Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer

On Tue, 14 Aug 2007, Andi Kleen wrote:

> > But they use GFP_DMA right now and drivers cannot use DMA32 if they want 
> 
> The way it was originally designed was that they use GFP_DMA32,
> which would map to itself on x86-64, to GFP_DMA on ia64 and to
> GFP_KERNEL on i386. Unfortunately that seems to have bitrotted
> (perhaps I should have better documented it) 

The DMA boundaries are hardware depending. A 4GB boundary 
may not make sense on certain platforms. 

> > to be cross platforms compatible? Doesnt the dma API completely do away 
> > with these things?
> 
> No GFP_DMA32 in my current plan is still there.

AFAIK GFP_DMA32 is a x86_64 special that would be easy to remove. Dealing 
with physical boundaries is current done via the dma interface right? Lets 
keep it there?

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

---

• Follow-Ups:
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Andi Kleen <[email protected]>

• References:
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Andi Kleen <[email protected]>
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Christoph Lameter <[email protected]>
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Andi Kleen <[email protected]>
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Christoph Lameter <[email protected]>
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Andi Kleen <[email protected]>
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Christoph Lameter <[email protected]>
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Andi Kleen <[email protected]>
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Christoph Lameter <[email protected]>
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Andi Kleen <[email protected]>
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Christoph Lameter <[email protected]>
  • Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
    • From: Andi Kleen <[email protected]>

• Prev by Date: Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
• Next by Date: [PATCH] hres_timers_resume must block interrupts
• Previous by thread: Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
• Next by thread: Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]