linux-kernel - Re: [PATCH v1] ata: ahci: Disable SXS for Hisilicon Kunpeng920

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]

Date:   Fri, 12 Mar 2021 07:27:50 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     Luo Jiaxing <luojiaxing@...wei.com>
Cc:     linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxarm@...neuler.org, john.garry@...wei.com,
        yangxingui@...wei.com
Subject: Re: [PATCH v1] ata: ahci: Disable SXS for Hisilicon Kunpeng920

On 3/12/21 3:24 AM, Luo Jiaxing wrote:
> From: Xingui Yang <yangxingui@...wei.com>
> 
> On Hisilicon Kunpeng920, ESP is set to 1 by default for all ports of
> SATA controller. In some scenarios, some ports are not external SATA ports,
> and it cause disks connected to these ports to be identified as removable
> disks. So disable the SXS capability on the software side to prevent users
> from mistakenly considering non-removable disks as removable disks and
> performing related operations.
> 
> Signed-off-by: Xingui Yang <yangxingui@...wei.com>
> Signed-off-by: Luo Jiaxing <luojiaxing@...wei.com>
> Reviewed-by: John Garry <john.garry@...wei.com>
> ---
>  drivers/ata/ahci.c    | 5 +++++
>  drivers/ata/ahci.h    | 1 +
>  drivers/ata/libahci.c | 5 +++++
>  3 files changed, 11 insertions(+)
> 
> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
> index 00ba8e5..33192a8 100644
> --- a/drivers/ata/ahci.c
> +++ b/drivers/ata/ahci.c
> @@ -1772,6 +1772,11 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
>  		hpriv->flags |= AHCI_HFLAG_NO_DEVSLP;
>  
>  #ifdef CONFIG_ARM64
> +	if (pdev->vendor == PCI_VENDOR_ID_HUAWEI &&
> +	    pdev->device == 0xa235 &&
> +	    pdev->revision < 0x30)
> +		hpriv->flags |= AHCI_HFLAG_NO_SXS;

Is this controller arm exclusive?

-- 
Jens Axboe