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| author | Sean Christopherson <seanjc@google.com> | 2021-04-22 05:11:16 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-04-26 12:27:14 +0300 |
| commit | 4daf2a1c45ace29e3bacabdef0d4c7920e1f1ea4 (patch) | |
| tree | bb6dc185f6dd9782649f226d5b5332f76a31692d /arch/x86/include/asm/mem_encrypt.h | |
| parent | 013380782d4d675d4f8d9891ca7d010795152dc8 (diff) | |
| download | linux-4daf2a1c45ace29e3bacabdef0d4c7920e1f1ea4.tar.xz | |
x86/sev: Drop redundant and potentially misleading 'sev_enabled'
Drop the sev_enabled flag and switch its one user over to sev_active().
sev_enabled was made redundant with the introduction of sev_status in
commit b57de6cd1639 ("x86/sev-es: Add SEV-ES Feature Detection").
sev_enabled and sev_active() are guaranteed to be equivalent, as each is
true iff 'sev_status & MSR_AMD64_SEV_ENABLED' is true, and are only ever
written in tandem (ignoring compressed boot's version of sev_status).
Removing sev_enabled avoids confusion over whether it refers to the guest
or the host, and will also allow KVM to usurp "sev_enabled" for its own
purposes.
No functional change intended.
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210422021125.3417167-7-seanjc@google.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/mem_encrypt.h')
| -rw-r--r-- | arch/x86/include/asm/mem_encrypt.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/include/asm/mem_encrypt.h b/arch/x86/include/asm/mem_encrypt.h index 31c4df123aa0..9c80c68d75b5 100644 --- a/arch/x86/include/asm/mem_encrypt.h +++ b/arch/x86/include/asm/mem_encrypt.h @@ -20,7 +20,6 @@ extern u64 sme_me_mask; extern u64 sev_status; -extern bool sev_enabled; void sme_encrypt_execute(unsigned long encrypted_kernel_vaddr, unsigned long decrypted_kernel_vaddr, |