KVM: TDX: vcpu_run: save/restore host state(host kernel gs)

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On entering/exiting TDX vcpu, preserved or clobbered CPU state is different
from the VMX case. Add TDX hooks to save/restore host/guest CPU state.
Save/restore kernel GS base MSR.

Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20250129095902.16391-7-adrian.hunter@intel.com>
Reviewed-by: Xiayao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Isaku Yamahata 2025-01-29 11:58:55 +02:00 • committed by Paolo Bonzini

parent 81bf912b2c

commit 81bf40d54c

3 changed files with 66 additions and 2 deletions

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24

arch/x86/kvm/vmx/main.c

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40

arch/x86/kvm/vmx/tdx.c

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4

arch/x86/kvm/vmx/x86_ops.h

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