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78ac8b47c5
linux-next/arch/x86/kvm
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Avi Kivity 78ac8b47c5 KVM: VMX: Save/restore rflags.vm correctly in real mode 
Currently we set eflags.vm unconditionally when entering real mode emulation
through virtual-8086 mode, and clear it unconditionally when we enter protected
mode.  The means that the following sequence

  KVM_SET_REGS  (rflags.vm=1)
  KVM_SET_SREGS (cr0.pe=1)

Ends up with rflags.vm clear due to KVM_SET_SREGS triggering enter_pmode().

Fix by shadowing rflags.vm (and rflags.iopl) correctly while in real mode:
reads and writes to those bits access a shadow register instead of the actual
register.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-04-20 12:59:31 +03:00
..
emulate.c KVM: Fix emulate_sys[call, enter, exit]()'s fault handling 2010-03-01 12:36:14 -03:00
i8254.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
i8254.h KVM: Convert i8254/i8259 locks to raw_spinlocks 2010-03-01 12:36:12 -03:00
i8259.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
irq.c KVM: Remove irq_pending bitmap 2009-06-10 11:48:57 +03:00
irq.h KVM: Convert i8254/i8259 locks to raw_spinlocks 2010-03-01 12:36:12 -03:00
Kconfig Merge branch 'kvm-updates/2.6.34' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2010-03-05 13:12:34 -08:00
kvm_cache_regs.h KVM: Optimize kvm_read_cr[04]_bits() 2010-03-01 12:36:05 -03:00
kvm_timer.h KVM: Use pointer to vcpu instead of vcpu_id in timer code. 2009-09-10 08:32:52 +03:00
lapic.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
lapic.h KVM: Add HYPER-V apic access MSRs 2010-03-01 12:36:00 -03:00
Makefile KVM: Move assigned device code to own file 2009-12-03 09:32:09 +02:00
mmu.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mmu.h KVM: x86 emulator: fix memory access during x86 emulation 2010-03-01 12:36:11 -03:00
mmutrace.h KVM: Trace shadow page lifecycle 2009-09-10 08:33:10 +03:00
paging_tmpl.h KVM: x86 emulator: fix memory access during x86 emulation 2010-03-01 12:36:11 -03:00
svm.c KVM: SVM: Fix memory leaks that happen when svm_create_vcpu() fails 2010-04-20 12:55:04 +03:00
timer.c KVM: Drop useless atomic test from timer function 2009-09-10 08:32:57 +03:00
trace.h KVM: Trace failed msr reads and writes 2010-03-01 12:36:06 -03:00
tss.h KVM: x86: hardware task switching support 2008-04-27 12:00:39 +03:00
vmx.c KVM: VMX: Save/restore rflags.vm correctly in real mode 2010-04-20 12:59:31 +03:00
x86.c KVM: allow bit 10 to be cleared in MSR_IA32_MC4_CTL 2010-04-20 12:59:31 +03:00
x86.h KVM: Rename vcpu->shadow_efer to efer 2010-03-01 12:36:04 -03:00