Messages in this thread | | | From | Dan Williams <> | Date | Fri, 4 Feb 2022 13:12:35 -0800 | Subject | Re: [PATCH V8 44/44] devdax: Enable stray access protection |
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On Thu, Jan 27, 2022 at 9:55 AM <ira.weiny@intel.com> wrote: > > From: Ira Weiny <ira.weiny@intel.com> > > Device dax is primarily accessed through user space and kernel access is > controlled through the kmap interfaces. > > Now that all valid kernel initiated access to dax devices have been > accounted for, turn on PGMAP_PKEYS_PROTECT for device dax. > > Signed-off-by: Ira Weiny <ira.weiny@intel.com> > > --- > Changes for V8 > Rebase to 5.17-rc1 > Use pgmap_protection_available() > s/PGMAP_PKEYS_PROTECT/PGMAP_PROTECTION/ > --- > drivers/dax/device.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/dax/device.c b/drivers/dax/device.c > index d33a0613ed0c..cee375ef2cac 100644 > --- a/drivers/dax/device.c > +++ b/drivers/dax/device.c > @@ -452,6 +452,8 @@ int dev_dax_probe(struct dev_dax *dev_dax) > if (dev_dax->align > PAGE_SIZE) > pgmap->vmemmap_shift = > order_base_2(dev_dax->align >> PAGE_SHIFT); > + if (pgmap_protection_available()) > + pgmap->flags |= PGMAP_PROTECTION;
Looks good.
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
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