Enabling or disabling the HIGHME patch is enough to trigger/suppress
hard locking. When HIGHMEM is enabled, locking occurs very easily when
trying to copy a (cloop-mounted) Knoppix image, or even when compiling
a kernel.
I run fairly stock kernels (from Debian kernel source packages) with the
win4lin patch as the only external patch. ACPI is disabled. Disk access is
not tuned in any way, DMA gets enabled by default.
Dirk
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