Messages in this thread | | | Date | Tue, 16 Dec 2003 12:55:51 -0500 | From | Jeff Garzik <> | Subject | Re: PCI Express support for 2.4 kernel |
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Arjan van de Ven wrote: > On Tue, 2003-12-16 at 18:10, Jeff Garzik wrote: >>This is going to choke some hardware, I guarantee. >>You always want to make sure your flush is of the same size at the >>write. Reading a byte from an address that the hardware defines as >>"32-bit writes only" can get ugly real quick ;-) > > > also reading back addr might not be the best choice in case some > registers have side effects on reading, it's probably better to read > back an address that is known to be ok to read (like the vendor ID > field)
Hum. Never seen this in a PCI config register, but it's certainly possible... good point.
Jeff
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