Maxim Levitsky 4250160436 KVM: x86: don't expose MSR_IA32_UMWAIT_CONTROL unconditionally ... [ Upstream commit f4cfcd2d5a ] This msr is only available when the host supports WAITPKG feature. This breaks a nested guest, if the L1 hypervisor is set to ignore unknown msrs, because the only other safety check that the kernel does is that it attempts to read the msr and rejects it if it gets an exception. Cc: stable@vger.kernel.org Fixes: 6e3ba4abce ("KVM: vmx: Emulate MSR IA32_UMWAIT_CONTROL") Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> Message-Id: <20200523161455.3940-3-mlevitsk@redhat.com> Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> (cherry picked from commit f4cfcd2d5a use boot_cpu_has for checking the feature) Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-11-18 19:20:21 +01:00
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vmx	KVM: nVMX: Reload vmcs01 if getting vmcs12's pages fails	2020-10-29 09:57:28 +01:00
Kconfig	kvm: x86: add host poll control msrs	2019-06-18 11:43:46 +02:00
Makefile	KVM: x86: fix TRACE_INCLUDE_PATH and remove -I. header search paths	2019-01-25 19:12:37 +01:00
cpuid.c	kvm/svm: PKU not currently supported	2020-02-11 04:35:40 -08:00
cpuid.h	x86/cpufeatures: Combine word 11 and 12 into a new scattered features word	2019-06-20 12:38:44 +02:00
debugfs.c	KVM: no need to check return value of debugfs_create functions	2019-08-05 12:55:49 +02:00
emulate.c	KVM: x86: emulating RDPID failure shall return #UD rather than #GP	2020-10-29 09:57:57 +01:00
hyperv.c	KVM: x86: Protect kvm_hv_msr_[get|set]_crash_data() from Spectre-v1/L1TF attacks	2020-02-11 04:35:38 -08:00
hyperv.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499	2019-06-19 17:09:53 +02:00
i8254.c	kvm: x86: Add memcg accounting to KVM allocations	2019-02-20 22:48:30 +01:00
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	2020-02-11 04:35:37 -08:00
ioapic.c	KVM: x86: Protect ioapic_read_indirect() from Spectre-v1/L1TF attacks	2020-02-11 04:35:38 -08:00
ioapic.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
irq.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 320	2019-06-05 17:37:05 +02:00
irq.h	KVM/arm updates for 5.3	2019-07-11 15:14:16 +02:00
irq_comm.c	KVM: x86: don't notify userspace IOAPIC on edge-triggered interrupt EOI	2020-02-28 17:22:22 +01:00
kvm_cache_regs.h	KVM: x86: Mark CR4.TSD as being possibly owned by the guest	2020-07-16 08:16:44 +02:00
lapic.c	KVM: LAPIC: Mark hrtimer for period or oneshot mode to expire in hard interrupt context	2020-10-01 13:17:45 +02:00
lapic.h	KVM: SVM: Fix potential wrong physical id in avic_handle_ldr_update	2019-10-22 18:47:50 +02:00
mmu.c	KVM: x86/mmu: Commit zap of remaining invalid pages when recovering lpages	2020-10-29 09:57:28 +01:00
mmu.h	KVM: nVMX: Plumb L2 GPA through to PML emulation	2020-06-30 15:37:07 -04:00
mmu_audit.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499	2019-06-19 17:09:53 +02:00
mmutrace.h	KVM: x86: fix incorrect comparison in trace event	2020-10-01 13:17:35 +02:00
mtrr.c	KVM: x86: Protect MSR-based index computations in fixed_msr_to_seg_unit() from Spectre-v1/L1TF attacks	2020-02-11 04:35:39 -08:00
page_track.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499	2019-06-19 17:09:53 +02:00
paging_tmpl.h	KVM: nVMX: Plumb L2 GPA through to PML emulation	2020-06-30 15:37:07 -04:00
pmu.c	KVM: x86: Add fixed counters to PMU filter	2019-07-20 09:00:48 +02:00
pmu.h	KVM: x86: Protect MSR-based index computations in pmu.h from Spectre-v1/L1TF attacks	2020-02-11 04:35:38 -08:00
pmu_amd.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499	2019-06-19 17:09:53 +02:00
svm.c	KVM: SVM: Initialize prev_ga_tag before use	2020-10-29 09:57:28 +01:00
trace.h	KVM: nVMX: trace nested VM-Enter failures detected by H/W	2019-09-11 17:34:17 +02:00
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: don't expose MSR_IA32_UMWAIT_CONTROL unconditionally	2020-11-18 19:20:21 +01:00
x86.h	KVM: x86: Use gpa_t for cr2/gpa to fix TDP support on 32-bit KVM	2020-02-11 04:35:53 -08:00