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KVM: x86: report sev_pin_memory errors with PTR_ERR
Callers of sev_pin_memory() treat NULL differently: sev_launch_secret()/svm_register_enc_region() return -ENOMEM sev_dbg_crypt() returns -EFAULT. Switching to ERR_PTR() preserves the error and enables cleaner reporting of different kinds of failures. Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Paolo Bonzini
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Jul 8, 2020
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