From: Ralf Baechle <ralf@linux-mips.org>
To: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Subject: Re: [PATCH] MIPS: Calculate proper ebase value for 64-bit kernels
Date: Wed, 7 Apr 2010 16:39:39 +0100 [thread overview]
Message-ID: <20100407153937.GA24982@linux-mips.org> (raw)
In-Reply-To: <1270585790-12730-1-git-send-email-ddaney@caviumnetworks.com>
On Tue, Apr 06, 2010 at 01:29:50PM -0700, David Daney wrote:
> The ebase is relative to CKSEG0 not CAC_BASE. On a 32-bit kernel they
> are the same thing, for a 64-bit kernel they are not.
>
> It happens to kind of work on a 64-bit kernel as they both reference
> the same physical memory. However since the CPU uses the CKSEG0 base,
> determining if a J instruction will reach always gives the wrong
> result unless we use the same number the CPU uses.
Applied, thanks!
Ralf
next prev parent reply other threads:[~2010-04-07 15:39 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-06 20:29 [PATCH] MIPS: Calculate proper ebase value for 64-bit kernels David Daney
2010-04-07 15:39 ` Ralf Baechle [this message]
2010-04-13 5:03 ` Wu Zhangjin
2010-04-13 7:34 ` Thomas Bogendoerfer
2010-04-13 17:16 ` Ralf Baechle
2010-04-13 18:15 ` Thomas Bogendoerfer
2010-04-14 8:03 ` Wu Zhangjin
2010-04-14 11:24 ` Thomas Bogendoerfer
2010-04-26 12:13 ` Wu Zhangjin
2010-04-26 17:19 ` David Daney
2010-04-27 2:53 ` Wu Zhangjin
2010-04-27 23:06 ` Maciej W. Rozycki
[not found] <Pine.LNX.4.21.1004270049440.1248-100000@Mobile0.Peter>
2010-04-27 0:22 ` David Daney
2010-04-27 4:05 ` Wu Zhangjin
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