- 10 9月, 2009 40 次提交
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由 Gleb Natapov 提交于
Most of the time IRR is empty, so instead of scanning the whole IRR on each VM entry keep a variable that tells us if IRR is not empty. IRR will have to be scanned twice on each IRQ delivery, but this is much more rare than VM entry. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Replace previous exception with a new one in a hope that instruction re-execution will regenerate lost exception. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
Disable usage of 2M pages if VMX_EPT_2MB_PAGE_BIT (bit 16) is clear in MSR_IA32_VMX_EPT_VPID_CAP and EPT is enabled. [avi: s/largepages_disabled/largepages_enabled/ to avoid negative logic] Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
Handler for EPT misconfiguration which checks for valid state in the shadow pagetables, printing the spte on each level. The separate WARN_ONs are useful for kerneloops.org. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
Required by EPT misconfiguration handler. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
This way there is no need to add explicit checks in every for_each_shadow_entry user. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
Required for EPT misconfiguration handler. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Andre Przywara 提交于
The performance counter MSRs are different for AMD and Intel CPUs and they are chosen mainly by the CPUID vendor string. This patch catches writes to all addresses (regardless of VMX/SVM path) and handles them in the generic MSR handler routine. Writing a 0 into the event select register is something we perfectly emulate ;-), so don't print out a warning to dmesg in this case. This fixes booting a 64bit Windows guest with an AMD CPUID on an Intel host. Signed-off-by: NAndre Przywara <andre.przywara@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
Make the audit code aware of largepages. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
- Fail early in case gfn_to_pfn returns is_error_pfn. - For the pre pte write case, avoid spurious "gva is valid but spte is notrap" messages (the emulation code does the guest write first, so this particular case is OK). Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
It is valid to set non leaf sptes as notrap. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
- Unsync pages contain writable sptes in the rmap. - rmaps do not exclusively contain writable sptes anymore. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
Under testing, count_writable_mappings returns a value that is 2 integers larger than what count_rmaps returns. Suspicion is that either of the two functions is counting a duplicate (either positively or negatively). Modifying check_writable_mappings_rmap to check for rmap existance on all present MMU pages fails to trigger an error, which should keep Avi happy. Also introduce mmu_spte_walk to invoke a callback on all present sptes visible to the current vcpu, might be useful in the future. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
Hiding some of the last largepage / level interaction (which is useful for gbpages and for zero based levels). Also merge the PT_PAGE_TABLE_LEVEL clearing loop in unlink_children. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Instead of mindlessly retrying to execute the instruction, report the failure to userspace. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
[christian: remove unused variables on s390] Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Archs are free to use vcpu_id as they see fit. For x86 it is used as vcpu's apic id. New ioctl is added to configure boot vcpu id that was assumed to be 0 till now. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Use it instead of open code "vcpu_id zero is BSP" assumption. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
We use shadow_pte and spte inconsistently, switch to the shorter spelling. Rename set_shadow_pte() to __set_spte() to avoid a conflict with the existing set_spte(), and to indicate its lowlevelness. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
is_dirty_pte() is used on guest ptes, not shadow ptes, so it needs to avoid shadow_dirty_mask and use PT_DIRTY_MASK instead. Misdetecting dirty pages could lead to unnecessarily setting the dirty bit under EPT. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
rmode is only used in vmx, so move it to vmx.c Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Nitin A Kamble 提交于
"Unrestricted Guest" feature is added in the VMX specification. Intel Westmere and onwards processors will support this feature. It allows kvm guests to run real mode and unpaged mode code natively in the VMX mode when EPT is turned on. With the unrestricted guest there is no need to emulate the guest real mode code in the vm86 container or in the emulator. Also the guest big real mode code works like native. The attached patch enhances KVM to use the unrestricted guest feature if available on the processor. It also adds a new kernel/module parameter to disable the unrestricted guest feature at the boot time. Signed-off-by: NNitin A Kamble <nitin.a.kamble@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
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: NAlex Williamson <alex.williamson@hp.com> Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Marcelo Tosatti 提交于
isr_ack is protected by kvm_pic->lock. Signed-off-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
None of the interface services the LAPIC emulation provides need to be exported to modules, and kvm_lapic_get_base is even totally unused today. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Instead of returning -ENOTSUPP, exit normally but indicate the hardware exit reason. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
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: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Instead of reading the PDPTRs from memory after every exit (which is slow and wrong, as the PDPTRs are stored on the cpu), sync the PDPTRs from memory to the VMCS before entry, and from the VMCS to memory after exit. Do the same for cr3. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
vmx_set_cr3() will call vmx_tlb_flush(), which will flush the ept context. So there is no need to call ept_sync_context() explicitly. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gregory Haskins 提交于
We currently publish the i8254 resources to the pio_bus before the devices are fully initialized. Since we hold the pit_lock, its probably not a real issue. But lets clean this up anyway. Reported-by: NAvi Kivity <avi@redhat.com> Signed-off-by: NGregory Haskins <ghaskins@novell.com> Acked-by: NChris Wright <chrisw@sous-sol.org> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gregory Haskins 提交于
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: NGregory Haskins <ghaskins@novell.com> Acked-by: NChris Wright <chrisw@sous-sol.org> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
kvm_svm.h is only included from svm.c, so fold it in. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Andre Przywara 提交于
Since AMD does not support sysenter in 64bit mode, the VMCB fields storing the MSRs are truncated to 32bit upon VMRUN/#VMEXIT. So store the values in a separate 64bit storage to avoid truncation. [andre: fix amd->amd migration] Signed-off-by: NChristoph Egger <christoph.egger@amd.com> Signed-off-by: NAndre Przywara <andre.przywara@amd.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
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: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gregory Haskins 提交于
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: NGregory Haskins <ghaskins@novell.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Avi Kivity 提交于
Reduce Kconfig code duplication. Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
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: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Christoph Hellwig 提交于
Use proper foo-y style list additions to cleanup all the conditionals, move module selection after compound object selection and remove the superflous comment. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAvi Kivity <avi@redhat.com>
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