Viewing profile — andreiw

Dumb question, but how would it fare on a ppc64le box like the (OpenPower) Power9 Talos II? https://www.raptorcs.com/TALOSII/prerelease.php

On a related note, another interesting CPU design - http://multiclet.com/index.php/en/support/general-technical-...

Also 64-bit Arm...

Yeah I’d say that modern OoO Arm implementations (A57, A72, ...) are worth trying to speculate into trapped VFP state. Lazy FPU is definitly a thing everywhere. My hunch says that …

Not numerating it? Variant 6 is as good as anything...

Do we have PoC code? Has anyone tried attacking FP/SIMD state on other ISAs like Power or AArch64?

What are we calling this Spectre variant?

As usual, Carl Icahn...

Then tell your SiP to do better. On Arm the conditional speculation barrier couldn’t be more lightweight (CSDB).

“break”? no, but spectre is a confidentiality attack, and not even the only confidentiality attack that can be done... yes you could, but the noise floor won’t be great

Depends on how you define hardware and software. There are global workarounds that amount to crippling CPU behavior, to provide guarantees for code not written to be spectre safe. …

Considering the hardware mitigations aren’t some magic bullet, but are a “big hammer” that cripples CPU OoO behavior in crrtain ways for everything , software mitigations don’t see…

Anyone else use the hex “assembler” on the TI-83+? After a while you just memorize the hex opcodes for z80 insns... TI-GCC for my TI-89 was nice...a few years back I tried to dust-…

Not yet... the good news is that iPXE supports the SMSC USB NIC on the Pi. I don't know if iPXE will work out of the box, but I certainly intend on porting the iPXE NIC driver as a…

Maybe. I'll look.

There's a few problems there, but these amount to UEFI being a terrible, abominable spec. The specification doesn't say that an implementation must not change the memory map inside…

Author here, feel free to AMA.

If you run the “mmap” command in UEFI shell, and count the memory regions marked as Runtime Code and Runtime Data, that will give you the total resident (after booting OS) memory f…

Yep, and being able to claim that U-boot can boot Windows (on x64 or Arm) would be a really strong statement around completeness. I hope someone gets to work on it soon (Alexander …

RaspberriPiPkg can’t boot Raspbian today, since the latter is 32-bit. Can boot stock 64-bit SUSE and Ubuntu, though.

A lot of it really is code quality issues, both in the core and some of the contributed I/O drivers.

Author here. If you wanted to run you own drivers, or had code written specifically against protocols exported by Tiano components I believe the answer is - yes. RaspberryPiPkg is …

Actually, good question to flip back to you. As a random person stumbling upon this, what value would you assign to it? What could you imagine the end goal to be?

Arm derived: 32-bit Cortex-A and a Cortex-M for radio. Curious what the security arch is...