linux_dsm_epyc7002/arch/x86/kvm
Sean Christopherson 2ed41aa631 KVM: VMX: Intercept guest reserved CR4 bits to inject #GP fault
Intercept CR4 bits that are guest reserved so that KVM correctly injects
a #GP fault if the guest attempts to set a reserved bit.  If a feature
is supported by the CPU but is not exposed to the guest, and its
associated CR4 bit is not intercepted by KVM by default, then KVM will
fail to inject a #GP if the guest sets the CR4 bit without triggering
an exit, e.g. by toggling only the bit in question.

Note, KVM doesn't give the guest direct access to any CR4 bits that are
also dependent on guest CPUID.  Yet.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200930041659.28181-5-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-10-21 17:48:50 -04:00
..
mmu kvm x86/mmu: Make struct kernel_param_ops definitions const 2020-10-21 17:36:33 -04:00
svm KVM: SVM: Initialize prev_ga_tag before use 2020-10-21 17:48:49 -04:00
vmx KVM: VMX: Intercept guest reserved CR4 bits to inject #GP fault 2020-10-21 17:48:50 -04:00
cpuid.c KVM: x86: Move call to update_exception_bitmap() into VMX code 2020-10-21 17:48:50 -04:00
cpuid.h kvm: x86: only provide PV features if enabled in guest's CPUID 2020-10-21 17:36:32 -04:00
debugfs.c KVM: let kvm_destroy_vm_debugfs clean up vCPU debugfs directories 2020-06-04 11:00:54 -04:00
emulate.c KVM: x86: report negative values from wrmsr emulation to userspace 2020-10-21 17:36:34 -04:00
hyperv.c KVM: x86: hyper-v: disallow configuring SynIC timers with no SynIC 2020-09-28 07:57:33 -04:00
hyperv.h x86/kvm/hyper-v: Add support for synthetic debugger interface 2020-06-01 04:26:11 -04:00
i8254.c kvm: i8254: remove redundant assignment to pointer s 2020-06-11 12:35:18 -04:00
i8254.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
i8259.c KVM: x86: Refactor picdev_write() to prevent Spectre-v1/L1TF attacks 2020-01-27 19:59:37 +01:00
ioapic.c kvm: ioapic: Restrict lazy EOI update to edge-triggered interrupts 2020-05-04 12:29:05 -04:00
ioapic.h kvm/x86: Remove redundant function implementations 2020-05-27 13:11:10 -04:00
irq_comm.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
irq.c KVM: nSVM: extract svm_set_gif 2020-06-01 04:26:01 -04:00
irq.h kvm/x86: Remove redundant function implementations 2020-05-27 13:11:10 -04:00
Kconfig x86/kvm: hide KVM options from menuconfig when KVM is not compiled 2020-10-21 17:36:30 -04:00
kvm_cache_regs.h KVM: x86: Intercept LA57 to inject #GP fault when it's reserved 2020-10-21 17:48:49 -04:00
kvm_emulate.h ARM: 2020-04-02 15:13:15 -07:00
lapic.c KVM: nVMX: Morph notification vector IRQ on nested VM-Enter to pending PI 2020-09-28 07:57:22 -04:00
lapic.h KVM: nVMX: Morph notification vector IRQ on nested VM-Enter to pending PI 2020-09-28 07:57:22 -04:00
Makefile KVM: VMX: Extract posted interrupt support to separate files 2020-09-28 07:57:38 -04:00
mmu.h KVM: x86: Move illegal GPA helper out of the MMU code 2020-09-28 07:57:27 -04:00
mtrr.c KVM: x86: Protect MSR-based index computations in fixed_msr_to_seg_unit() from Spectre-v1/L1TF attacks 2020-01-27 19:59:39 +01:00
pmu.c KVM/x86: pmu: Fix #GP condition check for RDPMC emulation 2020-07-09 07:08:37 -04:00
pmu.h kvm: x86: limit the maximum number of vPMU fixed counters to 3 2020-07-08 16:21:59 -04:00
trace.h KVM: x86: Use common definition for kvm_nested_vmexit tracepoint 2020-09-28 07:57:52 -04:00
tss.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
x86.c KVM: x86: allow kvm_x86_ops.set_efer to return an error value 2020-10-21 17:48:48 -04:00
x86.h KVM: x86: Add infrastructure for MSR filtering 2020-09-28 07:58:05 -04:00