Okay, looks like this fixes it (for me anyways).
Thanks to Mark Hahn and Andre for their help with this problem.
P.
--- linux-2.4.1/arch/i386/kernel/pci-pc.c Thu Jun 22 15:17:16 2000
+++ linux-2.4.1-bm-fix/arch/i386/kernel/pci-pc.c Mon Feb 5 18:37:35 2001
@@ -924,6 +924,22 @@
pcibios_max_latency = 32;
}
+static void __init pci_fixup_vt8363(struct pci_dev *d)
+{
+ /*
+ * VIA VT8363 host bridge has broken feature 'PCI Master Read
+ * Caching'. It caches more than is good for it, sometimes
+ * serving the bus master with stale data. Some BIOSes enable
+ * it by default, so we disable it.
+ */
+ u8 tmp;
+ pci_read_config_byte(d, 0x70, &tmp);
+ if(tmp & 4) {
+ printk("PCI: Bus master read caching disabled\n");
+ pci_write_config_byte(d, 0x70, tmp & ~4);
+ }
+}
+
struct pci_fixup pcibios_fixups[] = {
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82451NX,
pci_fixup_i450nx },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454GX,
pci_fixup_i450gx },
@@ -936,6 +952,7 @@
{ PCI_FIXUP_HEADER, PCI_ANY_ID, PCI_ANY_ID,
pci_fixup_ide_bases },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597,
pci_fixup_latency },
{ PCI_FIXUP_HEADER, PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5598,
pci_fixup_latency },
+ { PCI_FIXUP_HEADER, PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0,
+ pci_fixup_vt8363 },
{ 0 }
};
-
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