KVM: TDX: Save and restore IA32_DEBUGCTL

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Save the IA32_DEBUGCTL MSR before entering a TDX VCPU and restore it
afterwards.  The TDX Module preserves bits 1, 12, and 14, so if no
other bits are set, no restore is done.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Message-ID: <20250129095902.16391-12-adrian.hunter@intel.com>
Reviewed-by: Xiayao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Adrian Hunter 2025-01-29 11:59:00 +02:00 • committed by Paolo Bonzini

parent 6d415778f1

commit 8af0990375

1 changed files with 10 additions and 1 deletions

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arch/x86/kvm/vmx/tdx.c

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