diff mbox series

[v2,3/3] accel: Add xen CpusAccel using dummy-cpus

Message ID 20201013140511.5681-4-jandryuk@gmail.com
State New
Headers show
Series Add Xen CpusAccel | expand

Commit Message

Jason Andryuk Oct. 13, 2020, 2:05 p.m. UTC
Xen was broken by commit 1583a3898853 ("cpus: extract out qtest-specific
code to accel/qtest").  Xen relied on qemu_init_vcpu() calling
qemu_dummy_start_vcpu() in the default case, but that was replaced by
g_assert_not_reached().

Add a minimal "CpusAccel" for Xen using the dummy-cpus implementation
used by qtest.

Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
---
 accel/meson.build   | 1 +
 accel/xen/xen-all.c | 8 ++++++++
 2 files changed, 9 insertions(+)

Comments

Claudio Fontana Oct. 13, 2020, 2:12 p.m. UTC | #1
On 10/13/20 4:05 PM, Jason Andryuk wrote:
> Xen was broken by commit 1583a3898853 ("cpus: extract out qtest-specific

> code to accel/qtest").  Xen relied on qemu_init_vcpu() calling

> qemu_dummy_start_vcpu() in the default case, but that was replaced by

> g_assert_not_reached().

> 

> Add a minimal "CpusAccel" for Xen using the dummy-cpus implementation

> used by qtest.

> 

> Signed-off-by: Jason Andryuk <jandryuk@gmail.com>

> ---

>  accel/meson.build   | 1 +

>  accel/xen/xen-all.c | 8 ++++++++

>  2 files changed, 9 insertions(+)

> 

> diff --git a/accel/meson.build b/accel/meson.build

> index 9a417396bd..b26cca227a 100644

> --- a/accel/meson.build

> +++ b/accel/meson.build

> @@ -12,3 +12,4 @@ dummy_ss.add(files(

>  ))

>  

>  specific_ss.add_all(when: ['CONFIG_SOFTMMU', 'CONFIG_POSIX'], if_true: dummy_ss)

> +specific_ss.add_all(when: ['CONFIG_XEN'], if_true: dummy_ss)

> diff --git a/accel/xen/xen-all.c b/accel/xen/xen-all.c

> index 60b971d0a8..878a4089d9 100644

> --- a/accel/xen/xen-all.c

> +++ b/accel/xen/xen-all.c

> @@ -16,6 +16,7 @@

>  #include "hw/xen/xen_pt.h"

>  #include "chardev/char.h"

>  #include "sysemu/accel.h"

> +#include "sysemu/cpus.h"

>  #include "sysemu/xen.h"

>  #include "sysemu/runstate.h"

>  #include "migration/misc.h"

> @@ -153,6 +154,10 @@ static void xen_setup_post(MachineState *ms, AccelState *accel)

>      }

>  }

>  

> +const CpusAccel xen_cpus = {

> +    .create_vcpu_thread = dummy_start_vcpu_thread,

> +};

> +

>  static int xen_init(MachineState *ms)

>  {

>      MachineClass *mc = MACHINE_GET_CLASS(ms);

> @@ -180,6 +185,9 @@ static int xen_init(MachineState *ms)

>       * opt out of system RAM being allocated by generic code

>       */

>      mc->default_ram_id = NULL;

> +

> +    cpus_register_accel(&xen_cpus);

> +

>      return 0;

>  }

>  

> 

Reviewed-by: Claudio Fontana <cfontana@suse.de>
Anthony PERARD Oct. 16, 2020, 3:05 p.m. UTC | #2
On Tue, Oct 13, 2020 at 10:05:11AM -0400, Jason Andryuk wrote:
> Xen was broken by commit 1583a3898853 ("cpus: extract out qtest-specific

> code to accel/qtest").  Xen relied on qemu_init_vcpu() calling

> qemu_dummy_start_vcpu() in the default case, but that was replaced by

> g_assert_not_reached().

> 

> Add a minimal "CpusAccel" for Xen using the dummy-cpus implementation

> used by qtest.

> 

> Signed-off-by: Jason Andryuk <jandryuk@gmail.com>


Acked-by: Anthony PERARD <anthony.perard@citrix.com>


Thanks,

-- 
Anthony PERARD
diff mbox series

Patch

diff --git a/accel/meson.build b/accel/meson.build
index 9a417396bd..b26cca227a 100644
--- a/accel/meson.build
+++ b/accel/meson.build
@@ -12,3 +12,4 @@  dummy_ss.add(files(
 ))
 
 specific_ss.add_all(when: ['CONFIG_SOFTMMU', 'CONFIG_POSIX'], if_true: dummy_ss)
+specific_ss.add_all(when: ['CONFIG_XEN'], if_true: dummy_ss)
diff --git a/accel/xen/xen-all.c b/accel/xen/xen-all.c
index 60b971d0a8..878a4089d9 100644
--- a/accel/xen/xen-all.c
+++ b/accel/xen/xen-all.c
@@ -16,6 +16,7 @@ 
 #include "hw/xen/xen_pt.h"
 #include "chardev/char.h"
 #include "sysemu/accel.h"
+#include "sysemu/cpus.h"
 #include "sysemu/xen.h"
 #include "sysemu/runstate.h"
 #include "migration/misc.h"
@@ -153,6 +154,10 @@  static void xen_setup_post(MachineState *ms, AccelState *accel)
     }
 }
 
+const CpusAccel xen_cpus = {
+    .create_vcpu_thread = dummy_start_vcpu_thread,
+};
+
 static int xen_init(MachineState *ms)
 {
     MachineClass *mc = MACHINE_GET_CLASS(ms);
@@ -180,6 +185,9 @@  static int xen_init(MachineState *ms)
      * opt out of system RAM being allocated by generic code
      */
     mc->default_ram_id = NULL;
+
+    cpus_register_accel(&xen_cpus);
+
     return 0;
 }