Paolo Bonzini 5f0b819995 KVM: MMU: fix reserved bit check for ept=0/CR0.WP=0/CR4.SMEP=1/EFER.NX=0 ... KVM has special logic to handle pages with pte.u=1 and pte.w=0 when CR0.WP=1. These pages' SPTEs flip continuously between two states: U=1/W=0 (user and supervisor reads allowed, supervisor writes not allowed) and U=0/W=1 (supervisor reads and writes allowed, user writes not allowed). When SMEP is in effect, however, U=0 will enable kernel execution of this page. To avoid this, KVM also sets NX=1 in the shadow PTE together with U=0, making the two states U=1/W=0/NX=gpte.NX and U=0/W=1/NX=1. When guest EFER has the NX bit cleared, the reserved bit check thinks that the latter state is invalid; teach it that the smep_andnot_wp case will also use the NX bit of SPTEs. Cc: stable@vger.kernel.org Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.inel.com> Fixes: c258b62b26 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2016-03-10 11:26:10 +01:00
..
assigned-dev.c	KVM: x86: move kvm_set_irq_inatomic to legacy device assignment	2015-11-04 16:24:36 +01:00
assigned-dev.h	KVM: x86: move device assignment out of kvm_host.h	2014-11-24 16:53:50 +01:00
cpuid.c	s390: A bunch of fixes and optimizations for interrupt and time	2015-11-05 16:26:26 -08:00
cpuid.h	Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-01-11 16:46:20 -08:00
emulate.c	KVM: x86: fix conversion of addresses to linear in 32-bit protected mode	2016-02-24 14:47:45 +01:00
hyperv.c	kvm/x86: Hyper-V SynIC timers tracepoints	2016-01-08 19:04:43 +01:00
hyperv.h	kvm/x86: Hyper-V SynIC timers	2015-12-16 18:49:45 +01:00
i8254.c	kvm: x86: only channel 0 of the i8254 is linked to the HPET	2016-01-07 13:50:38 +01:00
i8254.h	KVM: move iodev.h from virt/kvm/ to include/kvm	2015-03-26 21:43:12 +00:00
i8259.c	KVM: x86: clean/fix memory barriers in irqchip_in_kernel	2015-07-30 16:02:56 +02:00
ioapic.c	kvm/x86: split ioapic-handled and EOI exit bitmaps	2015-11-25 17:24:21 +01:00
ioapic.h	kvm/x86: split ioapic-handled and EOI exit bitmaps	2015-11-25 17:24:21 +01:00
iommu.c	kvm: rename pfn_t to kvm_pfn_t	2016-01-15 17:56:32 -08:00
irq_comm.c	kvm/x86: Hyper-V synthetic interrupt controller	2015-11-25 17:24:22 +01:00
irq.c	kvm/x86: per-vcpu apicv deactivation support	2015-11-25 17:24:21 +01:00
irq.h	KVM: x86: Add support for local interrupt requests from userspace	2015-10-01 15:06:29 +02:00
Kconfig	KVM: x86: select IRQ_BYPASS_MANAGER	2015-10-01 15:06:52 +02:00
kvm_cache_regs.h	KVM: x86: API changes for SMM support	2015-06-04 16:01:11 +02:00
lapic.c	kvm/x86: Hyper-V synthetic interrupt controller	2015-11-25 17:24:22 +01:00
lapic.h	kvm/x86: Hyper-V synthetic interrupt controller	2015-11-25 17:24:22 +01:00
Makefile	kvm/x86: move Hyper-V MSR's/hypercall code into hyperv.c file	2015-07-23 08:27:06 +02:00
mmu_audit.c	kvm: rename pfn_t to kvm_pfn_t	2016-01-15 17:56:32 -08:00
mmu.c	KVM: MMU: fix reserved bit check for ept=0/CR0.WP=0/CR4.SMEP=1/EFER.NX=0	2016-03-10 11:26:10 +01:00
mmu.h	KVM: x86: merge handle_mmio_page_fault and handle_mmio_page_fault_common	2015-11-10 12:06:03 +01:00
mmutrace.h	tracing: Rename ftrace_event.h to trace_events.h	2015-05-13 14:05:12 -04:00
mtrr.c	KVM: MTRR: treat memory as writeback if MTRR is disabled in guest CPUID	2015-12-22 15:29:00 +01:00
paging_tmpl.h	KVM: x86: MMU: fix ubsan index-out-of-range warning	2016-02-25 09:50:35 +01:00
pmu_amd.c	KVM: x86/vPMU: Fix unnecessary signed extension for AMD PERFCTRn	2015-08-11 15:19:41 +02:00
pmu_intel.c	KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch	2015-06-23 14:12:14 +02:00
pmu.c	KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch	2015-06-23 14:12:14 +02:00
pmu.h	KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch	2015-06-23 14:12:14 +02:00
svm.c	* s390: Support for runtime instrumentation within guests,	2016-01-12 13:22:12 -08:00
trace.h	kvm/x86: Hyper-V SynIC timers tracepoints	2016-01-08 19:04:43 +01:00
tss.h	KVM: x86: hardware task switching support	2008-04-27 12:00:39 +03:00
vmx.c	KVM: MMU: fix ept=0/pte.u=1/pte.w=0/CR0.WP=0/CR4.SMEP=1/EFER.NX=0 combo	2016-03-10 11:26:07 +01:00
x86.c	KVM: x86: fix root cause for missed hardware breakpoints	2016-02-26 13:03:39 +01:00
x86.h	x86/fpu: Rename XSAVE macros	2015-09-14 12:21:46 +02:00