linux/arch/x86/kvm
Gabriel L. Somlo 87c00572ba kvm: x86: emulate monitor and mwait instructions as nop
Treat monitor and mwait instructions as nop, which is architecturally
correct (but inefficient) behavior. We do this to prevent misbehaving
guests (e.g. OS X <= 10.7) from crashing after they fail to check for
monitor/mwait availability via cpuid.

Since mwait-based idle loops relying on these nop-emulated instructions
would keep the host CPU pegged at 100%, do NOT advertise their presence
via cpuid, to prevent compliant guests from using them inadvertently.

Signed-off-by: Gabriel L. Somlo <somlo@cmu.edu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-08 15:40:49 +02:00
..
cpuid.c kvm: x86: emulate monitor and mwait instructions as nop 2014-05-08 15:40:49 +02:00
cpuid.h KVM: x86: Mark bit 7 in long-mode PDPTE according to 1GB pages support 2014-05-07 17:25:22 +02:00
emulate.c KVM: x86: IN instruction emulation should ignore REP-prefix 2014-04-23 17:46:59 -03:00
i8254.c KVM: x86: limit PIT timer frequency 2014-01-15 12:43:54 +01:00
i8254.h KVM: fold kvm_pit_timer into kvm_kpit_state 2012-08-01 00:21:07 -03:00
i8259.c KVM: inject ExtINT interrupt before APIC interrupts 2012-12-13 23:05:21 -02:00
irq.c KVM: nVMX: Ack and write vector info to intr_info if L1 asks us to 2014-04-22 18:41:33 -03:00
irq.h KVM: switch to symbolic name for irq_states size 2012-07-20 16:12:16 -03:00
Kconfig kvm: make KVM_MMU_AUDIT help text more readable 2014-01-20 12:59:26 +01:00
kvm_cache_regs.h KVM: MMU: Do not unconditionally read PDPTE from guest memory 2011-09-25 19:18:01 +03:00
lapic.c First round of KVM updates for 3.14; PPC parts will come next week. 2014-01-22 21:40:43 -08:00
lapic.h KVM: x86: Validate guest writes to MSR_IA32_APICBASE 2014-01-27 14:39:44 +01:00
Makefile kvm: Add VFIO device 2013-10-30 19:02:03 +01:00
mmu_audit.c kvm: mmu: delay mmu audit activation 2013-11-20 11:12:56 +02:00
mmu.c KVM: x86: Mark bit 7 in long-mode PDPTE according to 1GB pages support 2014-05-07 17:25:22 +02:00
mmu.h KVM: MMU: flush tlb out of mmu lock when write-protect the sptes 2014-04-23 17:49:52 -03:00
mmutrace.h KVM: MMU: add tracepoint for check_mmio_spte 2013-06-27 14:20:37 +03:00
paging_tmpl.h Revert "KVM: Simplify kvm->tlbs_dirty handling" 2014-04-23 17:49:48 -03:00
pmu.c KVM: x86: Fix wrong/stuck PMU when guest does not use PMI 2014-04-23 17:46:52 -03:00
svm.c kvm: x86: emulate monitor and mwait instructions as nop 2014-05-08 15:40:49 +02:00
trace.h KVM: x86: improve the usability of the 'kvm_pio' tracepoint 2014-05-05 22:42:05 +02:00
tss.h
vmx.c kvm: x86: emulate monitor and mwait instructions as nop 2014-05-08 15:40:49 +02:00
x86.c kvm/x86: implement hv EOI assist 2014-05-07 18:00:49 +02:00
x86.h KVM: x86: introduce kvm_supported_xcr0() 2014-03-17 12:21:38 +01:00