>>> + if (htab_bolt_mapping(ea, ea + PAGE_SIZE, pa, flags,
>>> + mmu_io_psize, mmu_kernel_ssize)) {
>>> + printk(KERN_ERR "Failed to do bolted mapping IO "
>>> + "memory at %016lx !\n", pa);
>>> + return -ENOMEM;
>>
>> What happens when we do unmap this? I know this code has been around for a
>> while
>> so its not new
>
> you mean iounmap ? it do call vunmap, which look for a linux page table
> entry. If it is a bolt_mapping entry as above, we will not have a linux
> page table entry and that unmap will not relaly remove the mapping.
Make sense, thanks!
Balbir
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