ENUM CC_ATTR(9)

💖 NAME 💖

enum cc_attr — Confidential computing attributes ✨ This is the enum cc_attr(9) page from the Kernel API Manual, bestie. It’s the whole vibe of what confidential-computing features are live right now. 🫶

🦋 SYNOPSIS 🦋

enum cc_attr {
    CC_ATTR_MEM_ENCRYPT ,
    CC_ATTR_HOST_MEM_ENCRYPT ,
    CC_ATTR_GUEST_MEM_ENCRYPT ,
    CC_ATTR_GUEST_STATE_ENCRYPT ,
    CC_ATTR_GUEST_UNROLL_STRING_IO ,
    CC_ATTR_GUEST_SEV_SNP ,
    CC_ATTR_GUEST_SNP_SECURE_TSC ,
    CC_ATTR_HOST_SEV_SNP ,
    CC_ATTR_SNP_SECURE_AVIC

};

✨ Constants ✨

• CC_ATTR_MEM_ENCRYPT — Memory encryption is active 💅 The platform/OS is running with active memory encryption. This includes running either as a bare-metal system or a hypervisor and actively using memory encryption or as a guest/virtual machine and actively using memory encryption. Examples include SME, SEV and SEV-ES. 🎀
• CC_ATTR_HOST_MEM_ENCRYPT — Host memory encryption is active 🫶 The platform/OS is running as a bare-metal system or a hypervisor and actively using memory encryption. Examples include SME. 🦋
• CC_ATTR_GUEST_MEM_ENCRYPT — Guest memory encryption is active 🌸 The platform/OS is running as a guest/virtual machine and actively using memory encryption. Examples include SEV and SEV-ES. ✨
• CC_ATTR_GUEST_STATE_ENCRYPT — Guest state encryption is active 🔥 The platform/OS is running as a guest/virtual machine and actively using memory encryption and register state encryption. Examples include SEV-ES. 💜
• CC_ATTR_GUEST_UNROLL_STRING_IO — String I/O is implemented with IN/OUT instructions 🎀 The platform/OS is running as a guest/virtual machine and uses IN/OUT instructions in place of string I/O. Examples include TDX guest & SEV. 💅
• CC_ATTR_GUEST_SEV_SNP — Guest SNP is active. 👑 The platform/OS is running as a guest/virtual machine and actively using AMD SEV-SNP features. ⭐
• CC_ATTR_GUEST_SNP_SECURE_TSC — SNP Secure TSC is active. 💜 The platform/OS is running as a guest/virtual machine and actively using AMD SEV-SNP Secure TSC feature. 🦋
• CC_ATTR_HOST_SEV_SNP — AMD SNP enabled on the host. 🌈 The host kernel is running with the necessary features enabled to run SEV-SNP guests. 🫶
• CC_ATTR_SNP_SECURE_AVIC — Secure AVIC mode is active. 🔥 The host kernel is running with the necessary features enabled to run SEV-SNP guests with full Secure AVIC capabilities. 👑

🌸 Description 🌸

These attributes represent confidential computing features that are currently active. Literally the current-status checklist, no cap. ✅

🔗 SEE ALSO 🔗

• Kernel file ./include/linux/cc_platform.h
• cc_platform_has(9)

That’s the whole page, bestie 💖 — it came from ./include/linux, dated October 2026, and it’s the enum cc_attr(9) page. Periodt. 🎀