On 06/17/2010 10:30 PM, Grant Grundler wrote:
On Wed, Jun 16, 2010 at 07:53:37PM -0600, Matthew Wilcox wrote:
On Thu, Jun 17, 2010 at 10:42:44AM +0900, Kenji Kaneshige wrote:
Use resource_size_t for MMIO address instead of unsigned long. Otherwise,
higher 32-bits of MMIO address are cleared unexpectedly in x86-32 PAE.
Signed-off-by: Kenji Kaneshige<kaneshige.kenji@xxxxxxxxxxxxxx>
Acked-by: Matthew Wilcox<willy@xxxxxxxxxxxxxxx>
I guess we never noticed this before because most x86 machines have the
MSI address below 32-bit.
I thought Intel defined x86 MSI to use 0xfee00000 range. So "always"
would be the right term here.
Did you mean "MMIO address"?
(I also believe most x86 have MMIO< 32-bit)
grant
That will generally be true on existing Intel systems, but we certainly
shouldn't assume it will be true for all time. I also believe it is
different on AMD systems, but I don't remember the details there.
-hpa
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