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| * | KVM: Use macro to iterate over vcpus.Gleb Natapov2009-09-10
| | | | | | | | | | | | | | | | | | | | | | | | [christian: remove unused variables on s390] Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: Introduce kvm_vcpu_is_bsp() function.Gleb Natapov2009-09-10
| | | | | | | | | | | | | | | | | | | | | Use it instead of open code "vcpu_id zero is BSP" assumption. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: MMU: Adjust pte accessors to explicitly indicate guest or shadow pteAvi Kivity2009-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | Since the guest and host ptes can have wildly different format, adjust the pte accessor names to indicate on which type of pte they operate on. No functional changes. Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: switch irq injection/acking data structures to irq_lockMarcelo Tosatti2009-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Protect irq injection/acking data structures with a separate irq_lock mutex. This fixes the following deadlock: CPU A CPU B kvm_vm_ioctl_deassign_dev_irq() mutex_lock(&kvm->lock); worker_thread() -> kvm_deassign_irq() -> kvm_assigned_dev_interrupt_work_handler() -> deassign_host_irq() mutex_lock(&kvm->lock); -> cancel_work_sync() [blocked] [gleb: fix ia64 path] Reported-by: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: Cache pdptrsAvi Kivity2009-09-10
| | | | | | | | | | | | | | | | | | | | | Instead of reloading the pdptrs on every entry and exit (vmcs writes on vmx, guest memory access on svm) extract them on demand. Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: cleanup io_device codeGregory Haskins2009-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We modernize the io_device code so that we use container_of() instead of dev->private, and move the vtable to a separate ops structure (theoretically allows better caching for multiple instances of the same ops structure) Signed-off-by: Gregory Haskins <ghaskins@novell.com> Acked-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: Allow PIT emulation without speaker portJan Kiszka2009-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The in-kernel speaker emulation is only a dummy and also unneeded from the performance point of view. Rather, it takes user space support to generate sound output on the host, e.g. console beeps. To allow this, introduce KVM_CREATE_PIT2 which controls in-kernel speaker port emulation via a flag passed along the new IOCTL. It also leaves room for future extensions of the PIT configuration interface. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: irqfdGregory Haskins2009-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | KVM provides a complete virtual system environment for guests, including support for injecting interrupts modeled after the real exception/interrupt facilities present on the native platform (such as the IDT on x86). Virtual interrupts can come from a variety of sources (emulated devices, pass-through devices, etc) but all must be injected to the guest via the KVM infrastructure. This patch adds a new mechanism to inject a specific interrupt to a guest using a decoupled eventfd mechnanism: Any legal signal on the irqfd (using eventfd semantics from either userspace or kernel) will translate into an injected interrupt in the guest at the next available interrupt window. Signed-off-by: Gregory Haskins <ghaskins@novell.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: Drop interrupt shadow when single stepping should be done only on VMXGleb Natapov2009-09-10
| | | | | | | | | | | | | | | | | | | | | | | | The problem exists only on VMX. Also currently we skip this step if there is pending exception. The patch fixes this too. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: fix cpuid E2BIG handling for extended request typesMark McLoughlin2009-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | If we run out of cpuid entries for extended request types we should return -E2BIG, just like we do for the standard request types. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: Use MSR names in place of addressJaswinder Singh Rajput2009-09-10
| | | | | | | | | | | | | | | | | | | | | Replace 0xc0010010 with MSR_K8_SYSCFG and 0xc0010015 with MSR_K7_HWCR. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: Add MCE supportHuang Ying2009-09-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The related MSRs are emulated. MCE capability is exported via extension KVM_CAP_MCE and ioctl KVM_X86_GET_MCE_CAP_SUPPORTED. A new vcpu ioctl command KVM_X86_SETUP_MCE is used to setup MCE emulation such as the mcg_cap. MCE is injected via vcpu ioctl command KVM_X86_SET_MCE. Extended machine-check state (MCG_EXT_P) and CMCI are not implemented. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * | KVM: Replace MSR_IA32_TIME_STAMP_COUNTER with MSR_IA32_TSC of msr-index.hJaswinder Singh Rajput2009-09-10
| |/ | | | | | | | | | | | | | | | | | | Use standard msr-index.h's MSR declaration. MSR_IA32_TSC is better than MSR_IA32_TIME_STAMP_COUNTER as it also solves 80 column issue. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | Merge commit 'v2.6.31-rc7' into x86/cleanupsIngo Molnar2009-08-24
|\| | | | | | | | | | | Merge reason: we were on -rc1 before - go up to -rc7 Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * KVM: x86: verify MTRR/PAT validityMarcelo Tosatti2009-08-05
| | | | | | | | | | | | | | | | Do not allow invalid memory types in MTRR/PAT (generating a #GP otherwise). Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
| * KVM: Fix KVM_GET_MSR_INDEX_LISTJan Kiszka2009-08-05
| | | | | | | | | | | | | | | | | | | | | | | | So far, KVM copied the emulated_msrs (only MSR_IA32_MISC_ENABLE) to a wrong address in user space due to broken pointer arithmetic. This caused subtle corruption up there (missing MSR_IA32_MISC_ENABLE had probably no practical relevance). Moreover, the size check for the user-provided kvm_msr_list forgot about emulated MSRs. Cc: stable@kernel.org Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | x86: Use printk_once()Marcin Slusarz2009-08-09
|/ | | | | | | Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: "H. Peter Anvin" <hpa@zytor.com> LKML-Reference: <1249847649-11631-6-git-send-email-marcin.slusarz@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* KVM: Ignore reads to K7 EVNTSEL MSRsAmit Shah2009-06-28
| | | | | | | | | | | | | In commit 7fe29e0faacb650d31b9e9f538203a157bec821d we ignored the reads to the P6 EVNTSEL MSRs. That fixed crashes on Intel machines. Ignore the reads to K7 EVNTSEL MSRs as well to fix this on AMD hosts. This fixes Kaspersky antivirus crashing Windows guests on AMD hosts. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Disable CR8 intercept if tpr patching is activeGleb Natapov2009-06-10
| | | | | Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Do not migrate pending software interrupts.Gleb Natapov2009-06-10
| | | | | | | | | | | INTn will be re-executed after migration. If we wanted to migrate pending software interrupt we would need to migrate interrupt type and instruction length too, but we do not have all required info on SVM, so SVM->VMX migration would need to re-execute INTn anyway. To make it simple never migrate pending soft interrupt. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Always request IRQ/NMI window if an interrupt is pendingGleb Natapov2009-06-10
| | | | | | | Currently they are not requested if there is pending exception. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Do not re-execute INTn instruction.Gleb Natapov2009-06-10
| | | | | | | | Re-inject event instead. This is what Intel suggest. Also use correct instruction length when re-injecting soft fault/interrupt. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Remove irq_pending bitmapGleb Natapov2009-06-10
| | | | | | | | | Only one interrupt vector can be injected from userspace irqchip at any given time so no need to store it in a bitmap. Put it into interrupt queue directly. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Do not allow interrupt injection from userspace if there is a pending ↵Gleb Natapov2009-06-10
| | | | | | | | | event. The exception will immediately close the interrupt window. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86: check for cr3 validity in mmu_alloc_rootsMarcelo Tosatti2009-06-10
| | | | | | | | Verify the cr3 address stored in vcpu->arch.cr3 points to an existant memslot. If not, inject a triple fault. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: MMU: protect kvm_mmu_change_mmu_pages with mmu_lockMarcelo Tosatti2009-06-10
| | | | | | | | | | | kvm_handle_hva, called by MMU notifiers, manipulates mmu data only with the protection of mmu_lock. Update kvm_mmu_change_mmu_pages callers to take mmu_lock, thus protecting against kvm_handle_hva. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Deal with interrupt shadow state for emulated instructionsGlauber Costa2009-06-10
| | | | | | | | | | | | | | | | | | We currently unblock shadow interrupt state when we skip an instruction, but failing to do so when we actually emulate one. This blocks interrupts in key instruction blocks, in particular sti; hlt; sequences If the instruction emulated is an sti, we have to block shadow interrupts. The same goes for mov ss. pop ss also needs it, but we don't currently emulate it. Without this patch, I cannot boot gpxe option roms at vmx machines. This is described at https://bugzilla.redhat.com/show_bug.cgi?id=494469 Signed-off-by: Glauber Costa <glommer@redhat.com> CC: H. Peter Anvin <hpa@zytor.com> CC: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Replace ->drop_interrupt_shadow() by ->set_interrupt_shadow()Glauber Costa2009-06-10
| | | | | | | | | | | | This patch replaces drop_interrupt_shadow with the more general set_interrupt_shadow, that can either drop or raise it, depending on its parameter. It also adds ->get_interrupt_shadow() for future use. Signed-off-by: Glauber Costa <glommer@redhat.com> CC: H. Peter Anvin <hpa@zytor.com> CC: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: use smp_send_reschedule in kvm_vcpu_kickMarcelo Tosatti2009-06-10
| | | | | | | | | | | | | | | | | | | KVM uses a function call IPI to cause the exit of a guest running on a physical cpu. For virtual interrupt notification there is no need to wait on IPI receival, or to execute any function. This is exactly what the reschedule IPI does, without the overhead of function IPI. So use it instead of smp_call_function_single in kvm_vcpu_kick. Also change the "guest_mode" variable to a bit in vcpu->requests, and use that to collapse multiple IPI's that would be issued between the first one and zeroing of guest mode. This allows kvm_vcpu_kick to called with interrupts disabled. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Update cpuid 1.ecx reportingAvi Kivity2009-06-10
| | | | Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Add AMD cpuid bit: cr8_legacy, abm, misaligned sse, sse4, 3dnow prefetchAvi Kivity2009-06-10
| | | | Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Fix cpuid feature misreportingAvi Kivity2009-06-10
| | | | | | | | MTRR, PAT, MCE, and MCA are all supported (to some extent) but not reported. Vista requires these features, so if userspace relies on kernel cpuid reporting, it loses support for Vista. Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Drop request_nmi from statsJan Kiszka2009-06-10
| | | | | | | | The stats entry request_nmi is no longer used as the related user space interface was dropped. So clean it up. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Replace get_mt_mask_shift with get_mt_maskSheng Yang2009-06-10
| | | | | | | | | | Shadow_mt_mask is out of date, now it have only been used as a flag to indicate if TDP enabled. Get rid of it and use tdp_enabled instead. Also put memory type logical in kvm_x86_ops->get_mt_mask(). Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Wake up waitqueue before calling get_cpu()Jan Blunck2009-06-10
| | | | | | | | | | This moves the get_cpu() call down to be called after we wake up the waiters. Therefore the waitqueue locks can safely be rt mutex. Signed-off-by: Jan Blunck <jblunck@suse.de> Signed-off-by: Sven-Thorsten Dietrich <sven@thebigcorporation.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Get rid of get_irq() callbackGleb Natapov2009-06-10
| | | | | | | | | It just returns pending IRQ vector from the queue for VMX/SVM. Get IRQ directly from the queue before migration and put it back after. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Fix userspace IRQ chip migrationGleb Natapov2009-06-10
| | | | | | | | Re-put pending IRQ vector into interrupt_bitmap before migration. Otherwise it will be lost if migration happens in the wrong time. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: SVM: Add NMI injection supportGleb Natapov2009-06-10
| | | | | Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Remove inject_pending_vectors() callbackGleb Natapov2009-06-10
| | | | | | | It is the same as inject_pending_irq() for VMX/SVM now. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Remove exception_injected() callback.Gleb Natapov2009-06-10
| | | | | | | It always return false for VMX/SVM now. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Use kvm_arch_interrupt_allowed() instead of checking ↵Gleb Natapov2009-06-10
| | | | | | | | | interrupt_window_open directly kvm_arch_interrupt_allowed() also checks IF so drop the check. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: Consolidate userspace and kernel interrupt injection for VMXGleb Natapov2009-06-10
| | | | | | | | Use the same callback to inject irq/nmi events no matter what irqchip is in use. Only from VMX for now. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Make kvm_cpu_(has|get)_interrupt() work for userspace irqchip tooGleb Natapov2009-06-10
| | | | | | | At the vector level, kernel and userspace irqchip are fairly similar. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86: check for cr3 validity in ioctl_set_sregsMarcelo Tosatti2009-06-10
| | | | | | | | | | | | | | | | | | | | | | | | | Matt T. Yourst notes that kvm_arch_vcpu_ioctl_set_sregs lacks validity checking for the new cr3 value: "Userspace callers of KVM_SET_SREGS can pass a bogus value of cr3 to the kernel. This will trigger a NULL pointer access in gfn_to_rmap() when userspace next tries to call KVM_RUN on the affected VCPU and kvm attempts to activate the new non-existent page table root. This happens since kvm only validates that cr3 points to a valid guest physical memory page when code *inside* the guest sets cr3. However, kvm currently trusts the userspace caller (e.g. QEMU) on the host machine to always supply a valid page table root, rather than properly validating it along with the rest of the reloaded guest state." http://sourceforge.net/tracker/?func=detail&atid=893831&aid=2687641&group_id=180599 Check for a valid cr3 address in kvm_arch_vcpu_ioctl_set_sregs, triple fault in case of failure. Cc: stable@kernel.org Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Replace kvmclock open-coded get_cpu_var() with the real thingAvi Kivity2009-06-10
| | | | | | Suggested by Ingo Molnar. Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: Add new mode of instruction emulation: skipGleb Natapov2009-06-10
| | | | | | | | In the new mode instruction is decoded, but not executed. The EIP is moved to point after the instruction. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: MMU: remove global page optimization logicMarcelo Tosatti2009-06-10
| | | | | | | | Complexity to fix it not worthwhile the gains, as discussed in http://article.gmane.org/gmane.comp.emulators.kvm.devel/28649. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Fix unneeded instruction skipping during task switching.Gleb Natapov2009-06-10
| | | | | | | | | | There is no need to skip instruction if the reason for a task switch is a task gate in IDT and access to it is caused by an external even. The problem is currently solved only for VMX since there is no reliable way to skip an instruction in SVM. We should emulate it instead. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Fix task switch back link handling.Gleb Natapov2009-06-10
| | | | | | | Back link is written to a wrong TSS now. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Use rsvd_bits_mask in load_pdptrs()Dong, Eddie2009-06-10
| | | | | | | Also remove bit 5-6 from rsvd_bits_mask per latest SDM. Signed-off-by: Eddie Dong <Eddie.Dong@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-13 04:33:11 -0400