From: Richard Hirst <rhirst@linuxcare.com>
To: Paul Bame <bame@noam.fc.hp.com>
Cc: David Huggins-Daines <dhd@linuxcare.com>,
parisc-linux@thepuffingroup.com
Subject: Re: [parisc-linux] 2.4.0-test6 lack of speed
Date: Thu, 24 Aug 2000 14:46:17 +0100 [thread overview]
Message-ID: <20000824144617.K4060@linuxcare.com> (raw)
In-Reply-To: <E13RdXZ-0003Lz-00@noam.fc.hp.com>; from bame@noam.fc.hp.com on Wed, Aug 23, 2000 at 10:38:13AM -0600
On Wed, Aug 23, 2000 at 10:38:13AM -0600, Paul Bame wrote:
>
> jsm explained to me that the F?CE and P?TLBE instructions should
> only be used "for flushing the entire data or combined cache".
> The operands of F?CE/P?TLBE are "an implementation-dependent function
> of the effective address", essentially an opaque data type that
> varies per processor. The operand of F?C/P?TLB is a virtual address,
> so is the right thing to use for flushing a range of addresses.
OK, thanks. We use F?CE/P?TLBE in cache.h atm.
Richard
next prev parent reply other threads:[~2000-08-24 13:47 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-08-22 14:38 [parisc-linux] 2.4.0-test6 lack of speed Richard Hirst
2000-08-22 14:52 ` Richard Hirst
2000-08-22 15:50 ` Richard Hirst
2000-08-22 16:05 ` David Huggins-Daines
2000-08-23 16:23 ` Richard Hirst
2000-08-23 16:38 ` Paul Bame
2000-08-24 13:46 ` Richard Hirst [this message]
2000-08-29 21:23 ` Matthew Wilcox
2000-08-30 0:17 ` Matthew Wilcox
2000-08-30 8:15 ` Richard Hirst
2000-08-30 12:41 ` Richard Hirst
2000-08-30 10:15 ` Richard Hirst
2000-08-30 13:18 ` Matthew Wilcox
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