pseries_eeh_set_option(9)

💅 pseries_eeh_set_option(9) — like, the Kernel API Manual page, but make it make sense 🎀

okay bestie, so this is a page out of the Kernel API Manual and it's literally about pseries_eeh_set_option — the function that flips the big switches on EEH. no cap, it's a small one, so grab a strawberry drink and let's go 🍓

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✨ NAME ✨

pseries_eeh_set_option — initializes EEH, or re-enables MMIO/DMA 🫶

✨ SYNOPSIS ✨

int pseries_eeh_set_option (struct eeh_pe *pe , int option );

✨ ARGUMENTS ✨

• pe — the EEH PE 💖 (yes, that's the whole description, she's a woman of few words)
• option — the operation you want issued

✨ DESCRIPTION ✨

so this function is the one that controls the EEH functionality globally, like it's the main character of EEH settings 👑

right now, per PAPR, these are the options that are supported — and yes, all four, no skipping:

• Enable EEH
• Disable EEH
• Enable MMIO
• Enable DMA

that's the whole menu. that's the vibe. periodt ✨

✨ SEE ALSO ✨

peep the kernel file itself, it's right here: ./arch/powerpc/platforms/pseries/eeh_pseries.c

and the whole rest of the friend group 🦋:

• pseries_eeh_get_pe_config_addr(9)
• pseries_eeh_phb_reset(9)
• pseries_eeh_phb_configure_bridge(9)
• pseries_eeh_pe_get_parent(9)
• pseries_eeh_init_edev(9)
• pseries_eeh_init_edev_recursive(9)
• pseries_eeh_get_state(9)
• pseries_eeh_reset(9)
• pseries_eeh_get_log(9)
• pseries_eeh_configure_bridge(9)
• pseries_eeh_read_config(9)
• pseries_eeh_write_config(9)
• pseries_eeh_err_inject(9)
• eeh_pseries_init(9)

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and that's the page, babe 💜 it lives over in ./arch/powerpc/platforms/pseries, dropped in October 2026, and it's filed under that pseries_eeh_set_option(9) name. go off, icon 🌈⭐