From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Christoph Hellwig <hch@lst.de>
Cc: linuxppc-dev <linuxppc-dev@ozlabs.org>,
Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH 2/5] [POWERPC] 8xx: generic 8xx code arch/powerpc port
Date: Fri, 17 Nov 2006 09:48:43 +1100 [thread overview]
Message-ID: <1163717323.5940.407.camel@localhost.localdomain> (raw)
In-Reply-To: <20061115182316.GA20719@lst.de>
> But wha do you need this for anyway? It's not used anywhere currently,
> and it's not 8xx-specific at all?
>
> > +unsigned long va_to_phys(unsigned long address)
> > +{
> > + pte_t *pte;
> > +
> > + pte = va_to_pte(address);
> > + if (pte)
> > + return(((unsigned long)(pte_val(*pte)) & PAGE_MASK) | (address & ~(PAGE_MASK)));
> > + return (0);
> > +}
>
> Shouldn't you use virt_to_phys instead?
>
> Also for the last two I'd prefer if you'd find a way to avoid adding
> them.
I think those 2 are used for cases where they either have a non-linear
mapping a-la Amiga/APUS or in cases where they try to get addresses of
things in the vmalloc area no ?.
Ben.
next prev parent reply other threads:[~2006-11-16 22:48 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20061114012504.17455.13833.stgit@localhost.localdomain>
2006-11-14 1:28 ` [PATCH 1/5] [POWERPC] 8xx: platform-specific mmu updates Vitaly Bordug
2006-11-14 1:28 ` [PATCH 2/5] [POWERPC] 8xx: generic 8xx code arch/powerpc port Vitaly Bordug
2006-11-15 18:23 ` Christoph Hellwig
2006-11-15 23:36 ` Vitaly Bordug
2006-11-16 22:48 ` Benjamin Herrenschmidt [this message]
2006-11-17 6:49 ` Christoph Hellwig
2006-11-17 8:00 ` Christoph Hellwig
2006-11-18 1:24 ` Dan Malek
2006-11-20 10:24 ` Christoph Hellwig
2006-11-21 0:26 ` Dan Malek
2006-11-14 1:28 ` [PATCH 3/5] [POWERPC] 8xx: platform-related changes to the fsl_soc.c Vitaly Bordug
2006-11-14 2:21 ` Benjamin Herrenschmidt
2006-11-14 12:48 ` Vitaly Bordug
2006-11-14 1:28 ` [PATCH 4/5] [POWERPC] 8xx: powerpc port of core CPM, CPM PIC, etc Vitaly Bordug
2006-11-14 2:44 ` Benjamin Herrenschmidt
2006-11-14 1:28 ` [PATCH 5/5] [POWERPC] 8xx: Add mpc885ads support and common mpc8xx Vitaly Bordug
2006-11-14 2:47 ` Benjamin Herrenschmidt
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