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From: Franck Bui-Huu <vagabon.xyz@gmail.com>
To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: vagabon.xyz@gmail.com, ralf@linux-mips.org, ths@networkno.de,
	linux-mips@linux-mips.org, fbuihuu@gmail.com
Subject: Re: [PATCH 1/5] Make __pa() uses CPHYSADDR() if really needed
Date: Wed, 11 Oct 2006 18:01:43 +0200	[thread overview]
Message-ID: <452D1567.1050706@innova-card.com> (raw)
In-Reply-To: <20061012.003007.08076055.anemo@mba.ocn.ne.jp>

Atsushi Nemoto wrote:
> Here's my understanding.
> 
> CPHYSADDR --- used to convert a CKSEG0 or CKSEG1 to a physical
> address.  Be carefull when use it in 64-bit kernel.
> 
> __pa() --- inverse of __va(), of course :-) used to convert a kernel
> linear logical address to a physycal address.
> 
> virt_to_phys() --- synonym of __pa() ?

Well in my understanding __pa() is used during bootmem init. It deals with
initialisation issues and ugliness and that's what CPHYSADDR() actually
does. virt_to_phys() is used once everything is correctly setup.

> __pa() is used in many place indirectly via virt_to_page().
> 

what about make virt_to_page() use virt_to_phys() instead ?

		Franck

  reply	other threads:[~2006-10-11 16:02 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-10-11 12:08 [PATCH 0/5] Get ride of CPHYSADDR() in setup.c Franck Bui-Huu
2006-10-11 12:08 ` [PATCH 1/5] Make __pa() uses CPHYSADDR() if really needed Franck Bui-Huu
2006-10-11 13:33   ` Atsushi Nemoto
2006-10-11 14:15     ` Franck Bui-Huu
2006-10-11 15:30       ` Atsushi Nemoto
2006-10-11 16:01         ` Franck Bui-Huu [this message]
2006-10-11 17:07           ` Franck Bui-Huu
2006-10-12 10:05           ` Atsushi Nemoto
2006-10-12 11:49             ` Franck Bui-Huu
2006-10-12 12:37               ` Thiemo Seufer
2006-10-11 12:08 ` [PATCH 2/5] setup.c: get ride of CPHYSADDR() Franck Bui-Huu
2006-10-11 12:08 ` [PATCH 3/5] setup.c: clean up initrd related code Franck Bui-Huu
2006-10-13  8:23   ` Franck Bui-Huu
2006-10-11 12:08 ` [PATCH 4/5] Introduce __pa_symbol() Franck Bui-Huu
2006-10-11 15:34   ` Atsushi Nemoto
2006-10-11 16:13     ` Franck Bui-Huu
2006-10-12  9:48       ` Atsushi Nemoto
2006-10-12 11:57         ` Franck Bui-Huu
2006-10-12 14:27           ` Atsushi Nemoto
2006-10-11 12:08 ` [PATCH 5/5] setup.c: use __pa_symbol() where needed Franck Bui-Huu

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