Re: [PATCH] Further TLB handler optimizations

linux-mips

Re: [PATCH] Further TLB handler optimizations

To:	Rojhalat Ibrahim <ibrahim@schenk.isar.de>
Subject:	Re: [PATCH] Further TLB handler optimizations
From:	Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de>
Date:	Mon, 10 Jan 2005 15:04:29 +0100
Cc:	linux-mips@linux-mips.org
In-reply-to:	<41E27A6A.5060204@schenk.isar.de>
Original-recipient:	rfc822;linux-mips@linux-mips.org
References:	<20041223202526.GA2254@deprecation.cyrius.com> <20041224040051.93587.qmail@web52806.mail.yahoo.com> <20041224085645.GJ3539@rembrandt.csv.ica.uni-stuttgart.de> <20050107190605.GG31335@rembrandt.csv.ica.uni-stuttgart.de> <41E27A6A.5060204@schenk.isar.de>
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Rojhalat Ibrahim wrote:
> Thiemo Seufer wrote:
> >
> >I updated the patch now and checked it in. Please test, especially
> >for cases I couldn't do, like R3000-style TLB handling and MIPS32
> >CPUs with 64bit physaddr.
> >
> 
> My Yosemite board (RM9000 processor) does not boot anymore with
> CONFIG_64BIT_PHYS_ADDR. Without that option it seems to be working
> as before. I tried to define cpu_has_64bit_gp_regs.

Correct, this should always be defined for 64bit capable CPUs.

> With that it boots partly.

Where does it fail?

> When I also define cpu_has_64bit_addresses it stops working again.

cpu_has_64bit_addresses is roughly the same as CONFIG_MIPS64,
so it's unsurprising that it breaks 32bit kernels.


Thiemo

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