Re: libata: implement on-demand HPA unlocking

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On 2/10/2011 2:19 PM, Tejun Heo wrote:
> Unlocking doesn't equal thrashing and if root wants to ignore BIOS
> suggestions, root shall be able to.

There is a big difference between root choosing to override and the
kernel blindly doing it by default.  When you do it by default, then the
user creates a partition using the protected area, you trash whatever
the bios was storing there.

> That's something BIOS writers should deal with.  Report it to them.
> Distros can be nice and lock it again during shutdown sequence from
> userland too but I don't think it's something which should dictate the
> decisions.

The BIOS dealing with it isn't going to happen because of the "it works
with windows" malaise.  Userland handling it won't work when you sysrq-b
or similar.
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