linux-kernel - Re: [PATCH 1/4] crypto: ccp - Fix SEV

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Message-ID: <0202da2c-a1ea-df2a-6544-f2f8a93865fc@amd.com>
Date:   Fri, 29 Oct 2021 08:41:39 -0500
From:   Tom Lendacky <thomas.lendacky@....com>
To:     Peter Gonda <pgonda@...gle.com>
Cc:     David Rientjes <rientjes@...gle.com>,
        Brijesh Singh <brijesh.singh@....com>,
        Marc Orr <marcorr@...gle.com>, Joerg Roedel <jroedel@...e.de>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        John Allen <john.allen@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Paolo Bonzini <pbonzini@...hat.com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] crypto: ccp - Fix SEV_INIT error logging on init

On 10/28/21 12:57 PM, Peter Gonda wrote:
> Currently only the firmware error code is printed. This is incomplete
> and also incorrect as error cases exists where the firmware is never
> called and therefore does not set an error code. This change zeros the
> firmware error code in case the call does not get that far and prints
> the return code for non firmware errors.
> 
> Signed-off-by: Peter Gonda <pgonda@...gle.com>
> Acked-by: David Rientjes <rientjes@...gle.com>
> Cc: Tom Lendacky <thomas.lendacky@....com>
> Cc: Brijesh Singh <brijesh.singh@....com>
> Cc: Marc Orr <marcorr@...gle.com>
> Cc: Joerg Roedel <jroedel@...e.de>
> Cc: Herbert Xu <herbert@...dor.apana.org.au>
> Cc: David Rientjes <rientjes@...gle.com>
> Cc: John Allen <john.allen@....com>
> Cc: "David S. Miller" <davem@...emloft.net>
> Cc: Paolo Bonzini <pbonzini@...hat.com> (
> Cc: linux-crypto@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org

Acked-by: Tom Lendacky <thomas.lendacky@....com>

> ---
>   drivers/crypto/ccp/sev-dev.c | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c
> index 2ecb0e1f65d8..ec89a82ba267 100644
> --- a/drivers/crypto/ccp/sev-dev.c
> +++ b/drivers/crypto/ccp/sev-dev.c
> @@ -1065,7 +1065,7 @@ void sev_pci_init(void)
>   {
>   	struct sev_device *sev = psp_master->sev_data;
>   	struct page *tmr_page;
> -	int error, rc;
> +	int error = 0, rc;
>   
>   	if (!sev)
>   		return;
> @@ -1104,7 +1104,8 @@ void sev_pci_init(void)
>   	}
>   
>   	if (rc) {
> -		dev_err(sev->dev, "SEV: failed to INIT error %#x\n", error);
> +		dev_err(sev->dev, "SEV: failed to INIT error %#x, rc %d\n",
> +			error, rc);
>   		return;
>   	}
>   
>