Michael Ellerman wrote: >> Attached is a patch to fix this problem. During such rare cases don't call >> __ioremap() to do the address translation, instead use __va() . >> > > It's not really rare, it's just when we're reading /dev/oldmem directly. > That's true. Since we don't try to copy raw dump from /dev/oldmem very often, we haven't come across this problem. Hence rare .. but as michael said always recreatable while using dd command with /dev/oldmem.
> We can actually use the __va() trick for the whole linear mapping rather > than just pfn 0, which saves the ioremap. We also shouldn't really be > trying to iounmap(__va(0)). > Yes. Makes sense. Agreed. > So perhaps something more like this? Although it's a bit ugly because of > the need to conditionally call iounmap(). > < snip > Thanks -Sachin _______________________________________________ fastboot mailing list [email protected] https://lists.osdl.org/mailman/listinfo/fastboot
