Re: [PATCH v8 34/40] x86/sev: add SEV-SNP feature detection/setup

[Borislav Petkov]

On Fri, Dec 10, 2021 at 09:43:26AM -0600, Brijesh Singh wrote:
> +static struct cc_blob_sev_info *snp_find_cc_blob(struct boot_params *bp)
> +{
> +	struct cc_blob_sev_info *cc_info;
> +
> +	/* Boot kernel would have passed the CC blob via boot_params. */
> +	if (bp->cc_blob_address) {
> +		cc_info = (struct cc_blob_sev_info *)
> +			  (unsigned long)bp->cc_blob_address;

No need to break that line.

> +		goto found_cc_info;
> +	}
> +
> +	/*
> +	 * If kernel was booted directly, without the use of the
> +	 * boot/decompression kernel, the CC blob may have been passed via
> +	 * setup_data instead.
> +	 */
> +	cc_info = snp_find_cc_blob_setup_data(bp);
> +	if (!cc_info)
> +		return NULL;
> +
> +found_cc_info:
> +	if (cc_info->magic != CC_BLOB_SEV_HDR_MAGIC)
> +		sev_es_terminate(1, GHCB_SNP_UNSUPPORTED);

snp_abort() if you're gonna call it that.

-- 
Regards/Gruss,
    Boris.

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