Re: [PATCH v7] hw/i386: pass RNG seed via setup_data entry

[Paolo Bonzini <pbonzini@redhat.com>]

On 7/21/22 14:56, Jason A. Donenfeld wrote:
> Tiny machines optimized for fast boot time generally don't use EFI,
> which means a random seed has to be supplied some other way. For this
> purpose, Linux (≥5.20) supports passing a seed in the setup_data table
> with SETUP_RNG_SEED, specially intended for hypervisors, kexec, and
> specialized bootloaders. The linked commit shows the upstream kernel
> implementation.
> 
> At Paolo's request, we don't pass these to versioned machine types ≤7.0.
> 
> Link: https://git.kernel.org/tip/tip/c/68b8e9713c8
> Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
> Cc: Paolo Bonzini <pbonzini@redhat.com>
> Cc: Richard Henderson <richard.henderson@linaro.org>
> Cc: Eduardo Habkost <eduardo@habkost.net>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
> Cc: Laurent Vivier <laurent@vivier.eu>
> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

LGTM.

Paolo