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2010-02-08Merge remote branch 'qemu-kvm/uq/master' into staging-tmpAnthony Liguori1-1/+10
2010-02-05remove two dead assignments in target-i386/translate.cPaolo Bonzini1-2/+0
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-02-03KVM: x86: Fix up misreported CPU featuresJan Kiszka1-1/+7
From qemu-kvm: Kernels before 2.6.30 misreported some essential CPU features via KVM_GET_SUPPORTED_CPUID. Fix them up. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2010-02-03KVM: Request setting of nmi_pending and sipi_vectorJan Kiszka1-0/+3
The final version of VCPU events in 2.6.33 will allow to skip nmi_pending and sipi_vector on KVM_SET_VCPU_EVENTS. For now let's write them unconditionally, which is unproblematic for upstream due to missing SMP support. Future version which enable SMP will write them only on reset. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-01-19kill regs_to_env and env_to_regsPaolo Bonzini1-8/+0
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-19remove dead code from target-i386/exec.hPaolo Bonzini1-48/+0
These are unused since edea5f0 (no need to define global registers in cpu-exec.c, 2008-05-10). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-13Add KVM paravirt cpuid leafGleb Natapov3-11/+89
Initialize KVM paravirt cpuid leaf and allow user to control guest visible PV features through -cpu flag. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-13x86: translate.c: remove dead assignmentAmit Shah1-2/+0
clang-analyzer points out a redundant assignment. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-11remove pending exception on vcpu reset.Gleb Natapov1-0/+1
Without this qemu can even start on kvm modules with events support since default value of exception_injected in zero and this is #DE exception. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-11MCE: Fix bug of IA32_MCG_STATUS after system resetHuang Ying1-0/+2
Now, if we inject a fatal MCE into guest OS, for example Linux, Linux will go panic and then reboot. But if we inject another MCE now, system will reset directly instead of go panic firstly, because MCG_STATUS.MCIP is set to 1 and not cleared after reboot. This is does not follow the behavior in real hardware. This patch fixes this via set env->mcg_status to 0 during system reset. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-03target-i386: Fix "call im" on x86_64 when executing 32-bit codeAurelien Jarno1-0/+2
Similarly to what is done in 32938e127f50a40844a0fb9c5abb8691aeeccf7e for "jmp im", trunc the immediate to 32-bit when not running in 64-bit mode. Reported-by: Kevin O'Connor <kevin@koconnor.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-24Intel CPUs starting from pentium have apicGleb Natapov1-1/+1
Intel CPUs starting from pentium have apic. Lets advertise it. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-18Revert "kvm: x86: Save/restore exception_index"Anthony Liguori1-1/+0
This reverts commit ebbc8a3d8e76d0402f8a08c10c0f32e24715d41d. As suggested by Jan Kiszka, "It was obsoleted by d1793b836f8f123b961c613de1bb1c0c185c84cc and now saves/restores a useless field." Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-18target-i386: Fix evaluation of DR7 registerJan Kiszka1-2/+2
hw_breakpoint_type and hw_breakpoint_len used the wrong index multiplier to extract type and len. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-18kvm: x86: Use separate exception_injected CPUState fieldJan Kiszka3-3/+5
Marcelo correctly remarked that there are usage conflicts between QEMU core code and KVM /wrt exception_index. So spend a separate field and also save/restore it properly. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-13target-i386: Update CPUID feature set for TCGAndre Przywara1-13/+12
The CPUID features QEMU presented to the guest were not up-to-date with QEMU's emulated feature set. Add the missing bits of recent (and not so recent) additions to QEMU's emulation engine. For stability reasons only the user mode usable bits are exposed for now, features like Monitor or CR8LEG are left out. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-12-12v2: properly save kvm system time msr registersGlauber Costa3-0/+20
Currently, the msrs involved in setting up pvclock are not saved over migration and/or save/restore. This patch puts their value in special fields in our CPUState, and deal with them using vmstate. kvm also has to account for it, by including them in the msr list for the ioctls. This is a backport from qemu-kvm.git [v2: sucessfully build without kerneldir ] Signed-off-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-12kvm: x86: Save/restore exception_indexJan Kiszka1-0/+1
As KVM now makes use of exception_index to keep pending exceptions, we have to save&restore this field as well. NOTE: We have to nail the arch-independent exception_index down to a certain bit width for proper vmstate processing, namely to 32 bit. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-07cpuid: Fix multicore setup on IntelAndre Przywara1-15/+31
The multicore CPUID code detects whether the guest is an Intel or an AMD CPU, because the Linux kernel is picky about the CmpLegacy bit. KVM by default passes through the host's vendor, which was not catched by the code. So fork out the vendor determining bits into a separate function to be used from both places and always get the real vendor. This fixes KVM's multicore setup on Intel CPUs. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Reported-by: Dietmar Maurer <dietmar@proxmox.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-07kvm: x86: Fix initial kvm_has_msr_starJan Kiszka1-2/+2
KVM_GET_MSR_INDEX_LIST returns -E2BIG when the provided space is too small for all MSRs. But this is precisely the error we trigger with the initial request in order to obtain that size. Do not fail in that case. This caused a subtle corruption of the guest state as MSR_STAR was not properly saved/restored. The corruption became visible with latest kvm optimizing the MSR updates. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03kvm: x86: Add support for VCPU event statesJan Kiszka3-0/+88
This patch extends the qemu-kvm state sync logic with support for KVM_GET/SET_VCPU_EVENTS, giving access to yet missing exception, interrupt and NMI states. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03kvm: x86: Fix merge artifact of f8d926e9 about mp_stateJan Kiszka1-4/+4
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-17kvm: x86: Refactor use of interrupt_bitmapJan Kiszka3-31/+21
Drop interrupt_bitmap from the cpustate and solely rely on the integer interupt_injected. This prepares us for the new injected-interrupt interface, which will deprecate the bitmap, while preserving compatibility. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-17kvm: Add arch reset handlerJan Kiszka1-0/+4
Will be required by succeeding changes. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-12kvm: Move KVM mp_state accessors to i386-specific codeHollis Blanchard1-0/+20
Unbreaks PowerPC and S390 KVM builds. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-07user: move CPU reset call to main.c for x86/PPC/SparcBlue Swirl1-3/+0
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-11-07v3: don't call reset functions on cpu initializationGlauber Costa1-0/+2
There is absolutely no need to call reset functions when initializing devices. Since we are already registering them, calling qemu_system_reset() should suffice. Actually, it is what happens when we reboot the machine, and using the same process instead of a special case semantics will even allow us to find bugs easier. Furthermore, the fact that we initialize things like the cpu quite early, leads to the need to introduce synchronization stuff like qemu_system_cond. This patch removes it entirely. All we need to do is call qemu_system_reset() only when we're already sure the system is up and running I tested it with qemu (with and without io-thread) and qemu-kvm, and it seems to be doing okay - although qemu-kvm uses a slightly different patch. [ v2: user mode still needs cpu_reset, so put it in ifdef. ] [ v3: leave qemu_system_cond for now. ] Signed-off-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-10-27vmstate: Add version arg to VMSTATE_SINGLE_TEST()Juan Quintela1-1/+1
This allows to define VMSTATE_SINGLE with VMSTATE_SINGLE_TEST Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-23target-i386: implement lzcnt emulationAndre Przywara3-14/+38
lzcnt is a AMD Phenom/Barcelona added instruction returning the number of leading zero bits in a word. As this is similar to the "bsr" instruction, reuse the existing code. There need to be some more changes, though, as lzcnt always returns a valid value (in opposite to bsr, which has a special case when the operand is 0). lzcnt is guarded by the ABM CPUID bit (Fn8000_0001:ECX_5). Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-10-18x86: add 'static' to please SparseBlue Swirl1-5/+5
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-10-06target-i386: fix ARPLLaurent Desnogues1-3/+7
The arpl implementation in target-i386/translate.c uses cpu_A0 temporary across a brcond op. This patch fixes that issue. Signed-off-by: Laurent Desnogues <laurent.desnogues@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-10-05target-i386: move recently added vmstate fields at the end of the structureAurelien Jarno1-4/+6
This reduce the impact on hosts that have addressing modes with limited offsets. Suggested by Laurent Desnogues. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2009-10-05x86: fix miss mergeJuan Quintela1-1/+2
There was a missmerge, and then we got a tail recursive call to cpu_post_load without case base :) Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05gdbstub: x86: Switch 64/32 bit registers dynamicallyJan Kiszka1-2/+5
Commit 56aebc891674cd2d07b3f64183415697be200084 changed gdbstub in way that debugging 32 or 16-bit guest code is no longer possible with qemu for x86_64 guest CPUs. Since that commit, qemu only provides registers sets for 64-bit, forcing current and foreseeable gdb to also switch its architecture to 64-bit. And this breaks if the inferior is 32 or 16 bit. No question, this is a gdb issue. But, as it was confirmed in several discusssions with gdb people, it is a non-trivial thing to fix. So until qemu finds a gdb version attach with a rework x86 support, we have to work around it by switching the register layout as the guest switches its execution mode between 16/32 and 64 bit. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: port cpu to vmstateJuan Quintela1-259/+240
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: factor out cpu_get/put_fpreg()Juan Quintela1-72/+137
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: factor out cpu_get/put_mttr_var()Juan Quintela1-4/+24
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: factor out cpu_get/put_xmm_reg()Juan Quintela1-4/+24
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: factor out cpu_pre/post_load()Juan Quintela1-18/+39
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: factor out cpu_pre_save()Juan Quintela1-21/+32
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: port segments to vmstateJuan Quintela1-8/+16
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: split MTRRVar unionJuan Quintela1-4/+6
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: split FPReg unionJuan Quintela1-8/+10
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: mcg_cap is never 0Juan Quintela1-12/+8
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: send mce_banks as an arrayJuan Quintela1-10/+4
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: mce_banks always have the same sizeJuan Quintela3-5/+4
mce_banks is always MCE_BANKS_DEF * 4 in size, value never change CC: Huang Ying <ying.huang@intel.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: add fpregs_format_vmstateJuan Quintela2-7/+6
Don't even ask, being able to load/save between 64<->80bit floats should be forbidden Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: add pending_irq_vmstate to the stateJuan Quintela2-9/+8
It is needed to save the interrupt_bitmap Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: add fptag_vmstate to the stateJuan Quintela2-9/+10
It is needed to store fptags Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05x86: fpus is uint16_t not unsigned intJuan Quintela2-9/+10
We save more that fpus on that 16 bits (fpstt), we need an additional field Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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