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Description: KVM: SVM: Make sure GHCB is mapped before updating
References:
Notes:
 carnil> Introduced in f1c6366e3043 ("KVM: SVM: Add required changes to support
 carnil> intercepts under SEV-ES")
 carnil> 647daca25d24 ("KVM: SVM: Add support for booting APs in an SEV-ES guest").
 carnil> Vulnerable versions: 5.11-rc1 5.11-rc3.
Bugs:
upstream: released (5.13-rc1) [a3ba26ecfb569f4aa3f867e80c02aa65f20aadad]
6.7-upstream-stable: N/A "Fixed before branching point"
6.6-upstream-stable: N/A "Fixed before branching point"
6.1-upstream-stable: N/A "Fixed before branching point"
5.10-upstream-stable: N/A "Vulnerable code not present"
4.19-upstream-stable: N/A "Vulnerable code not present"
sid: N/A "Vulnerable code not present"
6.1-bookworm-security: N/A "Fixed before branching point"
5.10-bullseye-security: N/A "Vulnerable code not present"
4.19-buster-security: N/A "Vulnerable code not present"

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