On 9/25/23 7:41 PM, Jason Gunthorpe wrote:
On Mon, Sep 25, 2023 at 10:29:52AM +0800, Baolu Lu wrote:
On 9/23/23 1:07 AM, Jason Gunthorpe wrote:
Trivially migrate to the ops->blocked_domain for the existing global
static.
Signed-off-by: Jason Gunthorpe<j...@nvidia.com>
---
drivers/iommu/intel/iommu.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
Reviewed-by: Lu Baolu <baolu...@linux.intel.com>
P.S. We can further do the same thing to the identity domain. I will
clean it up after all patches are landed.
I looked at that, and it is not trivial..
Both the Intel and virtio-iommu drivers create an "identity" domain
out of a paging domain and pass that off as a true "identity"
domain. So neither can set the global static since the determination
is at runtime..
Emm, yes. The early hardware requires a real 1:1 mapped page table. The
recent implementations are no longer needed.
What I was thinking about doing is consolidating that code so that the
core logic is the thing turning a paging domain into an identity
domain.
Yes. It's not trivial. Needs a separated series with some refactoring
efforts.
Best regards,
baolu
