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2014-09-01s390x/gdb: coding style fixesDavid Hildenbrand
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 Hildenbrand
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 Hildenbrand
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 Rosato
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 Rosato
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 Hildenbrand
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 Hildenbrand
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 Hildenbrand
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 Hildenbrand
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 Vilanova
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. Herne
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 Maydell
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 Xia
'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 Huck
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 Huck
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 Huck
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 Huck
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 Huth
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 Huth
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 Dingel
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 Bonzini
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 Bonzini
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 Henderson
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 Hildenbrand
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 Hildenbrand
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 Hildenbrand
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 Huck
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 Bonzini
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 Huck
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 Huth
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 Huth
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>
2014-04-30s390x: use kvm_vcpu_enable_cap()Cornelia Huck
Make kvm_s390_enable_css_support() use new interface. Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-04-28Merge remote-tracking branch 'remotes/mjt/tags/trivial-patches-2014-04-28' ↵Peter Maydell
into staging trivial patches for 2014-04-28 # gpg: Signature made Mon 28 Apr 2014 05:56:01 BST using RSA key ID A4C3D7DB # gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>" # gpg: aka "Michael Tokarev <mjt@corpit.ru>" # gpg: aka "Michael Tokarev <mjt@debian.org>" # 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: 6EE1 95D1 886E 8FFB 810D 4324 457C E0A0 8044 65C5 # Subkey fingerprint: 6F67 E18E 7C91 C5B1 5514 66A7 BEE5 9D74 A4C3 D7DB * remotes/mjt/tags/trivial-patches-2014-04-28: slirp/smb: Move ncalrpc directory to tmp po: add proper Language: tags to .po files po/Makefile: fix $SRC_PATH reference init_paths: fix minor memory leak virtfs-proxy-helper: fix call to accept net/net.c: remove unnecessary semicolon Add QEMU logo (SVG file) vl: avoid closing stdout with 'writeconfig' xilinx: Fix typo in comment (Marvel -> Marvell) vl: Eliminate a superfluous local variable vl: Remove useless 'continue' gitignore: cleanups #2 tests/.gitignore: Ignore test-rfifolock move test-* from .gitignore to tests/.gitignore configure: Improve help behavior vl: convert -m to QemuOpts qemu-option: introduce qemu_find_opts_singleton misc: Use cpu_physical_memory_read and cpu_physical_memory_write Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-04-27misc: Use cpu_physical_memory_read and cpu_physical_memory_writeStefan Weil
These functions don't need type casts (as does cpu_physical_memory_rw) and also make the code better readable. Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-04-25s390x/kvm: sync gbea and pp registerChristian Borntraeger
We also need to sync guest breaking event address and program parameter register for migration support. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-04-25s390x/kvm: rework KVM synchronize to tracing for some ONEREGSChristian Borntraeger
Some ONE_REGS on s390 are not protected by a capability. Older kernels might not provide those and return an error. Fortunately these registers are only critical for the migration path. There is no need to error out on reset and normal runtime. Furthermore, these kernels don't provide a proper dirty bitmap anyway, so let's use tracing for those errors. Also provide generic one reg helper to simplify the code. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-04-25s390x: empty function stubs in preparation for __KVM_HAVE_GUEST_DEBUGDavid Hildenbrand
This patch creates empty function stubs (used by the gdbserver) in preparation for the hw debugging support by kvm on s390, which will enable the __KVM_HAVE_GUEST_DEBUG define in the linux headers and require these methods on the qemu side. 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: qemu-stable@nongnu.org Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2014-03-27target-s390x: Add missing 'static' and 'const' attributesStefan Weil
This fixes warnings from the static code analysis (smatch). Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-03-13cputlb: Change tlb_set_page() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cputlb: Change tlb_flush() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cputlb: Change tlb_flush_page() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13exec: Change cpu_abort() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13translate-all: Change cpu_restore_state() argument to CPUStateAndreas Färber
This lets us drop some local variables in tlb_fill() functions. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu-exec: Change cpu_loop_exit() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13exec: Change tlb_fill() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move breakpoints field from CPU_COMMON to CPUStateAndreas Färber
Most targets were using offsetof(CPUFooState, breakpoints) to determine how much of CPUFooState to clear on reset. Use the next field after CPU_COMMON instead, if any, or sizeof(CPUFooState) otherwise. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move exception_index field from CPU_COMMON to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Turn cpu_handle_mmu_fault() into a CPUClass hookAndreas Färber
Note that while such functions may exist both for *-user and softmmu, only *-user uses the CPUState hook, while softmmu reuses the prototype for calling it directly. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Turn cpu_has_work() into a CPUClass hookAndreas Färber
Default to false. Tidy variable naming and inline cast uses while at it. Tested-by: Jia Liu <proljc@gmail.com> (or32) Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13target-s390x: Clean up ENV_GET_CPU() usageAndreas Färber
Commits f606604f1c10b60ef294f1b9b229426521a365e3, 2c17449b3022ca9623c4a7e2a504a4150ac4ad30 and 5ce5944dc0ffdc43c11b5cad11e526f699aabe4c added usages of ENV_GET_CPU() macro in target-specific code. Use s390_env_get_cpu() instead. Cc: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andreas Färber <afaerber@suse.de>
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