linux-kernel - Re: [PATCH] efi/tpm: Pass correct address to memblock

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Date:   Mon, 24 Oct 2022 00:59:10 +0300
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Jerry Snitselaar <jsnitsel@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org,
        Matthew Garrett <mjg59@...gle.com>,
        Bartosz Szczepanek <bsz@...ihalf.com>,
        Ard Biesheuvel <ardb@...nel.org>
Subject: Re: [PATCH] efi/tpm: Pass correct address to memblock_reserve

On Sat, Oct 22, 2022 at 08:23:52AM -0700, Jerry Snitselaar wrote:
> memblock_reserve() expects a physical address, but the address being
> passed for the TPM final events log is what was returned from
> early_memremap(). This results in something like the following:
> 
> [    0.000000] memblock_reserve: [0xffffffffff2c0000-0xffffffffff2c00e4] efi_tpm_eventlog_init+0x324/0x370
> 
> Pass the address from efi like what is done for the TPM events log.
> 
> Fixes: c46f3405692d ("tpm: Reserve the TPM final events table")
> Cc: Matthew Garrett <mjg59@...gle.com>
> Cc: Jarkko Sakkinen <jarkko@...nel.org>
> Cc: Bartosz Szczepanek <bsz@...ihalf.com>
> Cc: Ard Biesheuvel <ardb@...nel.org>
> Signed-off-by: Jerry Snitselaar <jsnitsel@...hat.com>
> ---
>  drivers/firmware/efi/tpm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/firmware/efi/tpm.c b/drivers/firmware/efi/tpm.c
> index 8f665678e9e3..e8d69bd548f3 100644
> --- a/drivers/firmware/efi/tpm.c
> +++ b/drivers/firmware/efi/tpm.c
> @@ -97,7 +97,7 @@ int __init efi_tpm_eventlog_init(void)
>  		goto out_calc;
>  	}
>  
> -	memblock_reserve((unsigned long)final_tbl,
> +	memblock_reserve(efi.tpm_final_log,
>  			 tbl_size + sizeof(*final_tbl));
>  	efi_tpm_final_log_size = tbl_size;
>  
> -- 
> 2.37.2
> 


Acked-by: Jarkko Sakkinen <jarkko@...nel.org>

BR, Jarkko