Re: [RFC Part1 PATCH v3 04/17] x86/mm: Don't attempt to encrypt initrd under SEV

Borislav Petkov
2017-07-26T14:44:50Z

On Mon, Jul 24, 2017 at 02:07:44PM -0500, Brijesh Singh wrote:
> From: Tom Lendacky <thomas.lendacky@amd.com>
>
> When SEV is active the initrd/initramfs will already have already been
> placed in memory encyrpted so do not try to encrypt it.
>
> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
> ---
> arch/x86/kernel/setup.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
> index 0bfe0c1..01d56a1 100644
> --- a/arch/x86/kernel/setup.c
> +++ b/arch/x86/kernel/setup.c
> @@ -379,9 +379,11 @@ static void __init reserve_initrd(void)
> * If SME is active, this memory will be marked encrypted by the
> * kernel when it is accessed (including relocation). However, the
> * ramdisk image was loaded decrypted by the bootloader, so make
> - * sure that it is encrypted before accessing it.
> + * sure that it is encrypted before accessing it. For SEV the
> + * ramdisk will already be encyrpted, so only do this for SME.
^^^^^^^^^
Please introduce a spellchecker into your patch creation workflow.

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Regards/Gruss,
Boris.

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