From: Anthony PERARD <anthony.perard@citrix.com>
Date: Wed, 6 Sep 2017 13:40:31 +0000 (+0100)
Subject: hw/acpi: Limit hotplug to root bus on legacy mode
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f5855994fee2f8815dc86b8453e4a63e290aea05;p=qemu.git

hw/acpi: Limit hotplug to root bus on legacy mode

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
index c420a388ea..9db3c2eaf2 100644
--- a/hw/acpi/pcihp.c
+++ b/hw/acpi/pcihp.c
@@ -273,7 +273,7 @@ static void pci_write(void *opaque, hwaddr addr, uint64_t data,
                       addr, data);
         break;
     case PCI_SEL_BASE:
-        s->hotplug_select = data;
+        s->hotplug_select = s->legacy_piix ? ACPI_PCIHP_BSEL_DEFAULT : data;
         ACPI_PCIHP_DPRINTF("pcisel write %" HWADDR_PRIx " <== %" PRIu64 "\n",
                       addr, data);
     default: