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Donenfeld" Date: Mon, 14 Feb 2022 15:05:03 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH RFC v0] random: block in /dev/urandom To: Joshua Kinard Cc: LKML , Linux Crypto Mailing List , Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-riscv , Geert Uytterhoeven , linux-m68k , Thomas Bogendoerfer , "open list:BROADCOM NVRAM DRIVER" , Dominik Brodowski , Eric Biggers , Ard Biesheuvel , Arnd Bergmann , Thomas Gleixner , Andy Lutomirski , Kees Cook , Lennart Poettering , Linus Torvalds , Greg Kroah-Hartman , "Theodore Ts'o" Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Hi Joshua, Thanks a lot for the historical background. On Sun, Feb 13, 2022 at 12:06 AM Joshua Kinard wrote: > The R6000/R6000A CPU only ever existed in systems in the late 1980's that > were fairly large, and I don't think there is a complete, working unit out > there that can actually boot up, let alone boot a Linux kernel. So from what you've written, it sounds like MIPS is actually not a problem here. So the only systems we're actually talking about without a good cycle counter are non-Amiga m68k? If so, that'd be a pretty terrific finding. It'd mean that this idea can move forward, and we only need to worry about some m68k museum pieces with misconfigured userspaces... Jason