From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [RFC][patch 0/2] mm: remove PageReserved From: Arjan van de Ven In-Reply-To: <42F877FF.9000803@yahoo.com.au> References: <42F57FCA.9040805@yahoo.com.au> <200508090710.00637.phillips@arcor.de> <1123562392.4370.112.camel@localhost> <42F83849.9090107@yahoo.com.au> <20050809080853.A25492@flint.arm.linux.org.uk> <1123576719.3839.13.camel@laptopd505.fenrus.org> <42F877FF.9000803@yahoo.com.au> Content-Type: text/plain Date: Tue, 09 Aug 2005 11:49:44 +0200 Message-Id: <1123580985.3839.16.camel@laptopd505.fenrus.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Nick Piggin Cc: Russell King , ncunningham@cyclades.com, Daniel Phillips , Linux Kernel Mailing List , Linux Memory Management , Hugh Dickins , Linus Torvalds , Andrew Morton , Andrea Arcangeli , Benjamin Herrenschmidt List-ID: On Tue, 2005-08-09 at 19:31 +1000, Nick Piggin wrote: > Arjan van de Ven wrote: > > On Tue, 2005-08-09 at 08:08 +0100, Russell King wrote: > > >>Can we straighten out the terminology so it's less confusing please? > >> > > > > > > and..... can we make a general page_is_ram() function that does what it > > says? on x86 it can go via the e820 table, other architectures can do > > whatever they need.... > > > > That would be very helpful. That should cover the remaining (ab)users > of PageReserved. > > It would probably be fastest to implement this with a page flag, > however if swsusp and ioremap are the only users then it shouldn't > be a problem to go through slower lookups (and this would remove the > need for the PageValidRAM flag that I had worried about earlier). if you want I have implementations of this for x86, x86_64 and iirc ia64 (not 100% sure about the later). None of these use a page flag, but use the same information the kernel uses during bootup to find ram. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org