Messages in this thread | | | Date | Sat, 23 Jun 2007 15:22:04 +0900 | From | Tejun Heo <> | Subject | Re: SATA RAID5 speed drop of 100 MB/s |
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Carlo Wood wrote: > For what it's worth... I tried applying > > --- a/drivers/ata/ahci.c > +++ b/drivers/ata/ahci.c > @@ -516,6 +516,8 @@ static void ahci_save_initial_config(struct pci_dev *pdev, > * reset. Values without are used for driver operation. > */ > hpriv->saved_cap = cap = readl(mmio + HOST_CAP); > + hpriv->saved_cap &= ( (1<<28) | (1<<17) ); > + hpriv->saved_cap |= (1 << 27); > hpriv->saved_port_map = port_map = readl(mmio + HOST_PORTS_IMPL);
Hmmm... That's super-odd. You win my oddest-of-the-month award. :-)
I'll think about it a bit. Please stand by.
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