- 31 12月, 2008 40 次提交
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由 Hollis Blanchard 提交于
Cores provide 3 emulation hooks, implemented for example in the new 4xx_emulate.c: kvmppc_core_emulate_op kvmppc_core_emulate_mtspr kvmppc_core_emulate_mfspr Strictly speaking the last two aren't necessary, but provide for more informative error reporting ("unknown SPR"). Long term I'd like to have instruction decoding autogenerated from tables of opcodes, and that way we could aggregate universal, Book E, and core-specific instructions more easily and without redundant switch statements. Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
This is used in a couple places in KVM, but isn't KVM-specific. However, this patch doesn't modify other in-kernel emulation code: - xmon uses a direct copy of ppc_opc.c from binutils - emulate_instruction() doesn't need it because it can use a series of mask tests. Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Acked-by: NPaul Mackerras <paulus@samba.org> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
This introduces a set of core-provided hooks. For 440, some of these are implemented by booke.c, with the rest in (the new) 44x.c. Note that these hooks are link-time, not run-time. Since it is not possible to build a single kernel for both e500 and 440 (for example), using function pointers would only add overhead. Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
The division was somewhat artificial and cumbersome, and had no functional benefit anyways: we can only guests built for the real host processor. Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
This will ease ports to other cores. Also remove unused "struct kvm_tlb" while we're at it. Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Hollis Blanchard 提交于
This will make it easier to provide implementations for other cores. Signed-off-by: NHollis Blanchard <hollisb@us.ibm.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Izik Eidus 提交于
Some areas of kvm x86 mmu are using gfn offset inside a slot without unaliasing the gfn first. This patch makes sure that the gfn will be unaliased and add gfn_to_memslot_unaliased() to save the calculating of the gfn unaliasing in case we have it unaliased already. Signed-off-by: NIzik Eidus <ieidus@redhat.com> Acked-by: NMarcelo Tosatti <mtosatti@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
Ideally, every assigned device should in a clear condition before and after assignment, so that the former state of device won't affect later work. Some devices provide a mechanism named Function Level Reset, which is defined in PCI/PCI-e document. We should execute it before and after device assignment. (But sadly, the feature is new, and most device on the market now don't support it. We are considering using D0/D3hot transmit to emulate it later, but not that elegant and reliable as FLR itself.) [Update: Reminded by Xiantao, execute FLR after we ensure that the device can be assigned to the guest.] Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiantao Zhang 提交于
Remove the lock protection for kvm halt logic, otherwise, once other vcpus want to acquire the lock, and they have to wait all vcpus are waken up from halt. Signed-off-by: NXiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Xiantao Zhang 提交于
1. Increase the size of data area to 64M 2. Support more vcpus and memory, 128 vcpus and 256G memory are supported for guests. 3. Add the boundary check for memory and vcpu allocation. With this patch, kvm guest's data area looks as follow: * * +----------------------+ ------- KVM_VM_DATA_SIZE * | vcpu[n]'s data | | ___________________KVM_STK_OFFSET * | | | / | * | .......... | | /vcpu's struct&stack | * | .......... | | /---------------------|---- 0 * | vcpu[5]'s data | | / vpd | * | vcpu[4]'s data | |/-----------------------| * | vcpu[3]'s data | / vtlb | * | vcpu[2]'s data | /|------------------------| * | vcpu[1]'s data |/ | vhpt | * | vcpu[0]'s data |____________________________| * +----------------------+ | * | memory dirty log | | * +----------------------+ | * | vm's data struct | | * +----------------------+ | * | | | * | | | * | | | * | | | * | | | * | | | * | | | * | vm's p2m table | | * | | | * | | | * | | | | * vm's data->| | | | * +----------------------+ ------- 0 * To support large memory, needs to increase the size of p2m. * To support more vcpus, needs to ensure it has enough space to * hold vcpus' data. */ Signed-off-by: NXiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Guillaume Thouvenin 提交于
If emulate_invalid_guest_state is enabled, the emulator is called when guest state is invalid. Until now, we reported an mmio failure when emulate_instruction() returned EMULATE_DO_MMIO. This patch adds the case where emulate_instruction() failed and an MMIO emulation is needed. Signed-off-by: NGuillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Guillaume Thouvenin 提交于
If we call the emulator we shouldn't call skip_emulated_instruction() in the first place, since the emulator already computes the next rip for us. Thus we move ->skip_emulated_instruction() out of kvm_emulate_pio() and into handle_io() (and the svm equivalent). We also replaced "return 0" by "break" in the "do_io:" case because now the shadow register state needs to be committed. Otherwise eip will never be updated. Signed-off-by: NGuillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Amit Shah 提交于
The busy flag of the TR selector is not set by the hardware. This breaks migration from amd hosts to intel hosts. Signed-off-by: NAmit Shah <amit.shah@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Amit Shah 提交于
The hardware does not set the 'g' bit of the cs selector and this breaks migration from amd hosts to intel hosts. Set this bit if the segment limit is beyond 1 MB. Signed-off-by: NAmit Shah <amit.shah@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Amit Shah 提交于
get_segment_descritptor_dtable() contains an obvious type. Signed-off-by: NAmit Shah <amit.shah@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
Also remove unnecessary parameter of unregister irq ack notifier. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
As suggested by Avi, this patch introduces a counter of VCPUs that have LVT0 set to NMI mode. Only if the counter > 0, we push the PIT ticks via all LAPIC LVT0 lines to enable NMI watchdog support. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Acked-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
This patch refactors the NMI watchdog delivery patch, consolidating tests and providing a proper API for delivering watchdog events. An included micro-optimization is to check only for apic_hw_enabled in kvm_apic_local_deliver (the test for LVT mask is covering the soft-disabled case already). Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Acked-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Guillaume Thouvenin 提交于
Add decode entries for 0x04 and 0x05 (ADD) opcodes, execution is already implemented. Signed-off-by: NGuillaume Thouvenin <guillaume.thouvenin@ext.bull.net> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
PCI device assignment would map guest MMIO spaces as separate slot, so it is possible that the device has more than 2 MMIO spaces and overwrite current private memslot. The patch move private memory slot to the top of userspace visible memory slots. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
Otherwise set_bit() for private memory slot(above KVM_MEMORY_SLOTS) would corrupted memory in 32bit host. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
Remove one left improper comment of removed CR2. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
The effective memory type of EPT is the mixture of MSR_IA32_CR_PAT and memory type field of EPT entry. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
For EPT memory type support. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
GUEST_PAT support is a new feature introduced by Intel Core i7 architecture. With this, cpu would save/load guest and host PAT automatically, for EPT memory type in guest depends on MSR_IA32_CR_PAT. Also add save/restore for MSR_IA32_CR_PAT. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
As well as reset mmu context when set MTRR. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
For KVM can reuse the type define, and need them to support shadow MTRR. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Sheng Yang 提交于
Prepare for exporting them. Signed-off-by: NSheng Yang <sheng@linux.intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Gleb Natapov 提交于
Call kvm_arch_vcpu_reset() instead of directly using arch callback. The function does additional things. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
Older VMX supporting CPUs do not provide the "Virtual NMI" feature for tracking the NMI-blocked state after injecting such events. For now KVM is unable to inject NMIs on those CPUs. Derived from Sheng Yang's suggestion to use the IRQ window notification for detecting the end of NMI handlers, this patch implements virtual NMI support without impact on the host's ability to receive real NMIs. The downside is that the given approach requires some heuristics that can cause NMI nesting in vary rare corner cases. The approach works as follows: - inject NMI and set a software-based NMI-blocked flag - arm the IRQ window start notification whenever an NMI window is requested - if the guest exits due to an opening IRQ window, clear the emulated NMI-blocked flag - if the guest net execution time with NMI-blocked but without an IRQ window exceeds 1 second, force NMI-blocked reset and inject anyway This approach covers most practical scenarios: - succeeding NMIs are seperated by at least one open IRQ window - the guest may spin with IRQs disabled (e.g. due to a bug), but leaving the NMI handler takes much less time than one second - the guest does not rely on strict ordering or timing of NMIs (would be problematic in virtualized environments anyway) Successfully tested with the 'nmi n' monitor command, the kgdbts testsuite on smp guests (additional patches required to add debug register support to kvm) + the kernel's nmi_watchdog=1, and a Siemens- specific board emulation (+ guest) that comes with its own NMI watchdog mechanism. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
This patch adds the required bits to the VMX side for user space injected NMIs. As with the preexisting in-kernel irqchip support, the CPU must provide the "virtual NMI" feature for proper tracking of the NMI blocking state. Based on the original patch by Sheng Yang. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NSheng Yang <sheng.yang@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
Introduces the KVM_NMI IOCTL to the generic x86 part of KVM for injecting NMIs from user space and also extends the statistic report accordingly. Based on the original patch by Sheng Yang. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NSheng Yang <sheng.yang@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
Kick the NMI receiving VCPU in case the triggering caller runs in a different context. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
Ensure that a VCPU with pending NMIs is considered runnable. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
LINT0 of the LAPIC can be used to route PIT events as NMI watchdog ticks into the guest. This patch aligns the in-kernel irqchip emulation with the user space irqchip with already supports this feature. The trick is to route PIT interrupts to all LAPIC's LVT0 lines. Rebased and slightly polished patch originally posted by Sheng Yang. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NSheng Yang <sheng.yang@intel.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
Fix NMI injection in real-mode with the same pattern we perform IRQ injection. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
do_interrupt_requests and vmx_intr_assist go different way for achieving the same: enabling the nmi/irq window start notification. Unify their code over enable_{irq|nmi}_window, get rid of a redundant call to enable_intr_window instead of direct enable_nmi_window invocation and unroll enable_intr_window for both in-kernel and user space irq injection accordingly. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
There are currently two ways in VMX to check if an IRQ or NMI can be injected: - vmx_{nmi|irq}_enabled and - vcpu.arch.{nmi|interrupt}_window_open. Even worse, one test (at the end of vmx_vcpu_run) uses an inconsistent, likely incorrect logic. This patch consolidates and unifies the tests over {nmi|interrupt}_window_open as cache + vmx_update_window_states for updating the cache content. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
CPU reset invalidates pending or already injected NMIs, therefore reset the related state variables. Based on original patch by Gleb Natapov. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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由 Jan Kiszka 提交于
Properly set GUEST_INTR_STATE_NMI and reset nmi_injected when a task-switch vmexit happened due to a task gate being used for handling NMIs. Also avoid the false warning about valid vectoring info in kvm_handle_exit. Based on original patch by Gleb Natapov. Signed-off-by: NGleb Natapov <gleb@redhat.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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