Re: [PATCH] x86: Don't add RNG seed to Linux cmdline for SEV guests

[Jason A. Donenfeld]

On Wed, Feb 8, 2023 at 12:49 PM Dov Murik <dovmurik@linux.ibm.com> wrote:
>   /*
>    * Add the NUL terminator, some padding for the microvm cmdline fiddling
>    * hack, and then align to 16 bytes as a paranoia measure
>    */
>   cmdline_size = (strlen(machine->kernel_cmdline) + 1 +
>                   VIRTIO_CMDLINE_TOTAL_MAX_LEN + 16) & ~15;
>   /* Make a copy, since we might append arbitrary bytes to it later. */
>   kernel_cmdline = g_strndup(machine->kernel_cmdline, cmdline_size);

We could safely skip this part on !microvm, which I think might handle
the SEV case?