aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/kvm
Commit message (Collapse)AuthorAge
...
* 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: SVM: Don't reinject event that caused a task switchGleb Natapov2009-06-10
| | | | | | | | If a task switch caused by an event remove it from the event queue. VMX already does that. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: SVM: Fix cross vendor migration issue in segment segment descriptorAndre Przywara2009-06-10
| | | | | | | | | | On AMD CPUs sometimes the DB bit in the stack segment descriptor is left as 1, although the whole segment has been made unusable. Clear it here to pass an Intel VMX entry check when cross vendor migrating. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: fix apic_debug instancesGlauber Costa2009-06-10
| | | | | | | | | Apparently nobody turned this on in a while... setting apic_debug to something compilable, generates some errors. This patch fixes it. Signed-off-by: Glauber Costa <glommer@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Enable snooping control for supported hardwareSheng Yang2009-06-10
| | | | | | | | | | | | | | | | Memory aliases with different memory type is a problem for guest. For the guest without assigned device, the memory type of guest memory would always been the same as host(WB); but for the assigned device, some part of memory may be used as DMA and then set to uncacheable memory type(UC/WC), which would be a conflict of host memory type then be a potential issue. Snooping control can guarantee the cache correctness of memory go through the DMA engine of VT-d. [avi: fix build on ia64] Signed-off-by: Sheng Yang <sheng@linux.intel.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: Get rid of arch.interrupt_window_open & arch.nmi_window_openGleb Natapov2009-06-10
| | | | | | | They are recalculated before each use anyway. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Do not report TPR write to userspace if new value bigger or equal to a ↵Gleb Natapov2009-06-10
| | | | | | | | | previous one. Saves many exits to userspace in a case of IRQ chip in userspace. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: sync_lapic_to_cr8() should always sync cr8 to V_TPRGleb Natapov2009-06-10
| | | | | | | Even if IRQ chip is in userspace. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: Remove kvm_push_irq()Gleb Natapov2009-06-10
| | | | | | | No longer used. 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: SVM: Coalesce userspace/kernel irqchip interrupt injection logicGleb Natapov2009-06-10
| | | | | | | | | | | | | | Start to use interrupt/exception queues like VMX does. This also fix the bug that if exit was caused by a guest internal exception access to IDT the exception was not reinjected. Use EVENTINJ to inject interrupts. Use VINT only for detecting when IRQ windows is open again. EVENTINJ ensures the interrupt is injected immediately and not delayed. 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: Cleanup vmx_intr_assist()Gleb Natapov2009-06-10
| | | | | 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: MMU: Fix auditing codeJan Kiszka2009-06-10
| | | | | | | | Fix build breakage of hpa lookup in audit_mappings_page. Moreover, make this function robust against shadow_notrap_nonpresent_pte entries. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.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: SVM: Skip instruction on a task switch only when appropriateGleb Natapov2009-06-10
| | | | | | | | | If a task switch was initiated because off a task gate in IDT and IDT was accessed because of an external even the instruction should not be skipped. Signed-off-by: Gleb Natapov <gleb@redhat.com> 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: x86 emulator: Decode soft interrupt instructionsGleb Natapov2009-06-10
| | | | | | | Do not emulate them yet. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: Completely decode in/out at decoding stageGleb Natapov2009-06-10
| | | | | Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: Add unsigned byte immediate decodeGleb Natapov2009-06-10
| | | | | | | | Extend "Source operand type" opcode description field to 4 bites to accommodate new option. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: Complete decoding of call near in decode stageGleb Natapov2009-06-10
| | | | | Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: Complete short/near jcc decoding in decode stageGleb Natapov2009-06-10
| | | | | Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: Complete ljmp decoding at decode stageGleb Natapov2009-06-10
| | | | | Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: Add lcall decodingGleb Natapov2009-06-10
| | | | | | | No emulation yet. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: Add decoding of 16bit second immediate argumentGleb Natapov2009-06-10
| | | | | | | Such as segment number in lcall/ljmp 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: PIT: fix count read and mode 0 handlingMarcelo Tosatti2009-06-10
| | | | | | | | | | | | | | Commit 46ee278652f4cbd51013471b64c7897ba9bcd1b1 causes Solaris 10 to hang on boot. Assuming that PIT counter reads should return 0 for an expired timer is wrong: when it is active, the counter never stops (see comment on __kpit_elapsed). Also arm a one shot timer for mode 0. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: x86 emulator: fix call near emulationGleb Natapov2009-06-10
| | | | | | | | The length of pushed on to the stack return address depends on operand size not address size. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: MMU: Discard reserved bits checking on PDE bit 7-8Sheng Yang2009-06-10
| | | | | | | | | | | | | | | | 1. It's related to a Linux kernel bug which fixed by Ingo on 07a66d7c53a538e1a9759954a82bb6c07365eff9. The original code exists for quite a long time, and it would convert a PDE for large page into a normal PDE. But it fail to fit normal PDE well. With the code before Ingo's fix, the kernel would fall reserved bit checking with bit 8 - the remaining global bit of PTE. So the kernel would receive a double-fault. 2. After discussion, we decide to discard PDE bit 7-8 reserved checking for now. For this marked as reserved in SDM, but didn't checked by the processor in fact... Signed-off-by: Sheng Yang <sheng@linux.intel.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: VMX: Do not zero idt_vectoring_info in vmx_complete_interrupts().Gleb Natapov2009-06-10
| | | | | | | | | | We will need it later in task_switch(). Code in handle_exception() is dead. is_external_interrupt(vect_info) will always be false since idt_vectoring_info is zeroed in vmx_complete_interrupts(). Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: Rewrite vmx_complete_interrupt()'s twisted maze of if() statementsGleb Natapov2009-06-10
| | | | | | | | | | | ...with a more straightforward switch(). Also fix a bug when NMI could be dropped on exit. Although this should never happen in practice, since NMIs can only be injected, never triggered internally by the guest like exceptions. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: Fix handling of a fault during NMI unblocked due to IRETGleb Natapov2009-06-10
| | | | | | | | | Bit 12 is undefined in any of the following cases: If the VM exit sets the valid bit in the IDT-vectoring information field. If the VM exit is due to a double fault. 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>
* KVM: VMX: Fix feature testingSheng Yang2009-06-10
| | | | | | | The testing of feature is too early now, before vmcs_config complete initialization. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: VMX: Clean up Flex Priority relatedSheng Yang2009-06-10
| | | | | | | And clean paranthes on returns. Signed-off-by: Sheng Yang <sheng@linux.intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: remove pointless conditional before kfree() in lapic initializationWei Yongjun2009-06-10
| | | | | | | Remove pointless conditional before kfree(). Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* KVM: MMU: Use different shadows when EFER.NXE changesAvi Kivity2009-06-10
| | | | | | | | | | | | | A pte that is shadowed when the guest EFER.NXE=1 is not valid when EFER.NXE=0; if bit 63 is set, the pte should cause a fault, and since the shadow EFER always has NX enabled, this won't happen. Fix by using a different shadow page table for different EFER.NXE bits. This allows vcpus to run correctly with different values of EFER.NXE, and for transitions on this bit to be handled correctly without requiring a full flush. Signed-off-by: Avi Kivity <avi@redhat.com>
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-06 23:28:21 -0400