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b91991bf6b
linux/arch/x86/kvm
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Krish Sadhukhan b91991bf6b KVM: nVMX: Check GUEST_DR7 on vmentry of nested guests 
According to section "Checks on Guest Control Registers, Debug Registers, and
and MSRs" in Intel SDM vol 3C, the following checks are performed on vmentry
of nested guests:

    If the "load debug controls" VM-entry control is 1, bits 63:32 in the DR7
    field must be 0.

In KVM, GUEST_DR7 is set prior to the vmcs02 VM-entry by kvm_set_dr() and the
latter synthesizes a #GP if any bit in the high dword in the former is set.
Hence this field needs to be checked in software.

Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Reviewed-by: Karl Heubaum <karl.heubaum@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-01-27 19:59:55 +01:00
..
mmu KVM: x86: fix overlap between SPTE_MMIO_MASK and generation 2020-01-23 09:50:34 +01:00
vmx KVM: nVMX: Check GUEST_DR7 on vmentry of nested guests 2020-01-27 19:59:55 +01:00
cpuid.c kvm/svm: PKU not currently supported 2020-01-27 19:59:35 +01:00
cpuid.h KVM: x86: Refactor and rename bit() to feature_bit() macro 2020-01-21 14:45:28 +01:00
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: Remove unused ctxt param from emulator's FPU accessors 2020-01-27 19:59:48 +01:00
hyperv.c KVM: x86: Protect kvm_hv_msr_[get|set]_crash_data() from Spectre-v1/L1TF attacks 2020-01-27 19:59:36 +01:00
hyperv.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499 2019-06-19 17:09:53 +02:00
i8254.c
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: x86: Protect ioapic_write_indirect() from Spectre-v1/L1TF attacks 2020-01-27 19:59:38 +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: LAPIC: micro-optimize fixed mode ipi delivery 2020-01-21 13:57:15 +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: x86: add host poll control msrs 2019-06-18 11:43:46 +02:00
kvm_cache_regs.h KVM: x86: Fold decache_cr3() into cache_reg() 2019-10-22 13:34:16 +02:00
lapic.c KVM: apic: short-circuit kvm_apic_accept_pic_intr() when pic intr is accepted 2020-01-27 19:59:45 +01:00
lapic.h KVM: X86: Fix callers of kvm_apic_match_dest() to use correct macros 2020-01-08 17:33:15 +01:00
Makefile KVM: x86: create mmu/ subdirectory 2019-11-21 12:03:50 +01:00
mmu_audit.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 499 2019-06-19 17:09:53 +02:00
mmu.h kvm: x86: mmu: Recovery of shattered NX large pages 2019-11-04 20:26:00 +01:00
mmutrace.h KVM: x86: Use gpa_t for cr2/gpa to fix TDP support on 32-bit KVM 2020-01-08 18:16:02 +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_amd.c KVM: x86/vPMU: Add lazy mechanism to release perf_event per vPMC 2019-11-15 11:44:10 +01:00
pmu.c Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 15:42:43 -08:00
pmu.h KVM: x86: Protect MSR-based index computations in pmu.h from Spectre-v1/L1TF attacks 2020-01-27 19:59:40 +01:00
svm.c kvm/svm: PKU not currently supported 2020-01-27 19:59:35 +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
x86.c KVM: nVMX: Check GUEST_DR7 on vmentry of nested guests 2020-01-27 19:59:55 +01:00
x86.h KVM: nVMX: Check GUEST_DR7 on vmentry of nested guests 2020-01-27 19:59:55 +01:00