fine-grained PI control
Christoph Hellwig
hch at lst.de
Tue Jul 9 00:08:08 PDT 2024
On Mon, Jul 08, 2024 at 07:47:59PM +0530, Anuj gupta wrote:
> > Last but not least the fact that all reads and writes on PI enabled
> > devices by default check the guard (and reference if available for the
> > PI type) tags leads to a lot of annoying warnings when the kernel or
> > userspace does speculative reads.
> In the current series the application can choose not to specify the
> GUARD check flag, which would disable the guard checking even for PI
> enabled devices. Did you still encounter errors or am I missing
> something here?
Well, this is for probing reads from libblkid, the partition parser
or file system mount routines. So we'll need a flag for the case where
PI is not controlled by the user, as we don't really want all the callers
to actually deal with PI.
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