sev_guest_df_flush(9)

💖 NAME 💖

Okay bestie, this is sev_guest_df_flush(9) from the Kernel API Manual — and it's literally the page for the SEV DF_FLUSH command ✨

sev_guest_df_flush — perform SEV DF_FLUSH command. Periodt.

✨ SYNOPSIS ✨

int sev_guest_df_flush (int *error );

🎀 ARGUMENTS 🎀

• error — the source literally labels this one -- undescribed --. That's the whole entry, bestie 🫶 no extra lore, no invented meaning.

🔥 RETURN 🔥

Here's the vibe check on what comes back:

• 0 — if the sev successfully processed the command. Slay.
• -ENODEV — if the sev device is not available.
• -ENOTSUPP — if the sev does not support SEV.
• -ETIMEDOUT — if the sev command timed out.
• -EIO — if the sev returned a non-zero return code.

🌈 SEE ALSO 🌈

Kernel file ./include/linux/psp-sev.h, plus the whole friend group:

• 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)
• struct sev_platform_init_args(9)
• struct sev_data_snp_commit(9)
• struct sev_data_snp_feature_info(9)
• struct sev_data_snp_verify_mitigation(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_decommission(9)
• sev_do_cmd(9)

That's a wrap 💅 Source/version: ./include/linux · date: October 2026 · page: sev_guest_df_flush(9) — mwah, go be iconic 🎀✨