diff mbox series

[v2,04/12] microvm: make number of virtio transports runtime configurable

Message ID 20201105133923.23821-5-kraxel@redhat.com
State New
Headers show
Series microvm: add second ioapic | expand

Commit Message

Gerd Hoffmann Nov. 5, 2020, 1:39 p.m. UTC
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(-)

Comments

Igor Mammedov Nov. 11, 2020, 12:37 p.m. UTC | #1
On Thu,  5 Nov 2020 14:39:15 +0100
Gerd Hoffmann <kraxel@redhat.com> wrote:

"runtime configurable" I read as being able to change during VM life cycle,
which isn't the case here, nor this patch makes it actually configurable.

So perhaps it needs to be renamed and a commit message explaining why
dropping  macro and adding a field with hardcoded value is necessary.

> 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 0fc216007777..c5d60bacb5e8 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

> @@ -98,6 +97,7 @@ 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 5428448b7059..e92f236bf442 100644

> --- a/hw/i386/microvm.c

> +++ b/hw/i386/microvm.c

> @@ -178,8 +178,13 @@ 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]);
diff mbox series

Patch

diff --git a/include/hw/i386/microvm.h b/include/hw/i386/microvm.h
index 0fc216007777..c5d60bacb5e8 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
@@ -98,6 +97,7 @@  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 5428448b7059..e92f236bf442 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -178,8 +178,13 @@  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]);