* [PATCH 0/2] Add Xen CpusAccel
@ 2020-10-12 20:07 Jason Andryuk
2020-10-12 20:07 ` [PATCH 2/2] accel: Add xen CpusAccel using dummy-cpu Jason Andryuk
2020-10-12 20:16 ` [PATCH 0/2] Add Xen CpusAccel Claudio Fontana
0 siblings, 2 replies; 5+ messages in thread
From: Jason Andryuk @ 2020-10-12 20:07 UTC (permalink / raw)
To: qemu-devel
Cc: Jason Andryuk, Thomas Huth, Laurent Vivier, Paolo Bonzini,
Stefano Stabellini, Anthony Perard, Paul Durrant, xen-devel
Xen was left behind when CpusAccel became mandatory and fails the assert
in qemu_init_vcpu(). It relied on the same dummy cpu threads as qtest.
Move the qtest cpu functions to a common location and reuse them for
Xen.
Jason Andryuk (2):
accel: move qtest CpusAccel functions to a common location
accel: Add xen CpusAccel using dummy-cpu
.../qtest-cpus.c => dummy/dummy-cpus.c} | 22 +++++--------------
.../qtest-cpus.h => dummy/dummy-cpus.h} | 10 ++++-----
accel/dummy/meson.build | 7 ++++++
accel/meson.build | 1 +
accel/qtest/meson.build | 1 -
accel/qtest/qtest.c | 7 +++++-
accel/xen/xen-all.c | 10 +++++++++
7 files changed, 34 insertions(+), 24 deletions(-)
rename accel/{qtest/qtest-cpus.c => dummy/dummy-cpus.c} (76%)
rename accel/{qtest/qtest-cpus.h => dummy/dummy-cpus.h} (59%)
create mode 100644 accel/dummy/meson.build
--
2.25.1
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH 2/2] accel: Add xen CpusAccel using dummy-cpu
2020-10-12 20:07 [PATCH 0/2] Add Xen CpusAccel Jason Andryuk
@ 2020-10-12 20:07 ` Jason Andryuk
2020-10-12 20:25 ` Claudio Fontana
2020-10-12 20:16 ` [PATCH 0/2] Add Xen CpusAccel Claudio Fontana
1 sibling, 1 reply; 5+ messages in thread
From: Jason Andryuk @ 2020-10-12 20:07 UTC (permalink / raw)
To: qemu-devel
Cc: Jason Andryuk, Stefano Stabellini, Anthony Perard, Paul Durrant,
open list:X86 Xen CPUs
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-cpu implementation
used by qtest.
Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
---
accel/dummy/meson.build | 1 +
accel/xen/xen-all.c | 10 ++++++++++
2 files changed, 11 insertions(+)
diff --git a/accel/dummy/meson.build b/accel/dummy/meson.build
index 5fbe27de90..cdff0ba746 100644
--- a/accel/dummy/meson.build
+++ b/accel/dummy/meson.build
@@ -4,3 +4,4 @@ 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..2d243c58d4 100644
--- a/accel/xen/xen-all.c
+++ b/accel/xen/xen-all.c
@@ -16,12 +16,15 @@
#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"
#include "migration/global_state.h"
#include "hw/boards.h"
+#include "accel/dummy/dummy-cpus.h"
+
//#define DEBUG_XEN
#ifdef DEBUG_XEN
@@ -153,6 +156,10 @@ 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 +187,9 @@ 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;
}
--
2.25.1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH 0/2] Add Xen CpusAccel
2020-10-12 20:07 [PATCH 0/2] Add Xen CpusAccel Jason Andryuk
2020-10-12 20:07 ` [PATCH 2/2] accel: Add xen CpusAccel using dummy-cpu Jason Andryuk
@ 2020-10-12 20:16 ` Claudio Fontana
2020-10-13 8:42 ` Philippe Mathieu-Daudé
1 sibling, 1 reply; 5+ messages in thread
From: Claudio Fontana @ 2020-10-12 20:16 UTC (permalink / raw)
To: Jason Andryuk
Cc: qemu-devel, Laurent Vivier, Thomas Huth, Stefano Stabellini,
Paul Durrant, xen-devel, Anthony Perard, Paolo Bonzini
On 10/12/20 10:07 PM, Jason Andryuk wrote:
> Xen was left behind when CpusAccel became mandatory and fails the assert
> in qemu_init_vcpu(). It relied on the same dummy cpu threads as qtest.
> Move the qtest cpu functions to a common location and reuse them for
> Xen.
>
> Jason Andryuk (2):
> accel: move qtest CpusAccel functions to a common location
> accel: Add xen CpusAccel using dummy-cpu
>
> .../qtest-cpus.c => dummy/dummy-cpus.c} | 22 +++++--------------
> .../qtest-cpus.h => dummy/dummy-cpus.h} | 10 ++++-----
> accel/dummy/meson.build | 7 ++++++
> accel/meson.build | 1 +
> accel/qtest/meson.build | 1 -
> accel/qtest/qtest.c | 7 +++++-
> accel/xen/xen-all.c | 10 +++++++++
> 7 files changed, 34 insertions(+), 24 deletions(-)
> rename accel/{qtest/qtest-cpus.c => dummy/dummy-cpus.c} (76%)
> rename accel/{qtest/qtest-cpus.h => dummy/dummy-cpus.h} (59%)
> create mode 100644 accel/dummy/meson.build
>
Yep, forgot completely, sorry.
Acked-by: Claudio Fontana <cfontana@suse.de>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 2/2] accel: Add xen CpusAccel using dummy-cpu
2020-10-12 20:07 ` [PATCH 2/2] accel: Add xen CpusAccel using dummy-cpu Jason Andryuk
@ 2020-10-12 20:25 ` Claudio Fontana
0 siblings, 0 replies; 5+ messages in thread
From: Claudio Fontana @ 2020-10-12 20:25 UTC (permalink / raw)
To: Jason Andryuk, qemu-devel
Cc: Anthony Perard, open list:X86 Xen CPUs, Stefano Stabellini, Paul Durrant
On 10/12/20 10:07 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-cpu implementation
> used by qtest.
>
> Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
> ---
> accel/dummy/meson.build | 1 +
> accel/xen/xen-all.c | 10 ++++++++++
> 2 files changed, 11 insertions(+)
>
> diff --git a/accel/dummy/meson.build b/accel/dummy/meson.build
> index 5fbe27de90..cdff0ba746 100644
> --- a/accel/dummy/meson.build
> +++ b/accel/dummy/meson.build
> @@ -4,3 +4,4 @@ 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..2d243c58d4 100644
> --- a/accel/xen/xen-all.c
> +++ b/accel/xen/xen-all.c
> @@ -16,12 +16,15 @@
> #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"
> #include "migration/global_state.h"
> #include "hw/boards.h"
>
> +#include "accel/dummy/dummy-cpus.h"
it seems this should be in includes/sysemu/accel.h or so.
> +
> //#define DEBUG_XEN
>
> #ifdef DEBUG_XEN
> @@ -153,6 +156,10 @@ 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 +187,9 @@ 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;
> }
>
>
Ciao,
Claudio
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH 0/2] Add Xen CpusAccel
2020-10-12 20:16 ` [PATCH 0/2] Add Xen CpusAccel Claudio Fontana
@ 2020-10-13 8:42 ` Philippe Mathieu-Daudé
0 siblings, 0 replies; 5+ messages in thread
From: Philippe Mathieu-Daudé @ 2020-10-13 8:42 UTC (permalink / raw)
To: Claudio Fontana, Jason Andryuk
Cc: Laurent Vivier, Thomas Huth, Stefano Stabellini, Paul Durrant,
qemu-devel, Paolo Bonzini, Anthony Perard, xen-devel
On 10/12/20 10:16 PM, Claudio Fontana wrote:
> On 10/12/20 10:07 PM, Jason Andryuk wrote:
>> Xen was left behind when CpusAccel became mandatory and fails the assert
>> in qemu_init_vcpu(). It relied on the same dummy cpu threads as qtest.
>> Move the qtest cpu functions to a common location and reuse them for
>> Xen.
>>
>> Jason Andryuk (2):
>> accel: move qtest CpusAccel functions to a common location
>> accel: Add xen CpusAccel using dummy-cpu
>>
>> .../qtest-cpus.c => dummy/dummy-cpus.c} | 22 +++++--------------
>> .../qtest-cpus.h => dummy/dummy-cpus.h} | 10 ++++-----
>> accel/dummy/meson.build | 7 ++++++
>> accel/meson.build | 1 +
>> accel/qtest/meson.build | 1 -
>> accel/qtest/qtest.c | 7 +++++-
>> accel/xen/xen-all.c | 10 +++++++++
>> 7 files changed, 34 insertions(+), 24 deletions(-)
>> rename accel/{qtest/qtest-cpus.c => dummy/dummy-cpus.c} (76%)
>> rename accel/{qtest/qtest-cpus.h => dummy/dummy-cpus.h} (59%)
>> create mode 100644 accel/dummy/meson.build
>>
>
> Yep, forgot completely, sorry.
Good opportunity to ask the Xen folks to add testing
to our Gitlab CI, so this doesn't happen again :)
>
> Acked-by: Claudio Fontana <cfontana@suse.de>
>
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
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2020-10-12 20:25 ` Claudio Fontana
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