Von Sicherheitsdomänen Gemeinsam Benutzte Seitenkanalschutz-Cache-Leitungen

Details

Veröffentlichungs-Nr.

EP4797105

Anmeldetag

17. Dezember 2025

Veröffentlichung

26. August 2026

Rechtsraum

EP

IPC

G06F12/084, G06F12/14

Abstract

A processor or other apparatus of an aspect includes a cache to store cache lines and a circuitry coupled with the cache. The circuitry is to receive a memory access request for data at a memory address from a first security domain. The data at the memory address is to be shared by a plurality of security domains including the first security domain. A side-channel protection is to be used for the data. The circuitry is to implement the side-channel protection for the data. This includes not providing a cache line corresponding to the memory address from the cache to the first security domain, when the cache line exists in the cache and is valid, if the first security domain has not previously accessed the cache line in the cache. Other processors, methods, systems, and instructions are disclosed.

Anmelder

Firma

Intel Corporation

Land

🇺🇸 USA

Fachgebiete