linux-kernel - Re: sparc/staging compile error

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: <3aaafc130811060606p1dfbf12cr8c0dc8cd310d0279@mail.gmail.com>
Date:	Thu, 6 Nov 2008 09:06:36 -0500
From:	"J.R. Mauro" <jrm8005@...il.com>
To:	"Paul Mackerras" <paulus@...ba.org>
Cc:	"Greg KH" <greg@...ah.com>,
	"Stephen Rothwell" <sfr@...b.auug.org.au>,
	LKML <linux-kernel@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	"William L. Irwin" <wli@...omorphy.com>, sparclinux@...r.kernel.org
Subject: Re: sparc/staging compile error

On Thu, Nov 6, 2008 at 5:32 AM, Paul Mackerras <paulus@...ba.org> wrote:
> Greg KH writes:
>
>> On Thu, Nov 06, 2008 at 04:36:26PM +1100, Stephen Rothwell wrote:
>> > Hi Greg,
>> >
>> > Today's tree from Linus gets the following error from a sparc
>> > allmodconfig build:
>> >
>> > ERROR: "___f_flush_cache_range" [drivers/staging/poch/poch.ko] undefined!
>>
>> Odd, is flush_cache_range() not allowed on the sparc platform?
>
> I'm curious, what is a driver doing calling flush_cache_range()?
> What does it expect it to do precisely?

It's part of the driver's ioctl. Relevant lines:

static int poch_ioctl(struct inode *inode, struct file *filp,
                      unsigned int cmd, unsigned long arg)
{
/* ---snip---*/
        case POCH_IOC_SYNC_GROUP_FOR_USER:
        case POCH_IOC_SYNC_GROUP_FOR_DEVICE:
                vms = find_vma(current->mm, arg);
                if (!vms)
                        /* Address not mapped. */
                        return -EINVAL;
                if (vms->vm_file != filp)
                        /* Address mapped from different device/file. */
                        return -EINVAL;

                flush_cache_range(vms, arg, arg + channel->group_size);


>
> Paul.
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/