From: Matthew Wilcox <willy@debian.org>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] Question about wbinvd
Date: Tue, 04 Jun 2002 12:02:41 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590701905636@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590701905635@msgid-missing>
On Tue, Jun 04, 2002 at 04:45:42PM +0900, Takanori Kawano wrote:
> I have a question about wbinvd in acpi code.
>
> In 2.4.18, wbinvd is implemented in drivers/acpi/include/platform/acgcc.h
> as follows.
If you look at the latest ACPI patch (20020517), you will see:
- wbinvd();
+ ACPI_FLUSH_CPU_CACHE ();
On i386, ACPI_FLUSH_CPU_CACHE is defined to be wbinvd, but on ia64 it is
defined to be a no-op. So the wbinvd in the ACPI code is no longer used.
I presume it was decided it is not necessary.
--
Revolutions do not require corporate support.
next prev parent reply other threads:[~2002-06-04 12:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-04 7:45 [Linux-ia64] Question about wbinvd Takanori Kawano
2002-06-04 12:02 ` Matthew Wilcox [this message]
2002-06-04 17:13 ` Grover, Andrew
2002-06-04 18:36 ` David Mosberger
2002-06-05 5:33 ` Takanori Kawano
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