KVM: x86: Check CR3 GPA for validity regardless of vCPU mode

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Check CR3 for an invalid GPA even if the vCPU isn't in long mode.  For
bigger emulation flows, notably RSM, the vCPU mode may not be accurate
if CR0/CR4 are loaded after CR3.  For MOV CR3 and similar flows, the
caller is responsible for truncating the value.

Fixes: 660a5d517a ("KVM: x86: save/load state on SMM switch")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210422022128.3464144-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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

parent d0fe7b6404

commit 886bbcc7a5

1 changed files with 8 additions and 3 deletions

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arch/x86/kvm/x86.c

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