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2012-10-30i386: kvm: kvm_arch_get_supported_cpuid: move R_EDX hack outside of for loopEduardo Habkost1-13/+18
The for loop will become a separate function, so clean it up so it can become independent from the bit hacking for R_EDX. No behavior change[1], just code movement. [1] Well, only if the kernel returned CPUID leafs 1 or 0x80000001 as unsupported, but there's no kernel version that does that. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-10-31cpus: Pass CPUState to cpu_is_stopped()Andreas Färber1-2/+2
CPUArchState is no longer needed there. Also change the return type to bool. Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-10-31cpus: Pass CPUState to qemu_cpu_is_self()Andreas Färber1-2/+4
Change return type to bool, move to include/qemu/cpu.h and add documentation. Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Igor Mammedov <imammedo@redhat.com> [AF: Updated new caller qemu_in_vcpu_thread()]
2012-10-23Rename target_phys_addr_t to hwaddrAvi Kivity1-3/+3
target_phys_addr_t is unwieldly, violates the C standard (_t suffixes are reserved) and its purpose doesn't match the name (most target_phys_addr_t addresses are not target specific). Replace it with a finger-friendly, standards conformant hwaddr. Outstanding patchsets can be fixed up with the command git rebase -i --exec 'find -name "*.[ch]" | xargs s/target_phys_addr_t/hwaddr/g' origin Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-30i386: kvm: use a #define for the set of alias feature bitsEduardo Habkost1-1/+1
Instea of using a hardcoded hex constant, define CPUID_EXT2_AMD_ALIASES as the set of CPUID[8000_0001].EDX bits that on AMD are the same as the bits of CPUID[1].EDX. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-By: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Don Slutz <Don@CloudSwitch.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-30i386: kvm: bit 10 of CPUID[8000_0001].EDX is reservedEduardo Habkost1-1/+1
Bit 10 of CPUID[8000_0001].EDX is not defined as an alias of CPUID[1].EDX[10], so do not duplicate it on kvm_arch_get_supported_cpuid(). Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-By: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Don Slutz <Don@CloudSwitch.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-09-10kvm: i386: Add services required for PCI device assignmentJan Kiszka1-0/+141
These helpers abstract the interaction of upcoming pci-assign with the KVM kernel services. Put them under i386 only as other archs will implement device pass-through via VFIO and not this classic interface. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-08-29kvm: get/set PV EOI MSRMichael S. Tsirkin1-0/+13
Support get/set of new PV EOI MSR, for migration. Add an optional section for MSR value - send it out in case MSR was changed from the default value (0). Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-08-09kvm: Decouple 'GSI routing' from 'kernel irqchip'Peter Maydell1-1/+2
Don't assume having an in-kernel irqchip means that GSI routing is enabled. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-08-09kvm: Decouple 'MSI routing via irqfds' from 'kernel irqchip'Peter Maydell1-1/+3
Decouple another x86-specific assumption about what irqchips imply. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-08-09kvm: Decouple 'irqfds usable' from 'kernel irqchip'Peter Maydell1-0/+4
Instead of assuming that we can use irqfds if and only if kvm_irqchip_in_kernel(), add a bool to the KVMState which indicates this, and is set only on x86 and only if the irqchip is in the kernel. The kernel documentation implies that the only thing you need to use KVM_IRQFD is that KVM_CAP_IRQFD is advertised, but this seems to be untrue. In particular the kernel does not (alas) return a sensible error if you try to set up an irqfd when you haven't created an irqchip. If it did we could remove all this nonsense and let the kernel return the error code. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-08-09kvm: Move kvm_allows_irq0_override() to target-i386, fix return typePeter Maydell1-0/+6
kvm_allows_irq0_override() is a totally x86 specific concept: move it to the target-specific source file where it belongs. This means we need a new header file for the prototype: kvm_i386.h, in line with the existing kvm_ppc.h. While we are moving it, fix the return type to be 'bool' rather than 'int'. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-08-01target-i386: move cpu halted decision into x86_cpu_resetIgor Mammedov1-1/+3
MP initialization protocol differs between cpu families, and for P6 and onward models it is up to CPU to decide if it will be BSP using this protocol, so try to model this. However there is no point in implementing MP initialization protocol in qemu. Thus first CPU is always marked as BSP. This patch: - moves decision to designate BSP from board into cpu, making cpu self-sufficient in this regard. Later it will allow to cleanup hw/pc.c and remove cpu_reset and wrappers from there. - stores flag that CPU is BSP in IA32_APIC_BASE to model behavior described in Inted SDM vol 3a part 1 chapter 8.4.1 - uses MSR_IA32_APICBASE_BSP flag in apic_base for checking if cpu is BSP patch is based on Jan Kiszka's proposal: http://thread.gmane.org/gmane.comp.emulators.qemu/100806 Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-07-10apic: Defer interrupt updates to VCPU threadJan Kiszka1-0/+4
KVM performs TPR raising asynchronously to QEMU, specifically outside QEMU's global lock. When an interrupt is injected into the APIC and TPR is checked to decide if this can be delivered, a stale TPR value may be used, causing spurious interrupts in the end. Fix this by deferring apic_update_irq to the context of the target VCPU. We introduce a new interrupt flag for this, CPU_INTERRUPT_POLL. When it is set, the VCPU calls apic_poll_irq before checking for further pending interrupts. To avoid special-casing KVM, we also implement this logic for TCG mode. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-07-03kvm: expose tsc deadline timer feature to guestLiu, Jinsong1-0/+5
This patch exposes tsc deadline timer feature to guest if 1). in-kernel irqchip is used, and 2). kvm has emulated tsc deadline timer, and 3). user authorize the feature exposing via -cpu or +/- tsc-deadline Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-06-04target-i386: Pass X86CPU to do_cpu_{init,sipi}()Andreas Färber1-2/+4
Allows to use cpu_reset() in place of cpu_state_reset(). Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
2012-03-14target-i386: Don't overuse CPUStateAndreas Färber1-38/+38
Scripted conversion: sed -i "s/CPUState/CPUX86State/g" target-i386/*.[hc] sed -i "s/#define CPUX86State/#define CPUState/" target-i386/cpu.h Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Anthony Liguori <aliguori@us.ibm.com>
2012-03-07kvm: fill in padding to help valgrindMichael S. Tsirkin1-0/+6
valgrind warns about padding fields which are passed to vcpu ioctls uninitialized. This is not an error in practice because kvm ignored padding. Since the ioctls in question are off data path and the cost is zero anyway, initialize padding to 0 to suppress these errors. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-02-18target-i386: Add infrastructure for reporting TPR MMIO accessesJan Kiszka1-2/+23
This will allow the APIC core to file a TPR access report. Depending on the accelerator and kernel irqchip mode, it will either be delivered right away or queued for later reporting. In TCG mode, we can restart the triggering instruction and can therefore forward the event directly. KVM does not allows us to restart, so we postpone the delivery of events recording in the user space APIC until the current instruction is completed. Note that KVM without in-kernel irqchip will report the address after the instruction that triggered the access. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2012-02-16kvm: Synchronize cpu state in kvm_arch_stop_on_emulation_error()Gleb Natapov1-0/+1
Call to kvm_cpu_synchronize_state() is missing. kvm_arch_stop_on_emulation_error may look at outdated registers here. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com> Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-02-08kvm: Implement kvm_irqchip_in_kernel like kvm_enabledJan Kiszka1-2/+2
To both avoid that kvm_irqchip_in_kernel always has to be paired with kvm_enabled and that the former ends up in a function call, implement it like the latter. This means keeping the state in a global variable and defining kvm_irqchip_in_kernel as a preprocessor macro. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-02-08kvm: Allow to set shadow MMU sizeJan Kiszka1-0/+13
Introduce the KVM-specific machine option kvm_shadow_mem. It allows to set a custom shadow MMU size for the virtual machine. This is useful for stress testing e.g. Only x86 supports this for now, but it is in principle a generic concept for all targets with shadow MMUs. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-01-19kvm: x86: Add user space part for in-kernel APICJan Kiszka1-0/+38
This introduces the alternative APIC device which makes use of KVM's in-kernel device model. External NMI injection via LINT1 is emulated by checking the current state of the in-kernel APIC, only injecting a NMI into the VCPU if LINT1 is unmasked and configured to DM_NMI. MSI is not yet supported, so we disable this when the in-kernel model is in use. CC: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-01-19kvm: Introduce core services for in-kernel irqchip supportJan Kiszka1-0/+11
Add the basic infrastructure to active in-kernel irqchip support, inject interrupts into these models, and maintain IRQ routes. Routing is optional and depends on the host arch supporting KVM_CAP_IRQ_ROUTING. When it's not available on x86, we looe the HPET as we can't route GSI0 to IOAPIC pin 2. In-kernel irqchip support will once be controlled by the machine property 'kernel_irqchip', but this is not yet wired up. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
2012-01-19hyper-v: initialize Hyper-V CPUID leaves.Vadim Rozenfeld1-2/+63
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-01-03Merge remote-tracking branch 'qemu-kvm/memory/page_desc' into stagingAnthony Liguori1-4/+3
* qemu-kvm/memory/page_desc: (22 commits) Remove cpu_get_physical_page_desc() sparc: avoid cpu_get_physical_page_desc() virtio-balloon: avoid cpu_get_physical_page_desc() vhost: avoid cpu_get_physical_page_desc() kvm: avoid cpu_get_physical_page_desc() memory: remove CPUPhysMemoryClient xen: convert to MemoryListener API memory: temporarily add memory_region_get_ram_addr() xen, vga: add API for registering the framebuffer vhost: convert to MemoryListener API kvm: convert to MemoryListener API kvm: switch kvm slots to use host virtual address instead of ram_addr_t memory: add API for observing updates to the physical memory map memory: replace cpu_physical_sync_dirty_bitmap() with a memory API framebuffer: drop use of cpu_physical_sync_dirty_bitmap() loader: remove calls to cpu_get_physical_page_desc() framebuffer: drop use of cpu_get_physical_page_desc() memory: introduce memory_region_find() memory: add memory_region_is_logging() memory: add memory_region_is_rom() ...
2011-12-22kvm: x86: Drop redundant apic base and tpr update from kvm_get_sregsJan Kiszka1-3/+2
The latter was already commented out, the former is redundant as well. We always get the latest changes after return from the guest via kvm_arch_post_run. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-22kvm: x86: Avoid runtime allocation of xsave bufferJan Kiszka1-8/+7
Keep a per-VCPU xsave buffer for kvm_put/get_xsave instead of continuously allocating and freeing it on state sync. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-22kvm: x86: Use symbols for all xsave fieldJan Kiszka1-6/+8
Field 0 (FCW+FSW) and 1 (FTW+FOP) were hard-coded so far. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-12-20kvm: switch kvm slots to use host virtual address instead of ram_addr_tAvi Kivity1-4/+3
This simplifies a later switch to the memory API in slot management. Signed-off-by: Avi Kivity <avi@redhat.com>
2011-11-17Fix typo: runnning -> runningVagrant Cascadian1-1/+1
One n too many for running, need we say more. Signed-Off-By: Vagrant Cascadian <vagrant@freegeek.org> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-10-24i386: wire up MSR_IA32_MISC_ENABLEAvi Kivity1-0/+15
It's needed for its default value - bit 0 specifies that "rep movs" is good enough for memcpy, and Linux may use a slower memcpu if it is not set, depending on cpu family/model. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-10-24kvm: support TSC deadline MSR with subsectionLiu, Jinsong1-0/+14
KVM add emulation of lapic tsc deadline timer for guest. This patch is co-operation work at qemu side. Use subsections to save/restore the field (mtosatti). Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-10-24Revert "kvm: support TSC deadline MSR"Marcelo Tosatti1-14/+0
This reverts commit bfc2455ddbb41148494a084d15777e6bed7533c3. New patch with subsections will follow. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-10-03kvm: support TSC deadline MSRLiu, Jinsong1-0/+14
KVM add emulation of lapic tsc deadline timer for guest. This patch is co-operation work at qemu side. Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-09-15Drop the vm_running global variableLuiz Capitulino1-1/+1
Use runstate_is_running() instead, which is introduced by this commit. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-15Replace the VMSTOP macros with a proper state typeLuiz Capitulino1-1/+1
Today, when notifying a VM state change with vm_state_notify(), we pass a VMSTOP macro as the 'reason' argument. This is not ideal because the VMSTOP macros tell why qemu stopped and not exactly what the current VM state is. One example to demonstrate this problem is that vm_start() calls vm_state_notify() with reason=0, which turns out to be VMSTOP_USER. This commit fixes that by replacing the VMSTOP macros with a proper state type called RunState. Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
2011-09-10kvm: remove unnecessary assignmentsBlue Swirl1-1/+1
Avoid these warnings from clang analyzer: /src/qemu/target-i386/kvm.c:772:5: warning: Value stored to 'cwd' is never read cwd = swd = twd = 0; /src/qemu/target-i386/kvm.c:772:11: warning: Although the value stored to 'swd' is used in the enclosing expression, the value is never actually read from 'swd' cwd = swd = twd = 0; Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-09-03Use new macro QEMU_PACKED for packed structuresStefan Weil1-1/+1
Most changes were made using these commands: git grep -la '__attribute__((packed))'|xargs perl -pi -e 's/__attribute__\(\(packed\)\)/QEMU_PACKED/' git grep -la '__attribute__ ((packed))'|xargs perl -pi -e 's/__attribute__ \(\(packed\)\)/QEMU_PACKED/' git grep -la '__attribute__((__packed__))'|xargs perl -pi -e 's/__attribute__\(\(__packed__\)\)/QEMU_PACKED/' git grep -la '__attribute__ ((__packed__))'|xargs perl -pi -e 's/__attribute__ \(\(__packed__\)\)/QEMU_PACKED/' git grep -la '__attribute((packed))'|xargs perl -pi -e 's/__attribute\(\(packed\)\)/QEMU_PACKED/' Whitespace in linux-user/syscall_defs.h was fixed manually to avoid warnings from scripts/checkpatch.pl. Manual changes were also applied to hw/pc.c. I did not fix indentation with tabs in block/vvfat.c. The patch will show 4 errors with scripts/checkpatch.pl. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-25Fix up some style nits of last uq/master mergeJan Kiszka1-2/+3
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-08-20Use glib memory allocation and free functionsAnthony Liguori1-10/+10
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-05Remove #ifdef KVM_CAP_TSC_CONTROLMarcelo Tosatti1-2/+0
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-08-05qemu-x86: Set tsc_khz in kvm when supportedJoerg Roedel1-1/+17
Make use of the KVM_TSC_CONTROL feature if available. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-06-20KVM: Fix XSAVE feature bit enumerationAndre Przywara1-1/+4
When iterating through the XSAVE feature enumeration CPUID leaf (0xD) we should not stop at the first zero EAX, but instead keep scanning since there are gaps in the enumeration (ECX=1 for instance). This fixes the proper usage of AVX in KVM guests. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-06-20kvm: x86: Pass KVMState to kvm_arch_get_supported_cpuidJan Kiszka1-15/+15
kvm_arch_get_supported_cpuid checks for global cpuid restrictions, it does not require any CPUState reference. Changing its interface allows to call it before any VCPU is initialized. CC: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-06-20kvm: x86: Drop KVM_CAP build dependenciesJan Kiszka1-64/+3
No longer needed with accompanied kernel headers. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-06-20kvm: Drop CONFIG_KVM_PARAJan Kiszka1-25/+1
The kvm_para.h header is now always available. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-06-19kvm: x86: Save/restore FPU OP, IP and DPJan Kiszka1-5/+15
These FPU states are properly maintained by KVM but not yet by TCG. So far we unconditionally set them to 0 in the guest which may cause state corruptions, though not with modern guests. To avoid breaking backward migration, use a conditional subsection that is only written if any of the three fields is non-zero. The guest's FNINIT clears them frequently, and cleared IA32_MISC_ENABLE MSR[2] reduces the probability of non-zero values further so that this subsection is not expected to restrict migration in any common scenario. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
2011-06-14kvm: Add CPUID support for VIA CPUbrillywu@viatech.com.cn1-0/+15
When KVM is running on VIA CPU with host cpu's model, the feautures of VIA CPU will be passed into kvm guest by calling the CPUID instruction for Centaur. Signed-off-by: BrillyWu<brillywu@viatech.com.cn> Signed-off-by: KaryJin<karyjin@viatech.com.cn> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2011-05-02kvm: use qemu_free consistentlyPaolo Bonzini1-1/+1
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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