Joerg Roedel 893a5ab6ee KVM: SVM: Make sure KERNEL_GS_BASE is valid when loading gs_index ...

The gs_index loading code uses the swapgs instruction to
switch to the user gs_base temporarily. This is unsave in an
lightweight exit-path in KVM on AMD because the
KERNEL_GS_BASE MSR is switches lazily. An NMI happening in
the critical path of load_gs_index may use the wrong GS_BASE
value then leading to unpredictable behavior, e.g. a
triple-fault.

This patch fixes the issue by making sure that load_gs_index
is called only with a valid KERNEL_GS_BASE value loaded in
KVM.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

2011-02-09 18:31:36 +02:00

..

emulate.c

KVM: SVM: copy instruction bytes from VMCB

2011-01-12 11:31:07 +02:00

i8254.c

KVM: fix typo in copyright notice

2010-10-24 10:53:14 +02:00

i8254.h

KVM: x86: Introduce a workqueue to deliver PIT timer interrupts

2010-08-01 10:46:49 +03:00

i8259.c

KVM: i8259: initialize isr_ack

2011-01-02 11:52:48 +02:00

irq.c

KVM: fix typo in copyright notice

2010-10-24 10:53:14 +02:00

irq.h

KVM: Convert PIC lock from raw spinlock to ordinary spinlock

2010-10-24 10:52:56 +02:00

Kconfig

KVM: Halt vcpu if page it tries to access is swapped out

2011-01-12 11:21:39 +02:00

kvm_cache_regs.h

KVM: Fetch guest cr3 from hardware on demand

2011-01-12 11:31:16 +02:00

kvm_timer.h

KVM: arch/x86/kvm/kvm_timer.h checkpatch cleanup

2010-05-17 12:14:42 +03:00

lapic.c

KVM: Avoid double interrupt injection with vapic

2011-01-12 11:23:36 +02:00

lapic.h

KVM: Add HYPER-V apic access MSRs

2010-03-01 12:36:00 -03:00

Makefile

KVM: x86: Makefile clean up

2011-01-12 11:29:08 +02:00

mmu_audit.c

KVM: MMU: audit: allow audit more guests at the same time

2011-01-12 11:31:17 +02:00

mmu.c

thp: mmu_notifier_test_young

2011-01-13 17:32:46 -08:00

mmu.h

KVM: MMU: Don't track nested fault info in error-code

2010-10-24 10:52:55 +02:00

mmutrace.h

KVM: MMU: support disable/enable mmu audit dynamicly

2010-10-24 10:51:56 +02:00

paging_tmpl.h

thp: kvm mmu transparent hugepage support

2011-01-13 17:32:41 -08:00

svm.c

KVM: SVM: Make sure KERNEL_GS_BASE is valid when loading gs_index

2011-02-09 18:31:36 +02:00

timer.c

KVM: fix typo in copyright notice

2010-10-24 10:53:14 +02:00

trace.h

KVM: Add instruction-set-specific exit qualifications to kvm_exit trace

2011-01-12 11:29:41 +02:00

tss.h

KVM: x86: hardware task switching support

2008-04-27 12:00:39 +03:00

vmx.c

KVM: VMX: when entering real mode align segment base to 16 bytes

2011-01-12 11:31:20 +02:00

x86.c

Merge branch 'kvm-updates/2.6.38' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2011-01-13 10:14:24 -08:00

x86.h

KVM: SVM: Do not report xsave in supported cpuid

2010-12-08 17:28:37 +02:00