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2018-08-23qom: convert the CPU list to RCUEmilio G. Cota
Iterating over the list without using atomics is undefined behaviour, since the list can be modified concurrently by other threads (e.g. every time a new thread is created in user-mode). Fix it by implementing the CPU list as an RCU QTAILQ. This requires a little bit of extra work to traverse list in reverse order (see previous patch), but other than that the conversion is trivial. Signed-off-by: Emilio G. Cota <cota@braap.org> Message-Id: <20180819091335.22863-12-cota@braap.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-08-20s390x: Enable KVM huge page backing supportJanosch Frank
QEMU has had huge page support for a longer time already, but KVM memory management under s390x needed some changes to work with huge backings. Now that we have support, let's enable it if requested and available. Otherwise we now properly tell the user if there is no support and back out instead of failing to run the VM later on. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Message-Id: <20180802070201.257406-1-frankja@linux.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-08-20s390x/kvm: add etoken facilityChristian Borntraeger
Provide the etoken facility. We need to handle cpu model, migration and clear reset. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Acked-by: Janosch Frank <frankja@linux.ibm.com> Message-Id: <20180731090448.36662-3-borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-08-20s390x/cpumodel: Add "-cpu max" supportDavid Hildenbrand
The "max" CPU model behaves like "-cpu host" when KVM is enabled, and like a CPU with the maximum possible feature set when TCG is enabled. While the "host" model can not be used under TCG ("kvm_required"), the "max" model can and "Enables all features supported by the accelerator in the current host". So we can treat "host" just as a special case of "max" (like x86 does). It differs to the "qemu" CPU model under TCG such that compatibility handling will not be performed and that some experimental CPU features not yet part of the "qemu" model might be indicated. These are right now under TCG (see "qemu_MAX"): - stfle53 - msa5-base - zpci This will result right now in the following warning when starting QEMU TCG with the "max" model: "qemu-system-s390x: warning: 'msa5-base' requires 'kimd-sha-512'." The "qemu" model (used as default in QEMU under TCG) will continue to work without such warnings. The "max" model in the current form might be interesting for kvm-unit-tests (where we would e.g. now also test "msa5-base"). The "max" model is neither static nor migration safe (like the "host" model). It is independent of the machine but dependends on the accelerator. It can be used to detect the maximum CPU model also under TCG from upper layers without having to care about CPU model names for CPU model expansion. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180725091233.3300-1-david@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> [CH: minor wording changes] Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-08-20s390x: remove 's390-squash-mcss' optionCornelia Huck
This option has been deprecated for two releases; remove it. Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Acked-by: Halil Pasic <pasic@linux.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-08-20s390x/cpumodel: enum type S390FeatGroup now gets generatedMichael Mueller
The enumeration type S390FeatGroup is now generated as well. This shall simplify the definition of new feature groups without the requirement to modify existing code. Signed-off-by: Michael Mueller <mimu@linux.ibm.com> Message-Id: <20180725143617.8731-1-mimu@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-18s390x/cpumodel: fix segmentation fault when baselining modelsDavid Hildenbrand
Usually, when baselining two CPU models, whereby one of them has base CPU features disabled (e.g. z14-base,msa=off), we fallback to an older model that did not have these features in the base model. We always try to create a "sane" CPU model (as far as possible), and one part of it is that removing base features is no good and to be avoided. Now, if we disable base features that were part of a z900, we're out of luck. We won't find a CPU model and QEMU will segfault. This is a scenario that should never happen in real life, but it can be used to crash QEMU. So let's properly report an error if we baseline e.g.: { "execute": "query-cpu-model-baseline", "arguments" : { "modela": { "name": "z14-base", "props": {"esan3" : false}}, "modelb": { "name": "z14"}} } Instead of segfaulting. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180718092330.19465-1-david@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/tcg: fix locking problem with tcg_s390_tod_updatedDavid Hildenbrand
tcg_s390_tod_updated() is always called with the iothread being locked (e.g. from S390TODClass->set() e.g. via HELPER(sck) or on incoming migration). The helper we call takes the lock itself - bad. Let's change that by factoring out updating the ckc timer. This now looks much nicer than having to call a helper from another function. While touching it we also make sure that env->ckc is updated even if the new value is -1ULL, for now it would not have been modified in that case. Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180629170520.13671-1-david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/kvm: indicate alignment in legacy_s390_alloc()David Hildenbrand
Let's do this for completeness reason, although we don't support e.g. PCDIMM/NVDIMM, which would use the alignment for placing the memory region in guest physical memory. But maybe someday we would want to support something like this - then we don't forget about this if allowing multiple allocations in legacy_s390_alloc(). Use the same alignment as we would set in qemu_anon_ram_alloc(). Our fixed address satisfies this alignment (1MB). This implicitly sets the alignment of the underlying memory region. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180628113817.30814-3-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/kvm: legacy_s390_alloc() only supports one allocationDavid Hildenbrand
We always allocate at a fixed address, a second allocation can therefore of course never work. We would simply overwrite mappings. This can e.g. happen in s390_memory_init(), if trying to allocate more than > 8TB. Let's just bail out, as there is no need for supporting it (legacy handling for z/VM). Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180628113817.30814-2-david@redhat.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/tcg: fix CPU hotplug with single-threaded TCGDavid Hildenbrand
run_on_cpu() doesn't seem to work reliably until the CPU has been fully created if the single-threaded TCG main loop is already running. Therefore, hotplugging a CPU under single-threaded TCG does currently not work. We should use the direct call instead of going via run_on_cpu(). So let's use run_on_cpu() for KVM only - KVM requires it due to the initial CPU reset ioctl. As a nice side effect, we get rid of the ifdef. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180627134410.4901-10-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/tcg: rearm the CKC timer during migrationDavid Hildenbrand
If the CPU data is migrated after the TOD clock, the CKC timer of a CPU is not rearmed. Let's rearm it when loading the CPU state. Introduce tcg-stub.c just like kvm-stub.c for tcg specific stubs. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180627134410.4901-9-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/tcg: implement SET CLOCKDavid Hildenbrand
This allows a guest to change its TOD. We already take care of updating all CKC timers from within S390TODClass. Use MO_ALIGN to load the operand manually - this will properly trigger a SPECIFICATION exception. Acked-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180627134410.4901-8-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/tcg: SET CLOCK COMPARATOR can clear CKC interruptsDavid Hildenbrand
Let's stop the timer and delete any pending CKC IRQ before doing anything else. While at it, add a comment why the check for ckc == -1ULL is needed. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180627134410.4901-7-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/tcg: properly implement the TODDavid Hildenbrand
Right now, each CPU has its own TOD. Especially, the TOD will differ based on creation time of a CPU - e.g. when hotplugging a CPU the times will differ quite a lot, resulting in stall warnings in the guest. Let's use a single TOD by implementing our new TOD device. Prepare it for TOD-clock epoch extension. Most importantly, whenever we set the TOD, we have to update the CKC timer. Introduce "tcg_s390x.h" just like "kvm_s390x.h" for tcg specific function declarations that should not go into cpu.h. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180627134410.4901-6-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/tcg: drop tod_basetimeDavid Hildenbrand
Never set to anything but 0. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180627134410.4901-5-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/tod: factor out TOD into separate deviceDavid Hildenbrand
Let's treat this like a separate device. TCG will have to store the actual state/time later on. Include cpu-qom.h in kvm_s390x.h (due to S390CPU) to compile tod-kvm.c. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180627134410.4901-4-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/kvm: pass values instead of pointers to kvm_s390_set_clock_*()David Hildenbrand
We are going to factor out the TOD into a separate device and use const pointers for device class functions where possible. We are passing right now ordinary pointers that should never be touched when setting the TOD. Let's just pass the values directly. Note that s390_set_clock() will be removed in a follow-on patch and therefore its calling convention is not changed. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180627134410.4901-3-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/tcg: avoid overflows in time2tod/tod2timeDavid Hildenbrand
Big values for the TOD/ns clock can result in some overflows that can be avoided. Not all overflows can be handled however, as the conversion either multiplies by 4.096 or divided by 4.096. Apply the trick used in the Linux kernel in arch/s390/include/asm/timex.h for tod_to_ns() and use the same trick also for the conversion in the other direction. Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180627134410.4901-2-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-07-02s390x/cpumodel: default enable bpb and ppa15 for z196 and laterChristian Borntraeger
Most systems and host kernels provide the necessary building blocks for bpb and ppa15. We can reverse the logic and default enable those features, while still allowing to disable it via cpu model. So let us add bpb and ppa15 to z196 and later default CPU model for the qemu 3.0 machine. (like -cpu z13). Older machine types (e.g. s390-ccw-virtio-2.12) will retain the old value and not provide those bits in the default model. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-Id: <20180626123830.18282-1-borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-06-27compiler: add a sizeof_field() macroStefan Hajnoczi
Determining the size of a field is useful when you don't have a struct variable handy. Open-coding this is ugly. This patch adds the sizeof_field() macro, which is similar to typeof_field(). Existing instances are updated to use the macro. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Message-id: 20180614164431.29305-1-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2018-06-18s390x/cpumodels: add z14 Model ZR1Christian Borntraeger
Introduce the new z14 Model ZR1 cpu model. Mostly identical to z14, only the cpu type differs (3906 vs. 3907) Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-Id: <20180613081819.147178-1-borntraeger@de.ibm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-06-04Merge remote-tracking branch 'remotes/rth/tags/tcg-next-pull-request' into ↵Peter Maydell
staging tcg-next queue # gpg: Signature made Sat 02 Jun 2018 00:12:42 BST # gpg: using RSA key 64DF38E8AF7E215F # gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" # Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F * remotes/rth/tags/tcg-next-pull-request: tcg: Pass tb and index to tcg_gen_exit_tb separately Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-01tcg: Pass tb and index to tcg_gen_exit_tb separatelyRichard Henderson
Do the cast to uintptr_t within the helper, so that the compiler can type check the pointer argument. We can also do some more sanity checking of the index argument. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-06-01Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* Linux header upgrade (Peter) * firmware.json definition (Laszlo) * IPMI migration fix (Corey) * QOM improvements (Alexey, Philippe, me) * Memory API cleanups (Jay, me, Tristan, Peter) * WHPX fixes and improvements (Lucian) * Chardev fixes (Marc-André) * IOMMU documentation improvements (Peter) * Coverity fixes (Peter, Philippe) * Include cleanup (Philippe) * -clock deprecation (Thomas) * Disable -sandbox unless CONFIG_SECCOMP (Yi Min Zhao) * Configurability improvements (me) # gpg: Signature made Fri 01 Jun 2018 17:42:13 BST # gpg: using RSA key BFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # 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: (56 commits) hw: make virtio devices configurable via default-configs/ hw: allow compiling out SCSI memory: Make operations using MemoryRegionIoeventfd struct pass by pointer. char: Remove unwanted crlf conversion qdev: Remove DeviceClass::init() and ::exit() qdev: Simplify the SysBusDeviceClass::init path hw/i2c: Use DeviceClass::realize instead of I2CSlaveClass::init hw/i2c/smbus: Use DeviceClass::realize instead of SMBusDeviceClass::init target/i386/kvm.c: Remove compatibility shim for KVM_HINTS_REALTIME Update Linux headers to 4.17-rc6 target/i386/kvm.c: Handle renaming of KVM_HINTS_DEDICATED scripts/update-linux-headers: Handle kernel license no longer being one file scripts/update-linux-headers: Handle __aligned_u64 virtio-gpu-3d: Define VIRTIO_GPU_CAPSET_VIRGL2 elsewhere gdbstub: Prevent fd leakage docs/interop: add "firmware.json" ipmi: Use proper struct reference for KCS vmstate vmstate: Add a VSTRUCT type tcg: remove softfloat from --disable-tcg builds qemu-options: Mark the non-functional -clock option as deprecated ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-01target: Do not include "exec/exec-all.h" if it is not necessaryPhilippe Mathieu-Daudé
Code change produced with: $ git grep '#include "exec/exec-all.h"' | \ cut -d: -f-1 | \ xargs egrep -L "(cpu_address_space_init|cpu_loop_|tlb_|tb_|GETPC|singlestep|TranslationBlock)" | \ xargs sed -i.bak '/#include "exec\/exec-all.h"/d' Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180528232719.4721-10-f4bug@amsat.org> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-31target: Do not include "exec/address-spaces.h" if it is not necessaryPhilippe Mathieu-Daudé
Code change produced with: $ git grep '#include "exec/address-spaces.h"' target | \ cut -d: -f-1 | \ xargs egrep -L "(get_system_|address_space_)" | \ xargs sed -i.bak '/#include "exec\/address-spaces.h"/d' Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180528232719.4721-4-f4bug@amsat.org> Acked-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-05-31Make address_space_access_valid() take a MemTxAttrs argumentPeter Maydell
As part of plumbing MemTxAttrs down to the IOMMU translate method, add MemTxAttrs as an argument to address_space_access_valid(). Its callers either have an attrs value to hand, or don't care and can use MEMTXATTRS_UNSPECIFIED. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180521140402.23318-6-peter.maydell@linaro.org
2018-05-18target/s390x: Honor CPU_DUMP_FPURichard Henderson
Also do not dump both "fpu" and "vector" registers as the former overlaps the latter. Cc: Alexander Graf <agraf@suse.de> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-17target/s390x: Remove floatX_maybe_silence_nan from conversionsRichard Henderson
This is now handled properly by the generic softfloat code. Cc: Alexander Graf <agraf@suse.de> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-14target/s390x: Fix brace Werror with clang 6.0.0Richard Henderson
The warning is target/s390x/misc_helper.c:209:21: error: suggest braces around initialization of subobject [-Werror,-Wmissing-braces] SysIB sysib = { 0 }; ^ {} While the original code is correct, and technically exactly correct as per ISO C89, both GCC and Clang support plain empty set of braces as an extension. Cc: Alexander Graf <agraf@suse.de> Cc: David Hildenbrand <david@redhat.com> Cc: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180512045950.12386-5-richard.henderson@linaro.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-05-14s390x: refactor reset/reipl handlingDavid Hildenbrand
Calling pause_all_vcpus()/resume_all_vcpus() from a VCPU thread might not be the best idea. As pause_all_vcpus() temporarily drops the qemu mutex, two parallel calls to pause_all_vcpus() can be active at a time, resulting in a deadlock. (either by two VCPUs or by the main thread and a VCPU) Let's handle it via the main loop instead, as suggested by Paolo. If we would have two parallel reset requests by two different VCPUs at the same time, the last one would win. We use the existing ipl device to handle it. The nice side effect is that we can get rid of reipl_requested. This change implies that all reset handling now goes via the common path, so "no-reboot" handling is now active for all kinds of reboots. Let's execute any CPU initialization code on the target CPU using run_on_cpu. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180424101859.10239-1-david@redhat.com> Acked-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-05-09target/s390x: convert to TranslatorOpsEmilio G. Cota
Note: I looked into dropping dc->do_debug. However, I don't see an easy way to do it given that TOO_MANY is also valid when we just translate more than max_insns. Thus, the check for do_debug in "case DISAS_PC_CC_UPDATED" would still need additional state to know whether or not we came from breakpoint_check. Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: David Hildenbrand <david@redhat.com> Cc: David Hildenbrand <david@redhat.com> Cc: Cornelia Huck <cohuck@redhat.com> Cc: Alexander Graf <agraf@suse.de> Cc: qemu-s390x@nongnu.org Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09target/s390x: convert to DisasContextBaseEmilio G. Cota
Notes: - Did not convert {num,max}_insns and is_jmp, since the corresponding code will go away in the next patch. - Avoided a checkpatch error in use_exit_tb. - As suggested by David, (1) Drop ctx.pc and use ctx.base.pc_next instead, and (2) Rename ctx.next_pc to ctx.pc_tmp and add a comment about it. Acked-by: Cornelia Huck <cohuck@redhat.com> Suggested-by: David Hildenbrand <david@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Cc: David Hildenbrand <david@redhat.com> Cc: Cornelia Huck <cohuck@redhat.com> Cc: Alexander Graf <agraf@suse.de> Cc: qemu-s390x@nongnu.org Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09target/s390x: convert to DisasJumpTypeEmilio G. Cota
The only non-trivial modification is the use of DISAS_TOO_MANY in the same way is used by the generic translation loop. Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Cc: David Hildenbrand <david@redhat.com> Cc: Cornelia Huck <cohuck@redhat.com> Cc: Alexander Graf <agraf@suse.de> Cc: qemu-s390x@nongnu.org Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-09target/s390x: avoid integer overflow in next_page PC checkEmilio G. Cota
If the PC is in the last page of the address space, next_page_start overflows to 0. Fix it. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Cc: Cornelia Huck <cohuck@redhat.com> Cc: Alexander Graf <agraf@suse.de> Cc: David Hildenbrand <david@redhat.com> Cc: qemu-s390x@nongnu.org Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-05-04Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2018-05-04' into ↵Peter Maydell
staging QAPI patches for 2018-05-04 # gpg: Signature made Fri 04 May 2018 08:59:16 BST # gpg: using RSA key 3870B400EB918653 # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" # Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653 * remotes/armbru/tags/pull-qapi-2018-05-04: qapi: deprecate CpuInfoFast.arch qapi: discriminate CpuInfoFast on SysEmuTarget, not CpuInfoArch qapi: change the type of TargetInfo.arch from string to enum SysEmuTarget qapi: add SysEmuTarget to "common.json" qapi: fill in CpuInfoFast.arch in query-cpus-fast qobject: Modify qobject_ref() to return obj qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREF qobject: use a QObjectBase_ struct qobject: Ensure base is at offset 0 qobject: Use qobject_to() instead of type cast Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-05-04qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREFMarc-André Lureau
Now that we can safely call QOBJECT() on QObject * as well as its subtypes, we can have macros qobject_ref() / qobject_unref() that work everywhere instead of having to use QINCREF() / QDECREF() for QObject and qobject_incref() / qobject_decref() for its subtypes. The replacement is mechanical, except I broke a long line, and added a cast in monitor_qmp_cleanup_req_queue_locked(). Unlike qobject_decref(), qobject_unref() doesn't accept void *. Note that the new macros evaluate their argument exactly once, thus no need to shout them. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180419150145.24795-4-marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Rebased, semantic conflict resolved, commit message improved] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-04-30s390x/kvm: cleanup calls to cpu_synchronize_state()David Hildenbrand
We have a call to cpu_synchronize_state() on every kvm_arch_handle_exit(). Let's remove the ones that are no longer needed. Remaining places (for s390x) are in - target/s390x/sigp.c, on the target CPU - target/s390x/cpu.c:s390_cpu_get_crash_info() While at it, use kvm_cpu_synchronize_state() instead of cpu_synchronize_state() in KVM code. (suggested by Thomas Huth) Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180412093521.2469-1-david@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-04-09s390x: load_psw() should only exchange the PSW for KVMDavid Hildenbrand
Let's simplify it a bit. On some weird circumstances we would have tried to recompute watchpoints when running under KVM. load_psw() is called from do_restart_interrupt() during a SIGP RESTART if the target CPU is STOPPED. Let's touch watchpoints only in the TCG case - where they are used for PER emulation. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180409113019.14568-3-david@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-04-09s390x/mmu: don't overwrite pending exception in mmu translateDavid Hildenbrand
If we already triggered another exception, don't overwrite it with a protection exception. Only applies to old KVM instances without the virtual memory access IOCTL in KVM. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180409113019.14568-2-david@redhat.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-04-09s390x/kvm: call cpu_synchronize_state() on every kvm_arch_handle_exit()David Hildenbrand
Manually having to use cpu_synchronize_state() is error prone. And as Christian Borntraeger discovered, e.g. handle_diag() is currently missing a cpu_synchronize_state(), as decode_basedisp_s() uses a general purpose register value internally. So let's do an overall cpu_synchronize_state(), which fixes at least the one mentioned BUG. We will clean up the superfluous cpu_synchronize_state() calls later. We now also call it (although maybe not neded) for - KVM_EXIT_S390_RESET -> s390_reipl_request() - KVM_EXIT_DEBUG -> kvm_arch_handle_debug_exit() - unmanagable/unimplemented intercepts - ICPT_CPU_STOP -> do_stop_interrupt() -> cpu gets halted - Scenarios where we inject an operation exception - handle_stsi() I don't think any of these are performance critical. Especially as we have all information directly contained in kvm_run, there are no additional IOCTLs to issue on modern kernels. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180406093552.13016-1-david@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-03-23s390x/cpumodel: fix feature groups and breakage of MSA8Christian Borntraeger
Since commit 46a99c9f73c7 ("s390x/cpumodel: model PTFF subfunctions for Multiple-epoch facility") -cpu help no longer shows the MSA8 feature group. Turns out that we forgot to add the new MEPOCH_PTFF group enum. Fixes: 46a99c9f73c7 ("s390x/cpumodel: model PTFF subfunctions for Multiple-epoch facility") Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2018-03-20Merge remote-tracking branch ↵Peter Maydell
'remotes/ehabkost/tags/machine-next-pull-request' into staging Machine and x86 queue, 2018-03-19 * cpu_model/cpu_type cleanups * x86: Fix on Intel Processor Trace CPUID checks # gpg: Signature made Mon 19 Mar 2018 20:07:14 GMT # gpg: using RSA key 2807936F984DC5A6 # gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" # Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF D1AA 2807 936F 984D C5A6 * remotes/ehabkost/tags/machine-next-pull-request: i386: Disable Intel PT if packets IP payloads have LIP values cpu: drop unnecessary NULL check and cpu_common_class_by_name() cpu: get rid of unused cpu_init() defines Use cpu_create(type) instead of cpu_init(cpu_model) cpu: add CPU_RESOLVING_TYPE macro tests: add machine 'none' with -cpu test nios2: 10m50_devboard: replace cpu_model with cpu_type Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-19qapi: Replace qobject_to_X(o) by qobject_to(X, o)Max Reitz
This patch was generated using the following Coccinelle script: @@ expression Obj; @@ ( - qobject_to_qnum(Obj) + qobject_to(QNum, Obj) | - qobject_to_qstring(Obj) + qobject_to(QString, Obj) | - qobject_to_qdict(Obj) + qobject_to(QDict, Obj) | - qobject_to_qlist(Obj) + qobject_to(QList, Obj) | - qobject_to_qbool(Obj) + qobject_to(QBool, Obj) ) and a bit of manual fix-up for overly long lines and three places in tests/check-qjson.c that Coccinelle did not find. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Alberto Garcia <berto@igalia.com> Message-Id: <20180224154033.29559-4-mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [eblake: swap order from qobject_to(o, X), rebase to master, also a fix to latent false-positive compiler complaint about hw/i386/acpi-build.c] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-19cpu: get rid of unused cpu_init() definesIgor Mammedov
cpu_init(cpu_model) were replaced by cpu_create(cpu_type) so no users are left, remove it. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> (ppc) Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1518000027-274608-6-git-send-email-imammedo@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-03-19cpu: add CPU_RESOLVING_TYPE macroIgor Mammedov
it will be used for providing to cpu name resolving class for parsing cpu model for system and user emulation code. Along with change add target to null-machine tests, so that when switch to CPU_RESOLVING_TYPE happens, it would ensure that null-machine usecase still works. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> (m68k) Acked-by: David Gibson <david@gibson.dropbear.id.au> (ppc) Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> (tricore) Message-Id: <1518000027-274608-4-git-send-email-imammedo@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> [ehabkost: Added macro to riscv too] Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-03-08target/s390x: Remove leading underscores from #definesThomas Huth
We should not use leading underscores followed by a capital letter in #defines since such identifiers are reserved by the C standard. For ASCE_ORIGIN, REGION_ENTRY_ORIGIN and SEGMENT_ENTRY_ORIGIN I also added parentheses around the value to silence an error message from checkpatch.pl. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1520227018-4061-1-git-send-email-thuth@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-03-02qapi: Empty out qapi-schema.jsonMarkus Armbruster
The previous commit improved compile time by including less of the generated QAPI headers. This is impossible for stuff defined directly in qapi-schema.json, because that ends up in headers that that pull in everything. Move everything but include directives from qapi-schema.json to new sub-module qapi/misc.json, then include just the "misc" shard where possible. It's possible everywhere, except: * monitor.c needs qmp-command.h to get qmp_init_marshal() * monitor.c, ui/vnc.c and the generated qapi-event-FOO.c need qapi-event.h to get enum QAPIEvent Perhaps we'll get rid of those some other day. Adding a type to qapi/migration.json now recompiles some 120 instead of 2300 out of 5100 objects. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-25-armbru@redhat.com> [eblake: rebase to master] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02Include less of the generated modular QAPI headersMarkus Armbruster
In my "build everything" tree, a change to the types in qapi-schema.json triggers a recompile of about 4800 out of 5100 objects. The previous commit split up qmp-commands.h, qmp-event.h, qmp-visit.h, qapi-types.h. Each of these headers still includes all its shards. Reduce compile time by including just the shards we actually need. To illustrate the benefits: adding a type to qapi/migration.json now recompiles some 2300 instead of 4800 objects. The next commit will improve it further. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-24-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> [eblake: rebase to master] Signed-off-by: Eric Blake <eblake@redhat.com>
generated by cgit v1.2.3 (git 2.26.2) at 2025-01-02 15:58:59 +0000