On 12/24/2023 6:32 PM, Lukas Wunner wrote:
On Sun, Dec 24, 2023 at 12:06:55AM -0500, Ethan Zhao wrote:
--- a/drivers/iommu/intel/pasid.c
+++ b/drivers/iommu/intel/pasid.c
@@ -481,6 +481,9 @@ devtlb_invalidation_with_pasid(struct intel_iommu *iommu,
if (!info || !info->ats_enabled)
return;
+ if (pci_dev_is_disconnected(to_pci_dev(dev)))
+ return;
+
sid = info->bus << 8 | info->devfn;
qdep = info->ats_qdep;
pfsid = info->pfsid;
Do you even need this or is patch [4/4] sufficient?
Is there a benefit to the hunk above on top of patch [4/4]?
this is enough for purely surprise_removal or safe_removal,
it is better to not send "ATS invalidation request" than sent,
then check device state later.
Thanks,
Ethan
Thanks,
Lukas
