kvm: vmx: Check value written to IA32_BNDCFGS

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commit 4531662d1a upstream.

Bits 11:2 must be zero and the linear addess in bits 63:12 must be
canonical. Otherwise, WRMSR(BNDCFGS) should raise #GP.

Fixes: 0dd376e709 ("KVM: x86: add MSR_IA32_BNDCFGS to msrs_to_save")
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jim Mattson 2017-05-23 11:52:54 -07:00 • committed by Greg Kroah-Hartman

parent fab777e70c

commit 07592d6225

2 changed files with 5 additions and 0 deletions

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arch/x86/include/asm/msr-index.h

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3

arch/x86/kvm/vmx.c

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