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2014-12-16qemu-log: add log category for MMU infoAntony Pavlov1-2/+2
Running barebox on qemu-system-mips* with '-d unimp' overloads stderr by very very many mips_cpu_handle_mmu_fault() messages: mips_cpu_handle_mmu_fault address=b80003fd ret 0 physical 00000000180003fd prot 3 mips_cpu_handle_mmu_fault address=a0800884 ret 0 physical 0000000000800884 prot 3 mips_cpu_handle_mmu_fault pc a080cd80 ad b80003fd rw 0 mmu_idx 0 So it's very difficult to find LOG_UNIMP message. The mips_cpu_handle_mmu_fault() messages appear on enabling ANY logging! It's not very handy. Adding separate log category for *_cpu_handle_mmu_fault() logging fixes the problem. Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Acked-by: Alexander Graf <agraf@suse.de> Reviewed-by: Richard Henderson <rth@twiddle.net> Message-id: 1418489298-1184-1-git-send-email-antonynpavlov@gmail.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-15Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell1-2/+1
- Migration and linuxboot fixes for 2.2 regressions - valgrind/KVM support - small i386 patches - PCI SD host controller support - malloc/free cleanups from Markus (x86/scsi) - IvyBridge model - XSAVES support for KVM - initial patches from record/replay # gpg: Signature made Mon 15 Dec 2014 16:35:08 GMT 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: (47 commits) sdhci: Support SDHCI devices on PCI sdhci: Define SDHCI PCI ids sdhci: Add "sysbus" to sdhci QOM types and methods sdhci: Remove class "virtual" methods sdhci: Set a default frequency clock serial: only resample THR interrupt on rising edge of IER.THRI serial: update LSR on enabling/disabling FIFOs serial: clean up THRE/TEMT handling serial: reset thri_pending on IER writes with THRI=0 linuxboot: fix loading old kernels kvm/apic: fix 2.2->2.1 migration target-i386: add Ivy Bridge CPU model target-i386: add f16c and rdrand to Haswell and Broadwell target-i386: add VME to all CPUs pc: add 2.3 machine types i386: do not cross the pages boundaries in replay mode cpus: make icount warp behave well with respect to stop/cont timer: introduce new QEMU_CLOCK_VIRTUAL_RT clock cpu-exec: invalidate nocache translation if they are interrupted icount: introduce cpu_get_icount_raw ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-12-15valgrind/s390x: avoid false positives on KVM_SET_FPU ioctlChristian Borntraeger1-1/+1
struct kvm_fpu contains an alignment padding on s390x. Let's use a designated initializer to avoid false positives from valgrind/memcheck. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-15KVM_CAP_IRQFD and KVM_CAP_IRQFD_RESAMPLE checksEric Auger1-1/+0
Compute kvm_irqfds_allowed by checking the KVM_CAP_IRQFD extension. Remove direct settings in architecture specific files. Add a new kvm_resamplefds_allowed variable, initialized by checking the KVM_CAP_IRQFD_RESAMPLE extension. Add a corresponding kvm_resamplefds_enabled() function. A special notice for s390 where KVM_CAP_IRQFD was not immediatly advirtised when irqfd capability was introduced in the kernel. KVM_CAP_IRQ_ROUTING was advertised instead. This was fixed in "KVM: s390: announce irqfd capability", ebc3226202d5956a5963185222982d435378b899 whereas irqfd support was brought in 84223598778ba08041f4297fda485df83414d57e, "KVM: s390: irq routing for adapter interrupts". Both commits first appear in 3.15 so there should not be any kernel version impacted by this QEMU modification. Signed-off-by: Eric Auger <eric.auger@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-12-10target-s390x: fix possible out of bounds readzhanghailiang1-3/+3
Array index starts at 0, so the valid index of ext_queue array, io_queue array, mchk_queue array should be MAX_EXT_QUEUE - 1, MAX_IO_QUEUE - 1, MAX_MCHK_QUEUE - 1. The original checks missed the invalid bound value, which will lead possible out of bounds read in the follow codes. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-11-26s390x/kvm: Fix compile errorChristian Borntraeger1-2/+2
commit a2b257d6212a "memory: expose alignment used for allocating RAM as MemoryRegion API" triggered a compile error on KVM/s390x. Fix the prototype and the implementation of legacy_s390_alloc. Cc: Igor Mammedov <imammedo@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-11-23memory: expose alignment used for allocating RAM as MemoryRegion APIIgor Mammedov1-1/+1
introduce memory_region_get_alignment() that returns underlying memory block alignment or 0 if it's not relevant/implemented for backend. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-11-05s390x/kvm: Fix warning from sparseThomas Huth1-1/+1
When running "sparse" with the s390x kvm.c code, it complains that "constant 0x00400f1d40330000 is so big it is long" - let's fix this by appending a proper suffix. Signed-off-by: Thomas Huth <thuth@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: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-11-05s390x/kvm: Fix opcode decoding for eb instruction handlerFrank Blaschka1-4/+4
The second byte of the opcode is encoded in the lowest byte of the ipb field, not the lowest byte of the ipa field. Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
2014-11-05s390x: Implement SAM{24,31,64}Alexander Graf2-3/+15
The SAM instructions simply change 2 bits in PSW.MASK to advertise the current memory mode. While we can't fully guarantee that 31 bit mode (or even remotely 24 bit mode) actually work correctly, we don't check whether lpswe modifies these bits, so we shouldn't keep the guest from executing SAM instructions either. This patch implements all SAM instrutions with their actual PSW changing semantics, making more recent Linux kernels boot properly which do issue a SAM31 call during early boot. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Reviewed-by: Richard Henderson <rth@twiddle.net>
2014-11-05s390x: Fix sclp console inputAlexander Graf1-2/+0
When injecting an sclp console interrupt into the guest, we increase the PC by 4 for some reason. I have no idea why I put that code there, but it's clearly wrong. Remove the increment. This patch fixes sclp serial input for the ccw machine. Signed-off-by: Alexander Graf <agraf@suse.de> Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
2014-10-10s390x/migration: migrate CPU stateThomas Huth4-7/+82
This patch provides the cpu save information for dumps and later life migration and enables migration of the CPU state. The code is based on earlier work from Christian Borntraeger and Jason Herne. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> [provide cpu_post_load()] Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> CC: Andreas Faerber <afaerber@suse.de> CC: Christian Borntraeger <borntraeger@de.ibm.com> CC: Jason J. Herne <jjherne@us.ibm.com> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> [Cornelia Huck: tweaked cpu_post_load() comment] Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-10-10s390x/kvm: synchronize the cpu state after SIGP (INITIAL) CPU RESETDavid Hildenbrand1-0/+2
We need to synchronize registers after a reset has been performed. The current code does that in qemu_system_reset(), load_normal_reset() and modified_clear_reset() for all vcpus. After SIGP (INITIAL) CPU RESET, this needs to be done for the targeted vcpu as well, so let's call cpu_synchronize_post_reset() in the respective handlers. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> CC: Andreas Faerber <afaerber@suse.de> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-10-10s390x/kvm: reuse kvm_s390_reset_vcpu() to get rid of ifdefsDavid Hildenbrand3-12/+7
This patch reuses kvm_s390_reset_vcpu() to get rid of some CONFIG_KVM and CONFIG_USER_ONLY ifdefs in cpu.c. In order to get rid of CONFIG_USER_ONLY, kvm_s390_reset_vcpu() has to provide a dummy implementation - the two definitions are moved to the proper section in cpu.h. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> CC: Andreas Faerber <afaerber@suse.de> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-10-10s390x/kvm: propagate s390 cpu state to kvmDavid Hildenbrand3-2/+49
Let QEMU propagate the cpu state to kvm. If kvm doesn't yet support it, it is silently ignored as kvm will still handle the cpu state itself in that case. The state is not synced back, thus kvm won't have a chance to actively modify the cpu state. To do so, control has to be given back to QEMU (which is already done so in all relevant cases). Setting of the cpu state can fail either because kvm doesn't support the interface yet, or because the state is invalid/not supported. Failed attempts will be traced Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> CC: Andreas Faerber <afaerber@suse.de> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-10-10s390x/kvm: proper use of the cpu states OPERATING and STOPPEDDavid Hildenbrand4-49/+73
This patch makes sure that halting a cpu and stopping a cpu are two different things. Stopping a cpu will also set the cpu halted - this is needed for common infrastructure to work (note that the stop and stopped flag cannot be used for our purpose because they are already used by other mechanisms). A cpu can be halted ("waiting") when it is operating. If interrupts are disabled, this is called a "disabled wait", as it can't be woken up anymore. A stopped cpu is treated like a "disabled wait" cpu, but in order to prepare for a proper cpu state synchronization with the kvm part, we need to track the real logical state of a cpu. Signed-off-by: David Hildenbrand <dahi@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: Christian Borntraeger <borntraeger@de.ibm.com> CC: Andreas Faerber <afaerber@suse.de> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-10-10s390x/kvm: introduce proper states for s390 cpusDavid Hildenbrand2-0/+57
Until now, when a s390 cpu was stopped or halted, the number of running CPUs was tracked in a global variable. This was problematic for migration, so Jason came up with a per-cpu running state. As it turns out, we want to track the full logical state of a target vcpu, so we need real s390 cpu states. This patch is based on an initial patch by Jason Herne, but was heavily rewritten when adding the cpu states STOPPED and OPERATING. On the way we move add_del_running to cpu.c (the declaration is already in cpu.h) and modify the users where appropriate. Please note that the cpu is still set to be stopped when it is halted, which is wrong. This will be fixed in the next patch. The LOAD and CHECK-STOP state will not be used in the first step. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> [folded Jason's patch into David's patch to avoid add/remove same lines] Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> CC: Andreas Faerber <afaerber@suse.de> Tested-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-09-25target-s390x: Use cpu_exec_interrupt qom hookRichard Henderson3-0/+15
Cc: Alexander Graf <agraf@suse.de> Signed-off-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 1410626734-3804-9-git-send-email-rth@twiddle.net Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-23s390x/css: support format-0 ccwsCornelia Huck1-0/+10
Add support for format-0 ccws in channel programs. As a format-1 ccw contains the same information as format-0 ccws, only supporting larger addresses, simply convert every ccw to format-1 as we walk the chain. Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2014-09-01s390x/gdb: coding style fixesDavid Hildenbrand1-2/+2
This patch cleanes up two coding style issues (missing whitespaces). Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2014-09-01s390x/gdb: generate target.xml and handle fp/ac as coprocessorsDavid Hildenbrand4-60/+76
This patch reduces the core registers to the psw and the general purpose registers. The fpc and ac registers are handled as coprocessors registers by gdb. This allows to reuse the feature xml files taken from gdb without further modification and is what other architectures do. The target.xml is now generated and provided to the gdb client. Therefore, the client doesn't have to guess which registers are available at which logical register number. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2014-09-01s390x/gdb: don't touch the cc if tcg is not enabledDavid Hildenbrand1-4/+10
When reading/writing the psw mask, the condition code may only be touched if running on tcg. Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2014-09-01sclp-s390: Add memory hotplug SCLPsMatthew Rosato2-0/+20
Add memory information to read SCP info and add handlers for Read Storage Element Information, Attach Storage Element, Assign Storage and Unassign Storage. Signed-off-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2014-09-01virtio-ccw: Include standby memory when calculating storage incrementMatthew Rosato1-0/+3
When determining the memory increment size, use the maxmem size if it was specified. Signed-off-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2014-09-01s390x/kvm: execute the first cpu reset on the vcpu threadDavid Hildenbrand1-0/+4
As all full cpu resets currently call into the kernel to do initial cpu reset, let's run this reset (triggered by cpu_s390x_init()) on the proper vcpu thread. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2014-09-01s390x/kvm: execute "system reset" cpu resets on the vcpu threadDavid Hildenbrand1-1/+1
Let's execute resets triggered by qemu system resets on the target vcpu thread. This will avoid synchronize_rcu's in the kernel. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2014-09-01s390x/kvm: execute sigp orders on the target vcpu threadDavid Hildenbrand1-7/+16
All sigp orders that can result in ioctls on the target vcpu should be executed on the associated vcpu thread. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2014-09-01s390x/kvm: run guest triggered resets on the target vcpu threadDavid Hildenbrand2-22/+23
Currently, load_normal_reset() and modified_clear_reset() as triggered by a guest vcpu will initiate cpu resets on the current vcpu thread for all cpus. The reset should happen on the individual vcpu thread instead, so let's use run_on_cpu() for this. This avoids calls to synchronize_rcu() in the kernel. Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2014-08-12trace: [tcg] Include TCG-tracing header on all targetsLluís Vilanova1-0/+2
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-07-14s390x/kvm: synchronize guest floating point registersJason J. Herne1-0/+23
Add code to kvm_arch_get_registers and kvm_arch_put_registers to save/restore floating point registers. This missing sync was unnoticed until migration of userspace that uses fprs. Signed-off-by: Jason J. Herne <jjherne@us.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> [Update patch to latest upstream] Cc: qemu-stable@nongnu.org Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-06-24target-s390x: Remove unused ld_code6() functionPeter Maydell1-5/+0
The ld_code6() function is unused; remove it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-06-23qapi event: convert GUEST_PANICKEDWenchao Xia1-6/+3
'monitor.h' is still included in target-s390x/kvm.c, since I have no good way to verify whether other code need it on my x86 host. Signed-off-by: Wenchao Xia <wenchaoqemu@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2014-06-10s390x/kvm: inject via flicCornelia Huck2-1/+19
Try to inject floating interrupts via the flic if it is available. This allows us to inject the full range of floating interrupts. Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-06-10s390x: cleanup interrupt injectionCornelia Huck4-105/+85
Remove the need for a cpu to inject a floating interrupt on kvm. Acked-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-06-10s390x/kvm: add alternative injection interfaceCornelia Huck2-0/+88
Add kvm_s390_{vcpu,floating}_interrupt, which offer the possibility to inject interrupts with larger payloads (when a kvm backend becomes available). Moreover, kvm_s390_floating_interrupt() does no longer have the bogus requirement for a vcpu. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-06-10s390x: consolidate floating interruptsCornelia Huck3-29/+52
Move the injection code for all floating interrupts to interrupt.c and add a comment. Also get rid of the #ifdef CONFIG_KVM for the service interrupt. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-06-10s390x/kvm: Log unmanageable program interruptionsThomas Huth1-0/+6
The kernel only drops to userspace if an endless program interrupt loop has been detected. Let's print an error message in this case to inform the user about the crash and stop the affected CPU with a panic event, just like it is already done for the external interruption loop detection. 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: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-06-10s390x/kvm: Log unmanageable external interruptionsThomas Huth1-6/+29
Interception code 0x14 only drops to userspace when an unmanageable external interruption interception occured (e.g. if the External New PSW does not disable external interruptions). Instead of bailing out via the default handler, it is better to inform the user with a proper error message that also includes the bad PSW, and to stop the affected CPU with a panic event instead. 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: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-06-10s390x/kvm: enable/reset cmma via vm attributesDominik Dingel3-0/+72
Exploit the new api for userspace-controlled cmma. If supported, enable cmma during kvm initialization and register a reset handler for cmma, which is also called directly from the load IPL code. The reset functionality is needed to reset the cmma state of the guest pages, e.g. if a system reset is triggered via qemu monitor; otherwise this could result in data corruption. A guest triggered reboot may now lead to multiple cmma resets; this is OK, however, as this is slowpath anyway and the simplest way to achieve the intended effects. Signed-off-by: Dominik Dingel <dingel@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-06-05softmmu: introduce cpu_ldst.hPaolo Bonzini5-6/+5
This will collect all load and store helpers soon. For now it is just a replacement for softmmu_exec.h, which this patch stops including directly, but we also include it where this will be necessary in order to simplify the next patch. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-06-05softmmu: commonize helper definitionsPaolo Bonzini1-14/+0
They do not need to be in op_helper.c. Because cputlb.c now includes softmmu_template.h twice for each size, io_readX must be elided the second time through. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-28tcg: Invert the inclusion of helper.hRichard Henderson7-12/+7
Rather than include helper.h with N values of GEN_HELPER, include a secondary file that sets up the macros to include helper.h. This minimizes the files that must be rebuilt when changing the macros for file N. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2014-05-20s390x/kvm: hw debugging support via guest PER facilityDavid Hildenbrand3-3/+156
This patch makes use of the hw debugging support in kvm (provided by the guest's PER facility) on s390. It enables the following features, available using the gdbserver: - single-stepping - hw breakpoints - hw watchpoints Signed-off-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>
2014-05-20s390x/kvm: software breakpoint supportDavid Hildenbrand1-3/+22
This patch allows to insert and remove sw breakpoints using the QEMU gdbserver on s390 as well as to interrupt execution on a breakpoint hit when running with KVM enabled. Whenever a software breakpoint is inserted, common code calls kvm ioctl KVM_UPDATE_GUEST_DEBUG. As this method's default on s390 is to return an error if not implement, the insertion will fail. Therefore, KVM also has to be updated in order to make use of software breakpoints. Signed-off-by: David Hildenbrand <dahi@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: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-05-20s390x: remove duplicate definitions of DIAG 501David Hildenbrand1-8/+12
When restoring the previously saved instruction in kvm_arch_remove_sw_breakpoint(), we only restored one byte. Let's use the sizeof() operator to make sure we restore the entire instruction. While we are at it, let's remove the duplicate definitions of DIAG 501 and replace its size (used when reading/writing the instruction) with a sizeof() operator to make the code self explaining and less error-prone. Signed-off-by: David Hildenbrand <dahi@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: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-05-20s390x/virtio-ccw: wire up irq routing and irqfdsCornelia Huck1-0/+10
Make use of the new s390 adapter irq routing support to enable real in-kernel irqfds for virtio-ccw with adapter interrupts. Note that s390 doesn't provide the common KVM_CAP_IRQCHIP capability, but rather needs KVM_CAP_S390_IRQCHIP to be enabled. This is to ensure backward compatibility. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-05-13kvm: reset state from the CPU's reset methodPaolo Bonzini3-2/+13
Now that we have a CPU object with a reset method, it is better to keep the KVM reset close to the CPU reset. Using qemu_register_reset as we do now keeps them far apart. With this patch, PPC no longer calls the kvm_arch_ function, so it can get removed there. Other arches call it from their CPU reset handler, and the function gets an ARMCPU/X86CPU/S390CPU. Note that ARM- and s390-specific functions are called kvm_arm_* and kvm_s390_*, while x86-specific functions are called kvm_arch_*. That follows the convention used by the different architectures. Changing that is the topic of a separate patch. Reviewed-by: Gleb Natapov <gnatapov@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-13kvm: make one_reg helpers available for everyoneCornelia Huck1-29/+0
s390x introduced helper functions for getting/setting one_regs with commit 860643bc. However, nothing about these is s390-specific. Alexey Kardashevskiy had already posted a general version, so let's merge the two patches and massage the code a bit. CC: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-07s390x/helper: Added format control bit to MMU translationThomas Huth2-18/+56
With the EDAT-1 facility, the MMU translation can stop at the segment table already, pointing to a 1 MB block. And while we're at it, move the page table entry handling to a separate function, too, as suggested by Alexander Graf. Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-05-07s390x/helper: Fixed real-to-absolute address translationThomas Huth1-3/+15
The real-to-absolute address translation in mmu_translate() was missing the second part for translating the page at the prefix address back to the 0 page. And while we're at it, also moved the code into a separate helper function since this might come in handy for other parts of the code, too. Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
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