kvm_s390_real_to_abs(9)

✨ NAME ✨

okay so bestie, this is kvm_s390_real_to_abs(9) from the Kernel API Manual — and it's literally the function that does one iconic little job: convert a guest real address to a guest absolute address. Here's the NAME-section tea, with zero details dropped:

• kvm_s390_real_to_abs — convert guest real address to guest absolute address
  • @vcpu — guest virtual cpu
  • @gra — guest real address

🦋 SYNOPSIS 🦋

like, the signature is right here, copy-paste safe and everything:

unsigned long kvm_s390_real_to_abs (struct kvm_vcpu *vcpu , unsigned long gra );

🎀 ARGUMENTS 🎀

• vcpu — literally -- undescribed -- in the source 😭 the manpage did not give us a description, so we're not making one up, bestie.
• gra — also -- undescribed -- 🙈 same energy, same lack of description. No invented lore here, periodt.

💖 DESCRIPTION 💖

Okay so the whole plot: it returns the guest absolute address that corresponds to the passed guest real address gra of a virtual guest cpu by applying its prefix. That's it — gra goes in, the prefix gets applied, and you get the guest absolute address back. slay ✨ No extra side quests, no invented behavior, just that.

🔥 SEE ALSO 🔥

the friend group / reference list, all present and accounted for:

• Kernel file ./arch/s390/kvm/s390/gaccess.h
• _kvm_s390_logical_to_effective(9)
• kvm_s390_logical_to_effective(9)
• put_guest_lc(9)
• write_guest_lc(9)
• read_guest_lc(9)
• write_guest_with_key(9)
• write_guest(9)
• read_guest_with_key(9)
• read_guest(9)
• read_guest_instr(9)
• write_guest_abs(9)
• read_guest_abs(9)
• write_guest_real(9)
• read_guest_real(9)

okay that's the whole page, bestie 🫶 source/version is ./arch/s390/kvm/s390, the date is October 2026, and the page name is kvm_s390_real_to_abs(9) — iconic, no notes 💅💖