netdev - Re: [PATCH v6 25/28] sfc: specify no dax when cxl region is created

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20241203143849.GI778635@gmail.com>
Date: Tue, 3 Dec 2024 14:38:49 +0000
From: Martin Habets <habetsm.xilinx@...il.com>
To: alejandro.lucero-palau@....com
Cc: linux-cxl@...r.kernel.org, netdev@...r.kernel.org,
	dan.j.williams@...el.com, martin.habets@...inx.com,
	edward.cree@....com, davem@...emloft.net, kuba@...nel.org,
	pabeni@...hat.com, edumazet@...gle.com, dave.jiang@...el.com,
	Alejandro Lucero <alucerop@....com>
Subject: Re: [PATCH v6 25/28] sfc: specify no dax when cxl region is created

On Mon, Dec 02, 2024 at 05:12:19PM +0000, alejandro.lucero-palau@....com wrote:
> 
> From: Alejandro Lucero <alucerop@....com>
> 
> The CXL memory should not be used by the host in any case except for
> what the driver allows. Tell the cxl core to not create a DAX device
> using the avoid dax at region creation time.
> 
> Signed-off-by: Alejandro Lucero <alucerop@....com>

Reviewed-by: Martin Habets <habetsm.xilinx@...il.com>

> ---
>  drivers/net/ethernet/sfc/efx_cxl.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c
> index 3e44c31daf36..71b32fc48ca7 100644
> --- a/drivers/net/ethernet/sfc/efx_cxl.c
> +++ b/drivers/net/ethernet/sfc/efx_cxl.c
> @@ -128,7 +128,7 @@ int efx_cxl_init(struct efx_probe_data *probe_data)
>  		goto err3;
>  	}
>  
> -	cxl->efx_region = cxl_create_region(cxl->cxlrd, cxl->cxled);
> +	cxl->efx_region = cxl_create_region(cxl->cxlrd, cxl->cxled, true);
>  	if (!cxl->efx_region) {
>  		pci_err(pci_dev, "CXL accel create region failed");
>  		rc = PTR_ERR(cxl->efx_region);
> -- 
> 2.17.1
> 
>