Re: [PATCH] e1000e: Fix possible interrupt loss when using MSI

2022-07-25 Thread Jason Wang
On Wed, Jul 20, 2022 at 7:14 PM Ake Koomsin wrote: > > Commit "e1000e: Prevent MSI/MSI-X storms" introduced msi_causes_pending > to prevent interrupt storms problem. It was tested with MSI-X. > > In case of MSI, the guest can rely solely on interrupts to clear ICR. > Upon clearing all pending inte

[PATCH] e1000e: Fix possible interrupt loss when using MSI

2022-07-20 Thread Ake Koomsin
Commit "e1000e: Prevent MSI/MSI-X storms" introduced msi_causes_pending to prevent interrupt storms problem. It was tested with MSI-X. In case of MSI, the guest can rely solely on interrupts to clear ICR. Upon clearing all pending interrupts, msi_causes_pending gets cleared. However, when e1000e_i