Sean Christopherson 112022bdb5 KVM: x86/mmu: Treat NX as used (not reserved) for all !TDP shadow MMUs ... Mark NX as being used for all non-nested shadow MMUs, as KVM will set the NX bit for huge SPTEs if the iTLB mutli-hit mitigation is enabled. Checking the mitigation itself is not sufficient as it can be toggled on at any time and KVM doesn't reset MMU contexts when that happens. KVM could reset the contexts, but that would require purging all SPTEs in all MMUs, for no real benefit. And, KVM already forces EFER.NX=1 when TDP is disabled (for WP=0, SMEP=1, NX=0), so technically NX is never reserved for shadow MMUs. Fixes: b8e8c8303f ("kvm: mmu: ITLB_MULTIHIT mitigation") Cc: stable@vger.kernel.org Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20210622175739.3610207-3-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2021-06-24 18:00:35 -04:00
..
mmu	KVM: x86/mmu: Treat NX as used (not reserved) for all !TDP shadow MMUs	2021-06-24 18:00:35 -04:00
svm	KVM: x86: Print CPU of last attempted VM-entry when dumping VMCS/VMCB	2021-06-24 04:31:13 -04:00
vmx	KVM: nVMX: Handle split-lock #AC exceptions that happen in L2	2021-06-24 04:31:16 -04:00
cpuid.c	KVM: x86: Fix fall-through warnings for Clang	2021-06-10 07:48:45 -04:00
cpuid.h	KVM: x86: Move reverse CPUID helpers to separate header file	2021-04-26 05:27:13 -04:00
debugfs.c	KVM: nVMX: nSVM: Add a new VCPU statistic to show if VCPU is in guest mode	2021-06-17 13:09:36 -04:00
emulate.c	KVM: x86: Drop "pre_" from enter/leave_smm() helpers	2021-06-17 13:09:35 -04:00
fpu.h	KVM: x86: Move FPU register accessors into fpu.h	2021-06-17 13:09:24 -04:00
hyperv.c	KVM: nVMX: Sync all PGDs on nested transition with shadow paging	2021-06-17 13:09:51 -04:00
hyperv.h	KVM: x86: hyper-v: Introduce KVM_CAP_HYPERV_ENFORCE_CPUID	2021-06-17 13:09:38 -04:00
i8254.c	kvm: i8254: remove redundant assignment to pointer s	2020-06-11 12:35:18 -04:00
i8254.h
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: break infinite recursion on lazy EOI	2020-10-24 04:42:06 -04:00
ioapic.h	kvm/x86: Remove redundant function implementations	2020-05-27 13:11:10 -04:00
irq_comm.c	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
irq.c	KVM: x86/xen: Add event channel interrupt vector upcall	2021-02-04 14:19:39 +00:00
irq.h	kvm/x86: Remove redundant function implementations	2020-05-27 13:11:10 -04:00
Kconfig	kvm: x86: implement KVM PM-notifier	2021-06-17 13:09:33 -04:00
kvm_cache_regs.h	KVM: x86: Introduce KVM_GET_SREGS2 / KVM_SET_SREGS2	2021-06-17 13:09:47 -04:00
kvm_emulate.h	KVM: x86: Drop "pre_" from enter/leave_smm() helpers	2021-06-17 13:09:35 -04:00
kvm_onhyperv.c	KVM: x86: hyper-v: Move the remote TLB flush logic out of vmx	2021-06-17 13:09:36 -04:00
kvm_onhyperv.h	KVM: x86: hyper-v: Move the remote TLB flush logic out of vmx	2021-06-17 13:09:36 -04:00
lapic.c	KVM: LAPIC: Keep stored TMCCT register value 0 after KVM_SET_LAPIC	2021-06-17 14:26:11 -04:00
lapic.h	KVM: x86: Add a return code to kvm_apic_accept_events	2021-06-17 13:09:31 -04:00
Makefile	KVM: stats: Add fd-based API to read binary stats data	2021-06-24 11:47:57 -04:00
mmu.h	KVM: x86: Drop pointless @reset_roots from kvm_init_mmu()	2021-06-17 13:09:54 -04:00
mtrr.c	KVM: x86: Add helper to consolidate "raw" reserved GPA mask calculations	2021-02-04 09:27:30 -05:00
pmu.c	KVM: x86: use static calls to reduce kvm_x86_ops overhead	2021-02-04 05:27:30 -05:00
pmu.h	x86: Fix various typos in comments	2021-03-18 15:31:53 +01:00
reverse_cpuid.h	KVM: SEV: Mask CPUID[0x8000001F].eax according to supported features	2021-04-26 05:27:15 -04:00
trace.h	KVM: x86: Rename SMM tracepoint to make it reflect reality	2021-06-17 13:09:35 -04:00
tss.h
x86.c	KVM: debugfs: Reuse binary stats descriptors	2021-06-24 18:00:29 -04:00
x86.h	KVM: x86: Consolidate guest enter/exit logic to common helpers	2021-05-05 22:54:12 +02:00
xen.c	KVM: x86: Rename GPR accessors to make mode-aware variants the defaults	2021-04-26 05:27:13 -04:00
xen.h	KVM: x86/xen: Add support for vCPU runstate information	2021-03-02 14:30:54 -05:00