3a8e326517
When running in non-cache coherent configuration the memory that was allocated with dma_alloc_coherent() has a custom mapping and so there is no 1-to-1 relationship between the kernel virtual address and the PFN. This means that virt_to_pfn() will not work correctly for those addresses and the default mmap implementation in the form of dma_common_mmap() will map some random, but not the requested, memory area. Fix this by providing a custom mmap implementation that looks up the PFN from the page table rather than using virt_to_pfn. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Michal Simek <michal.simek@xilinx.com> |
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.. | ||
cpu | ||
.gitignore | ||
asm-offsets.c | ||
dma.c | ||
early_printk.c | ||
entry-nommu.S | ||
entry.S | ||
exceptions.c | ||
ftrace.c | ||
head.S | ||
heartbeat.c | ||
hw_exception_handler.S | ||
intc.c | ||
irq.c | ||
kgdb.c | ||
Makefile | ||
mcount.S | ||
microblaze_ksyms.c | ||
misc.S | ||
module.c | ||
platform.c | ||
process.c | ||
prom.c | ||
prom_parse.c | ||
ptrace.c | ||
reset.c | ||
setup.c | ||
signal.c | ||
stacktrace.c | ||
sys_microblaze.c | ||
syscall_table.S | ||
timer.c | ||
traps.c | ||
unwind.c | ||
vmlinux.lds.S |