Bahadir Balban wrote:
On an ARM core with write-allocate writeback cache, there can be cache
inconsistencies when an executable file is read from a block device
into memory.
On a compact flash block device driver, I got around this problem by
flushing the caches for the pages that bio buffers use on every bio
read. E.g.
cflash_read_sectors(dev, sect_begin, nsect, buf);
flush_icache_range(buf, buf + nsect*512);
Now I have the same problem with a ATA harddisk connected with a
PDC20269 controller. The question is where would be the best
high-level place to put these flushes so that it works regardless of
what block IO driver is used?
Russell, didn't you go through all of this pain and fix it
a year or two ago?
Bahadir, exactly what kernel/version is this with?
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