KVM: nVMX: Add a helper to identify low-priority #DB traps

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Add a helper to identify "low"-priority #DB traps, i.e. trap-like #DBs
that aren't TSS T flag #DBs, and tweak the related code to operate on any
queued exception.  A future commit will separate exceptions that are
intercepted by L1, i.e. cause nested VM-Exit, from those that do NOT
trigger nested VM-Exit.  I.e. there will be multiple exception structs
and multiple invocations of the helpers.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Link: https://lore.kernel.org/r/20220830231614.3580124-20-seanjc@google.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2022-08-30 23:16:06 +00:00 • committed by Paolo Bonzini

parent 28360f8870

commit 2b384165f4

1 changed files with 17 additions and 6 deletions

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arch/x86/kvm/vmx/nested.c

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