From: Sairaj Kodilkar <sarunkod@amd.com>
Date: Fri, 1 Aug 2025 06:05:06 +0000 (+0530)
Subject: hw/i386/amd_iommu: Support MMIO writes to the status register
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=10690920b0efb3ed8b166443bae8077104bb129d;p=thirdparty%2Fqemu.git

hw/i386/amd_iommu: Support MMIO writes to the status register

Support the writes to the status register so that guest can reset the
EventOverflow, EventLogInt, ComWaitIntr, etc bits after servicing the
respective interrupt.

Signed-off-by: Sairaj Kodilkar <sarunkod@amd.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Message-Id: <20250801060507.3382-6-sarunkod@amd.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/hw/i386/amd_iommu.c b/hw/i386/amd_iommu.c
index c9c32cf7b0..6925085d29 100644
--- a/hw/i386/amd_iommu.c
+++ b/hw/i386/amd_iommu.c
@@ -862,6 +862,9 @@ static void amdvi_mmio_write(void *opaque, hwaddr addr, uint64_t val,
         amdvi_mmio_reg_write(s, size, val, addr);
         amdvi_handle_pprtail_write(s);
         break;
+    case AMDVI_MMIO_STATUS:
+        amdvi_mmio_reg_write(s, size, val, addr);
+        break;
     }
 }