@suse.de> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-03-12Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell1-1/+1
misc fixes and cleanups A bunch of fixes all over the place, some of the bugs fixed are actually regressions. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Wed Mar 11 17:48:30 2015 GMT using RSA key ID D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67 # Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469 * remotes/mst/tags/for_upstream: (25 commits) virtio-scsi: remove empty wrapper for cmd virtio-scsi: clean out duplicate cdb field virtio-scsi: fix cdb/sense size uapi/virtio_scsi: allow overriding CDB/SENSE size virtio-scsi: drop duplicate CDB/SENSE SIZE exec: don't include hw/boards for linux-user acpi: specify format for build_append_namestring MAINTAINERS: drop aliguori@amazon.com tpm: Move memory subregion function into realize function virtio-pci: Convert to realize() pci: Convert pci_nic_init() to Error to avoid qdev_init() machine: query mem-merge machine property machine: query dump-guest-core machine property hw/boards: make it safe to include for linux-user machine: query phandle-start machine property machine: query kvm-shadow-mem machine property kvm: add machine state to kvm_arch_init machine: query kernel-irqchip property machine: allowed/required kernel-irqchip support machine: replace qemu opts with iommu property ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-03-11kvm: add machine state to kvm_arch_initMarcel Apfelbaum1-1/+1
Needed to query machine's properties. Signed-off-by: Marcel Apfelbaum <marcel@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2015-03-11Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20150310' into ↵Peter Maydell6-71/+431
staging s390x/kvm: Features and fixes for 2.3 - an extension to the elf loader to allow relocations - make the ccw bios relocatable. This allows for bigger ramdisks or smaller guests - Handle all slow SIGPs in QEMU (instead of kernel) for better compliance and correctness - tell the KVM module the maximum guest size. This allows KVM to reduce the number or page table levels - Several fixes/cleanups # gpg: Signature made Wed Mar 11 10:17:13 2015 GMT using RSA key ID B5A61C7C # gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>" * remotes/borntraeger/tags/s390x-20150310: s390-ccw: rebuild BIOS s390/bios: Make the s390-ccw.img relocatable elf-loader: Provide the possibility to relocate s390 ELF files s390-ccw.img: Reinitialize guessing on reboot s390-ccw.img: Allow bigger ramdisk sizes or offsets s390x/kvm: passing max memory size to accelerator virtio-ccw: Convert to realize() virtio-s390: Convert to realize() virtio-s390: s390_virtio_device_init() can't fail, simplify s390x/kvm: enable the new SIGP handling in user space s390x/kvm: deliver SIGP RESTART directly if stopped s390x: add function to deliver restart irqs s390x/kvm: SIGP START is only applicable when STOPPED s390x/kvm: implement handling of new SIGP orders s390x/kvm: trace all SIGP orders s390x/kvm: helper to set the SIGP status in SigpInfo s390x/kvm: pass the SIGP instruction parameter to the SIGP handler s390x/kvm: more details for SIGP handler with one destination vcpu s390x: introduce defines for SIGP condition codes synchronize Linux headers to 4.0-rc3 Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2015-03-10cpu: Make cpu_init() return QOM CPUState objectEduardo Habkost1-1/+1
Instead of making cpu_init() return CPUArchState, return CPUState. Changes were made using the Coccinelle semantic patch below. @@ typedef CPUState; identifier e; expression args; type CPUArchState; @@ - e = + cpu = cpu_init(args); - if (!e) { + if (!cpu) { ... } - cpu = ENV_GET_CPU(env); + e = cpu->env_ptr; @@ identifier new_env, new_cpu, env, cpu; type CPUArchState; expression args; @@ -{ - CPUState *cpu = ENV_GET_CPU(env); - CPUArchState *new_env = cpu_init(args); - CPUState *new_cpu = ENV_GET_CPU(new_env); +{ + CPUState *cpu = ENV_GET_CPU(env); + CPUState *new_cpu = cpu_init(args); + CPUArchState *new_env = new_cpu->env_ptr; ... } @@ identifier c, cpu_init_func, cpu_model; type StateType, CPUType; @@ -static inline StateType* cpu_init(const char *cpu_model) -{ - CPUType *c = cpu_init_func(cpu_model); ( - if (c == NULL) { - return NULL; - } - return &c->env; | - if (c) { - return &c->env; - } - return NULL; ) -} +#define cpu_init(cpu_model) CPU(cpu_init_func(cpu_model)) @@ identifier cpu_init_func; identifier model; @@ -#define cpu_init(model) (&cpu_init_func(model)->env) +#define cpu_init(model) CPU(cpu_init_func(model)) Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Riku Voipio <riku.voipio@iki.fi> Cc: Richard Henderson <rth@twiddle.net> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Michael Walle <michael@walle.cc> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Leon Alrae <leon.alrae@imgtec.com> Cc: Anthony Green <green@moxielogic.com> Cc: Jia Liu <proljc@gmail.com> Cc: Alexander Graf <agraf@suse.de> Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Cc: Max Filippov <jcmvbkbc@gmail.com> [AF: Fixed up cpu_copy() manually] Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-03-10s390x/kvm: passing max memory size to acceleratorDominik Dingel2-0/+59
With "KVM: s390: Allow userspace to limit guest memory size" KVM is able to do some optimizations based on the guest memory limit. The guest memory limit is computed by the initial definition and with the notion of hotplugged memory. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Guenther Hutzl <hutzl@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@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: <1425570981-40609-3-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10s390x/kvm: enable the new SIGP handling in user spaceDavid Hildenbrand1-0/+3
All required SIGP handlers have been implemented in QEMU. Let's enable the new sigp handling in user space if the kernel supports it. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-11-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10s390x/kvm: deliver SIGP RESTART directly if stoppedDavid Hildenbrand1-2/+11
According to the PoP, a restart irq has to be delivered "without first honoring any other pending interruptions", if a cpu is in the STOPPED state. While it is hard to implement this case in kvm, it can easily be handled in qemu. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-10-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10s390x: add function to deliver restart irqsDavid Hildenbrand2-8/+32
This patch adds a helper function to deliver restart irqs. To be able to be used by kvm, the psw load/store methods have to perform special cc-code handling only when running with tcg. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-9-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10s390x/kvm: SIGP START is only applicable when STOPPEDDavid Hildenbrand1-0/+5
In preparation for other CPU states, SIGP START will only start a VCPU if it is in the STOPPED state. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-8-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10s390x/kvm: implement handling of new SIGP ordersDavid Hildenbrand4-5/+218
This patch adds handling code for the following SIGP orders: - SIGP SET ARCHITECTURE - SIGP SET PREFIX - SIGP STOP - SIGP STOP AND STORE STATUS - SIGP STORE STATUS AT ADDRESS SIGP STOP (AND STORE STATUS) are the only orders that can stay pending forever (and may only be interrupted by resets), so special care has to be taken about them. Their status also has to be tracked within QEMU. This patch takes care of migrating this status (e.g. if migration happens during a SIGP STOP). Due to the BQL, only one VCPU is currently able to execute SIGP handlers at a time. According to the PoP, BUSY should be returned if another SIGP order is currently being executed on a VCPU. This can only be implemented when the BQL does not protect all handlers. For now, all SIGP orders on all VCPUs will be serialized, which will be okay for the first shot. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-7-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10s390x/kvm: trace all SIGP ordersDavid Hildenbrand1-1/+3
This patch adds tracing code for all SIGP orders (including the destination vcpu and the resulting condition code). Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-6-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10s390x/kvm: helper to set the SIGP status in SigpInfoDavid Hildenbrand1-3/+8
Whenever we set the SIGP status in the status register, we have to wipe out the lower 4 bytes and keep the higher 4 bytes. Also the condition code will always be set to STATUS_STORED. Let's introduce the wrapper for SigpInfo, as this will avoid most duplicate code in the future. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-5-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10s390x/kvm: pass the SIGP instruction parameter to the SIGP handlerDavid Hildenbrand1-2/+6
The parameter of the SIGP instruction will be neded in the future. Let's read it out and store it in the struct sigp_info, so it can be passed to the sigp handlers. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-4-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10s390x/kvm: more details for SIGP handler with one destination vcpuDavid Hildenbrand1-62/+91
Whenever a sigp order is to be executed by a target vcpu, we use run_on_cpu(). As we have only one pointer to pass all data to these sigp handlers, let's introduce the struct sigp_info and use it as a transport container. All orders targeting a single vcpu are now dispatched from a separate handler. The destination vcpu is only valid for these orders and must not be checked for SIGP SET ARCHITECTURE. The sigp_info is filled with life in this new handler and used to pass the information about the sigp order to the existing handlers. The cc is set within these handlers. Rename sigp_cpu_start() and sigp_cpu_restart() on the way to match the SIGP order names (in order to avoid touching affected lines several times). Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-3-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10s390x: introduce defines for SIGP condition codesDavid Hildenbrand3-10/+17
This patch introduces defines for the SIGP condition codes and replaces all occurrences of numeral condition codes with the new defines. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Message-Id: <1424783731-43426-2-git-send-email-jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-10Remove superfluous '\n' around error_report()Gonglei1-1/+1
Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2015-02-18s390x/helper: Remove s390_cpu_physical_memory_mapThomas Huth2-29/+0
The function is now not used anymore, so it can be removed safely. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/ioinst: Rework memory access in TPI instructionThomas Huth2-13/+8
Change the handler for TPI to use the new logical memory access functions. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/ioinst: Rework memory access in CHSC instructionThomas Huth1-9/+13
Change the CHSC handler to correctly use logical addresses, too. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/ioinst: Rework memory access in STCRW instructionThomas Huth2-11/+10
Change the handler for STCRW to use the new logical memory access functions. Since STCRW is suppressed on protection/access exceptions, we also have to make sure to re-queue the CRW in case it could not be written to the memory. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/ioinst: Rework memory access in TSCH instructionThomas Huth2-15/+21
Change the TSCH handler to use the new logical memory access functions. Since the channel should not be updated in case of a protection or access exception while writing to the guest memory, the css_do_tsch() has to be split up into two parts, one for retrieving the IRB and one for the update. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/ioinst: Set condition code in ioinst_handle_tsch() handlerThomas Huth3-12/+7
Move the setting of the condition code from kvm.c into the handler function in ioinst.c itself, just like it has been done with the other handlers already (TSCH has just not been changed yet since it is called from a different dispatcher in kvm.c). Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/ioinst: Rework memory access in STSCH instructionThomas Huth1-14/+22
Change the handler for STSCH to use the new logical memory access functions. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/ioinst: Rework memory access in SSCH instructionThomas Huth1-11/+5
Change the handler for SSCH to use the new logical memory access functions. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/ioinst: Rework memory access in MSCH instructionThomas Huth1-13/+7
Change the handler for MSCH to use the new logical memory access functions. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/css: Make schib parameter of css_do_msch constThomas Huth1-1/+1
The schib parameter of css_do_msch() can be declared as const to make it clear that it does not get modified by this function. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Add function for accessing guest memoryThomas Huth2-0/+113
According to the POP specification, the parameter blocks of various functions like the IO instructions are accessed with logical addresses. Thus we need a function that can read or write a buffer from/to the guest's logical address space. This patch now provides a function that can be used to access virtual guest memory by using the mmu_translate function of QEMU to convert the virtual addresses to physical. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/kvm: Add function for injecting pgm access exceptionsThomas Huth3-6/+33
Program access exceptions are defined to deliver a translation exception code in the low-core. Add a function trigger_access_exception() that generates the proper program interrupt on both KVM and non-KVM systems and switch the existing code to use it. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Clean up mmu_translate_asc()Thomas Huth1-24/+15
We can get rid of the switch(asc) in mmu_translate_asc() by simply selecting the right control register ASCE in the mmu_translate() function already. This patch is based on an original patch/idea by Ralf Hoppe. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Check bit 52 in page table entryThomas Huth2-1/+5
Bit 52 in a page table entry has always to be zero, or a translation specification exception is to be recognized. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Renaming related to the ASCE confusionThomas Huth1-6/+6
An Address Space Control Element (ASCE) is only the very first unit of an s390 address translation (normally residing in one of the control registers). The entries in the page tables are called differently. So let's call the relevant variable pt_entry instead of asce in mmu_translate_pte() to avoid future confusion (thus there is no functional change in this patch, just renaming). Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Add support for read-only regionsThomas Huth2-3/+5
If the "DAT-protection" bit is set in the region table entry and EDAT is enabled, only read accesses are allowed in the corresponding memory area. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Fix the exception codes for illegal table entriesThomas Huth1-2/+1
Each different level of region/segment table has a dedicated exception type for illegal entries. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Fix exception types when checking the ASCEsThomas Huth1-3/+3
If an ASCE has illegal bits set, an ASCE-type exception should be generated instead of a translation specification exception. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Fix translation exception code in lowcoreThomas Huth1-33/+15
The address space bits in the translation exception code were wrong. In fact, we can simply copy the bits from the PSW, so there's no need for the trans_bits() function anymore. Additionally, we now also set the fetch/store bits in the translation exception code, so a guest can determine whether the exception occured during a write or during a read. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Skip exceptions properly when translating addresses for debugThomas Huth4-40/+59
When a fault occurs during the MMU lookup in s390_cpu_get_phys_page_debug(), the trigger_page_fault() function writes the translation exception code into the lowcore - something you would not expect during a memory access by the debugger. Ease this problem by adding an additional parameter to mmu_translate() which can be used to specify whether a program check and the translation exception code should be injected or not. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Check table length and offset fieldsThomas Huth2-0/+30
The ACSEs have a table length field and the region entries have table length and offset fields which must be checked during translation to see whether the given virtual address is really covered by the translation table. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Fix the handling of the table levelsThomas Huth1-68/+47
The current code used a wrong and very confusing way of dealing with the table levels by introducing a "fake level above current". However, the real problem was simply that the checks for the region/segment invalid bit and for the matching region/segment level was done at the wrong spot in the code - it has to be done after the first table entry has been looked up instead (e.g. there is also no "invalid" bit in the ASCE itself and the current "level" has to be the same as the level in the entry that we just looked up). Also the entries for the segment table are quite a bit different compared to the region table entries. So this patch moves the related code into the function mmu_translate_segment() to make it clear at which table level we currently are and to get rid of the ugly switch-statement in the function mmu_translate_region(). Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Fix the check for the real-space designation bitThomas Huth1-7/+6
The real-space designation bits live in the ASCEs, not in the table entries, so the check must be done before we start walking the MMU table. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-18s390x/mmu: Move mmu_translate() and friends to separate fileThomas Huth4-323/+359
helper.c is quite overcrowded already, so let's move the MMU translation to a separate file instead (like it has been done with the other targets already). Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-13s390x/ipl: drop reipl parameters on resetsFan Zhang1-1/+2
Whenever a reboot initiated by the guest is done, the reipl parameters should remain valid. The disk configured by the guest is to be used for ipl'ing. External reboot/reset request (e.g. via virsh reset guest) should completely reset the guest to the initial state, and therefore also reset the reipl parameters, resulting in an ipl behaviour of the initially configured guest. This could be an external kernel or a disk. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Fan Zhang <zhangfan@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-13s390x/ipl: support diagnose 308 subcodes 5 and 6Fan Zhang1-2/+31
To support dynamically updating the IPL device from inside the KVM guest on the s390 platform, DIAG 308 instruction is intercepted in QEMU to handle the request. Subcode 5 allows to specify a new boot device, which is saved for later in the s390_ipl device. This also allows to switch from an external kernel to a boot device. Subcode 6 retrieves boot device configuration that has been previously set. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Fan Zhang <zhangfan@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-02-12tcg: Introduce tcg_op_buf_count and tcg_op_buf_fullRichard Henderson1-6/+3
The method by which we count the number of ops emitted is going to change. Abstract that away into some inlines. Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-02-12tcg: Move emit of INDEX_op_end into gen_tb_endRichard Henderson1-1/+1
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-02-03Merge remote-tracking branch 'remotes/rth/tags/pull-tg-s390-20150203' into ↵Peter Maydell6-25/+140
staging s390 translator bug fixes # gpg: Signature made Tue 03 Feb 2015 20:39:15 GMT using RSA key ID 4DD0279B # gpg: Good signature from "Richard Henderson <rth7680@gmail.com>" # gpg: aka "Richard Henderson <rth@redhat.com>" # gpg: aka "Richard Henderson <rth@twiddle.net>" * remotes/rth/tags/pull-tg-s390-20150203: target-s390x: fix and optimize slb* and slbg* computation of carry/borrow flag target-s390x: support OC and NC in the EX instruction disas/s390.c: Remove unused variables target-s390x: Mark check_privileged() as !CONFIG_USER_ONLY target-s390: Implement ECAG target-s390: Implement LURA, LURAG, STURG target-s390: Fix STURA target-s390: Fix STIDP target-s390: Implement EPSW target-s390: Implement SAM specification exception Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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