Re: kern/60144: virtio(4) cache coherence issue

[Tetsuya Isaki <isaki%pastel-flower.jp@localhost>]

At Tue, 31 Mar 2026 06:46:34 -0700,
Jason Thorpe wrote:
> Please try:
> 
>     virt68k/virt68k/bus_dma.c:
> 
> $NetBSD: bus_dma.c,v 1.5 2026/03/31 13:45:00 thorpej Exp $

The spurious interrupt issue still occurs with this bus_dma.c,v 1.5
patch.  When I rewrote it as below, the issue didn't seem to occur.

-       if (ops & BUS_DMASYNC_PREREAD) {
+       if (ops & BUS_DMASYNC_POSTREAD) {

By the way I've tested it on -11 branch.  (because virt68k-current has
another issue.  I'll report once this issue is resolved)
---
Tetsuya Isaki <isaki%pastel-flower.jp@localhost / isaki%NetBSD.org@localhost>