STRUCT SEV_DATA_SNP_VERIFY_MITIGATION(9)

✨ struct sev_data_snp_verify_mitigation(9) ✨

okay so bestie, welcome to the Kernel API Manual 💅 and lemme tell you, this page is literally all about struct sev_data_snp_verify_mitigation — the struct that carries the params for the SNP_VERIFY_MITIGATION command. she's giving very specific, very secure, very SNP energy 👑

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🎀 NAME 🎀

struct sev_data_snp_verify_mitigation — the SNP_VERIFY_MITIGATION command params 💖

Like, that's her whole job. she holds the command params. no cap.

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🌸 SYNOPSIS 🌸

struct sev_data_snp_verify_mitigation {
    u32 length;
    u16 subcommand;
    u16 rsvd;
    u64 vector;
    u32 dst_paddr_en : 1, src_paddr_en : 1, rsvd1 : 30;
    u8 rsvd2[4];
    u64 src_paddr;
    u64 dst_paddr;
    u8 rsvd3[24];
 };

lowkey beautiful. bitfields and everything 😭✨

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🦋 Members 🦋

• length — the length of the command buffer that the PSP reads, periodt. 📏
• subcommand — the mitigation sub-command that the firmware is supposed to execute. here's the tea 🍓:
  • REQ_STATUS: 0x0 — request status about the mitigations that are currently supported and verified
  • REQ_VERIFY: 0x1 — request to initiate a verification mitigation operation on one specific mitigation
• rsvd — reserved 🙈
• vector — the bit that specifies which vulnerability mitigation to process 🎯
• dst_paddr_en — destination paddr enabled ✅
• src_paddr_en — source paddr enabled ✅
• rsvd1 — reserved 🙈
• rsvd2 — reserved 🙈
• src_paddr — the source address for optional input data 📥
• dst_paddr — the destination address to write the result 📤
• rsvd3 — reserved 🙈

ngl bestie, there are a lot of reserved fields here. do not touch them. they are not for you. they are reserved. respect the rsvd 💀

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🧚 SEE ALSO 🧚

Kernel file ./include/linux/psp-sev.h — and like, the entire sev squad, fr fr:

• struct sev_data_init(9)
• struct sev_data_init_ex(9)
• struct sev_data_pek_csr(9)
• struct sev_data_download_firmware(9)
• struct sev_data_get_id(9)
• struct sev_data_pdh_cert_export(9)
• struct sev_data_decommission(9)
• struct sev_data_activate(9)
• struct sev_data_deactivate(9)
• struct sev_data_guest_status(9)
• struct sev_data_launch_start(9)
• struct sev_data_launch_update_data(9)
• struct sev_data_launch_update_vmsa(9)
• struct sev_data_launch_measure(9)
• struct sev_data_launch_secret(9)
• struct sev_data_launch_finish(9)
• struct sev_data_send_start(9)
• struct sev_data_send_finish(9)
• struct sev_data_send_cancel(9)
• struct sev_data_receive_start(9)
• struct sev_data_receive_update_data(9)
• struct sev_data_receive_update_vmsa(9)
• struct sev_data_receive_finish(9)
• struct sev_data_dbg(9)
• struct sev_data_attestation_report(9)
• struct sev_data_snp_download_firmware(9)
• struct sev_data_snp_activate(9)
• struct sev_data_snp_addr(9)
• struct sev_data_snp_launch_start(9)
• struct sev_data_snp_launch_update(9)
• struct sev_data_snp_launch_finish(9)
• struct sev_data_snp_guest_status(9)
• struct sev_data_snp_page_reclaim(9)
• struct sev_data_snp_page_unsmash(9)
• struct sev_data_snp_dbg(9)
• struct sev_data_snp_guest_request(9)
• struct sev_data_snp_init_ex(9)
• struct sev_data_range(9)
• struct sev_data_range_list(9)
• struct sev_data_snp_shutdown_ex(9)
• sev_platform_init_args(9)
• struct sev_data_snp_commit(9)
• struct sev_data_snp_feature_info(9)
• struct sev_data_snp_verify_mitigation_dst(9)
• struct sev_snp_tcb_version_genoa_milan(9)
• struct sev_snp_tcb_version_turin(9)
• sev_module_init(9)
• sev_platform_init(9)
• sev_platform_status(9)
• sev_issue_cmd_external_user(9)
• sev_guest_deactivate(9)
• sev_guest_activate(9)
• sev_guest_df_flush(9)
• sev_guest_decommission(9)
• sev_do_cmd(9)

like, the whole friend group showed up to the party 🫶✨

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and that's the page!! mwah 💋 this one's from ./include/linux, dated October 2026 — so like, go forth and verify those mitigations, bestie. you got this 👑💜