KVM: nVMX: Truncate base/index GPR value on address calc in !64-bit

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Drop bits 63:32 of the base and/or index GPRs when calculating the
effective address of a VMX instruction memory operand.  Outside of 64-bit
mode, memory encodings are strictly limited to E*X and below.

Fixes: 064aea7747 ("KVM: nVMX: Decoding memory operands of VMX instructions")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210422022128.3464144-7-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2021-04-21 19:21:25 -07:00 • committed by Paolo Bonzini

parent ee050a5775

commit 82277eeed6

1 changed files with 2 additions and 2 deletions

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arch/x86/kvm/vmx/nested.c

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