Paolo Bonzini 92cb6f3c55 kvm, vmx: Really fix lazy FPU on nested guest ...

commit 1b385cbdd7 upstream.

Commit e504c9098e (kvm, vmx: Fix lazy FPU on nested guest, 2013-11-13)
highlighted a real problem, but the fix was subtly wrong.

nested_read_cr0 is the CR0 as read by L2, but here we want to look at
the CR0 value reflecting L1's setup.  In other words, L2 might think
that TS=0 (so nested_read_cr0 has the bit clear); but if L1 is actually
running it with TS=1, we should inject the fault into L1.

The effective value of CR0 in L2 is contained in vmcs12->guest_cr0, use
it.

Fixes: e504c9098e
Reported-by: Kashyap Chamarty <kchamart@redhat.com>
Reported-by: Stefan Bader <stefan.bader@canonical.com>
Tested-by: Kashyap Chamarty <kchamart@redhat.com>
Tested-by: Anthoine Bourgeois <bourgeois@bertin.fr>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2014-03-06 22:06:18 -08:00

..

cpuid.c

kvm, cpuid: Fix sparse warning

2013-11-07 12:27:46 +02:00

cpuid.h

kvm: Add KVM_GET_EMULATED_CPUID

2013-10-30 18:54:39 +01:00

emulate.c

KVM: emulator: cleanup decode_register_operand() a bit

2013-11-05 09:11:30 +02:00

i8254.c

KVM: x86: limit PIT timer frequency

2014-02-06 11:33:51 -08:00

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

x86, apicv: add virtual interrupt delivery support

2013-01-29 10:48:19 +02:00

irq.h

KVM: switch to symbolic name for irq_states size

2012-07-20 16:12:16 -03:00

Kconfig

kvm: Add VFIO device

2013-10-30 19:02:03 +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

KVM: x86: limit PIT timer frequency

2014-02-06 11:33:51 -08:00

lapic.h

KVM: x86: Convert vapic synchronization to _cached functions (CVE-2013-6368)

2013-12-12 22:39:46 +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: mmu: change useless int return types to void

2013-10-03 15:44:02 +03:00

mmu.h

KVM: mmu: change useless int return types to void

2013-10-03 15:44:02 +03:00

mmutrace.h

KVM: MMU: add tracepoint for check_mmio_spte

2013-06-27 14:20:37 +03:00

paging_tmpl.h

KVM: mmu: allow page tables to be in read-only slots

2013-09-17 12:52:31 +03:00

pmu.c

perf, kvm: Support the in_tx/in_tx_cp modifiers in KVM arch perfmon emulation v5

2013-07-19 18:24:45 +02:00

svm.c

KVM: mmu: change useless int return types to void

2013-10-03 15:44:02 +03:00

trace.h

kvm: Add a tracepoint write_tsc_offset

2013-06-27 14:20:51 +03:00

tss.h

…

vmx.c

kvm, vmx: Really fix lazy FPU on nested guest

2014-03-06 22:06:18 -08:00

x86.c

kvm: x86: fix emulator buffer overflow (CVE-2014-0049)

2014-03-06 22:06:18 -08:00

x86.h

KVM: x86: limit PIT timer frequency

2014-02-06 11:33:51 -08:00