path: root/virt
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authorTom Lendacky <>2021-05-06 15:14:41 -0500
committerPaolo Bonzini <>2021-05-07 06:06:23 -0400
commitce7ea0cfdc2e9ff31d12da31c3226deddb9644f5 (patch)
tree921b38c2bc256a037a897cdb62889aeab8f3fd4f /virt
parent368340a3c7d9a207bfe544721d464b7109be8eae (diff)
KVM: SVM: Move GHCB unmapping to fix RCU warning
When an SEV-ES guest is running, the GHCB is unmapped as part of the vCPU run support. However, kvm_vcpu_unmap() triggers an RCU dereference warning with CONFIG_PROVE_LOCKING=y because the SRCU lock is released before invoking the vCPU run support. Move the GHCB unmapping into the prepare_guest_switch callback, which is invoked while still holding the SRCU lock, eliminating the RCU dereference warning. Fixes: 291bd20d5d88 ("KVM: SVM: Add initial support for a VMGEXIT VMEXIT") Reported-by: Borislav Petkov <> Signed-off-by: Tom Lendacky <> Message-Id: <> Signed-off-by: Paolo Bonzini <>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions