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2ca1a06a54
linux/arch/x86/kvm
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Venkatesh Srinivas 2ca1a06a54 kvm: Handle reads of SandyBridge RAPL PMU MSRs rather than injecting #GP 
Linux 3.14 unconditionally reads the RAPL PMU MSRs on boot, without handling
General Protection Faults on reading those MSRs. Rather than injecting a #GP,
which prevents boot, handle the MSRs by returning 0 for their data. Zero was
checked to be safe by code review of the RAPL PMU driver and in discussion
with the original driver author (eranian@google.com).

Signed-off-by: Venkatesh Srinivas <venkateshs@google.com>
Signed-off-by: Jon Cargille <jcargill@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <20200416184254.248374-1-jcargill@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-04-17 11:06:33 -04:00
..
mmu ARM: 2020-04-02 15:13:15 -07:00
svm KVM: SVM: Fix __svm_vcpu_run declaration. 2020-04-15 12:08:39 -04:00
vmx kvm: nVMX: match comment with return type for nested_vmx_exit_reflected 2020-04-15 12:08:35 -04:00
cpuid.c KVM: x86: Fix BUILD_BUG() in __cpuid_entry_get_reg() w/ CONFIG_UBSAN=y 2020-03-31 10:51:45 -04:00
cpuid.h KVM: x86: Fix BUILD_BUG() in __cpuid_entry_get_reg() w/ CONFIG_UBSAN=y 2020-03-31 10:51:45 -04:00
debugfs.c KVM: no need to check return value of debugfs_create functions 2019-08-05 12:55:49 +02:00
emulate.c ARM: 2020-04-02 15:13:15 -07:00
hyperv.c KVM: x86: Copy kvm_x86_ops by value to eliminate layer of indirection 2020-03-31 10:48:08 -04:00
hyperv.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499 2019-06-19 17:09:53 +02:00
i8254.c KVM: x86: Fix print format and coding style 2020-03-16 17:57:08 +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 2020-01-27 19:59:37 +01:00
ioapic.c KVM: x86: Initializing all kvm_lapic_irq fields in ioapic_write_indirect 2020-03-14 10:46:01 +01:00
ioapic.h KVM: X86: Move irrelevant declarations out of ioapic.h 2020-01-08 17:33:14 +01:00
irq_comm.c KVM: x86: don't notify userspace IOAPIC on edge-triggered interrupt EOI 2020-02-21 18:04:57 +01:00
irq.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 320 2019-06-05 17:37:05 +02:00
irq.h KVM: X86: Move irrelevant declarations out of ioapic.h 2020-01-08 17:33:14 +01:00
Kconfig KVM: fix Kconfig menu text for -Werror 2020-03-05 15:27:43 +01:00
kvm_cache_regs.h KVM: x86: Copy kvm_x86_ops by value to eliminate layer of indirection 2020-03-31 10:48:08 -04:00
kvm_emulate.h ARM: 2020-04-02 15:13:15 -07:00
lapic.c KVM: X86: Filter out the broadcast dest for IPI fastpath 2020-04-07 08:34:16 -04:00
lapic.h KVM: X86: Filter out the broadcast dest for IPI fastpath 2020-04-07 08:34:16 -04:00
Makefile KVM: SVM: Split svm_vcpu_run inline assembly to separate file 2020-04-03 10:53:57 -04:00
mmu_audit.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499 2019-06-19 17:09:53 +02:00
mmu.h KVM: x86: Copy kvm_x86_ops by value to eliminate layer of indirection 2020-03-31 10:48:08 -04:00
mmutrace.h KVM: x86: fix incorrect comparison in trace event 2020-02-20 18:13:44 +01:00
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: Copy kvm_x86_ops by value to eliminate layer of indirection 2020-03-31 10:48:08 -04:00
pmu.h KVM: x86: Copy kvm_x86_ops by value to eliminate layer of indirection 2020-03-31 10:48:08 -04:00
trace.h ARM: 2020-04-02 15:13:15 -07:00
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: Handle reads of SandyBridge RAPL PMU MSRs rather than injecting #GP 2020-04-17 11:06:33 -04:00
x86.h KVM: x86: Copy kvm_x86_ops by value to eliminate layer of indirection 2020-03-31 10:48:08 -04:00