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[PATCH 1/4] microvm: make number of virtio transports runtime configurab
From: |
Gerd Hoffmann |
Subject: |
[PATCH 1/4] microvm: make number of virtio transports runtime configurable |
Date: |
Fri, 16 Oct 2020 13:43:25 +0200 |
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
include/hw/i386/microvm.h | 2 +-
hw/i386/microvm.c | 9 +++++++--
2 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/include/hw/i386/microvm.h b/include/hw/i386/microvm.h
index 91b064575d55..0154ad5bd707 100644
--- a/include/hw/i386/microvm.h
+++ b/include/hw/i386/microvm.h
@@ -52,7 +52,6 @@
/* Platform virtio definitions */
#define VIRTIO_MMIO_BASE 0xfeb00000
-#define VIRTIO_NUM_TRANSPORTS 8
#define VIRTIO_CMDLINE_MAXLEN 64
#define GED_MMIO_BASE 0xfea00000
@@ -95,6 +94,7 @@ struct MicrovmMachineState {
/* Machine state */
uint32_t virtio_irq_base;
+ uint32_t virtio_num_transports;
bool kernel_cmdline_fixed;
Notifier machine_done;
Notifier powerdown_req;
diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index 9dd74458aca4..eaf5da31f7e1 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -177,8 +177,13 @@ static void microvm_devices_init(MicrovmMachineState *mms)
kvmclock_create(true);
- mms->virtio_irq_base = x86_machine_is_acpi_enabled(x86ms) ? 16 : 5;
- for (i = 0; i < VIRTIO_NUM_TRANSPORTS; i++) {
+ mms->virtio_irq_base = 5;
+ mms->virtio_num_transports = 8;
+ if (x86_machine_is_acpi_enabled(x86ms)) {
+ mms->virtio_irq_base = 16;
+ }
+
+ for (i = 0; i < mms->virtio_num_transports; i++) {
sysbus_create_simple("virtio-mmio",
VIRTIO_MMIO_BASE + i * 512,
x86ms->gsi[mms->virtio_irq_base + i]);
--
2.27.0