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From: "Grover, Andrew" <andrew.grover@intel.com>
To: linux-ia64@vger.kernel.org
Subject: RE: [Linux-ia64] Question about wbinvd
Date: Tue, 04 Jun 2002 17:13:43 +0000	[thread overview]
Message-ID: <marc-linux-ia64-105590701905637@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590701905635@msgid-missing>

> From: Matthew Wilcox [mailto:willy@debian.org] 
> 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.

I don't know if it is not necessary or not. We changed it because "wbinvd"
is a IA32-ism. IA64 may need to define ACPI_FLUSH_CPU_CACHE to something
appropriate.

Regards -- Andy


  parent reply	other threads:[~2002-06-04 17:13 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
2002-06-04 17:13 ` Grover, Andrew [this message]
2002-06-04 18:36 ` David Mosberger
2002-06-05  5:33 ` Takanori Kawano

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