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qapi/accel: Allow to query mshv capabilities

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Allow to query mshv capabilities via query-mshv QMP and info mshv HMP commands.

Signed-off-by: Magnus Kulke <magnuskulke@linux.microsoft.com>
Acked-by: Dr. David Alan Gilbert <dave@treblig.org>
Link: https://lore.kernel.org/r/20250916164847.77883-25-magnuskulke@linux.microsoft.com
[Fix "since" version. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Praveen K Paladugu 2025-09-16 18:48:44 +02:00 • committed by Paolo Bonzini
parent efc4093358
commit e7b08dfb90
6 changed files with 73 additions and 0 deletions
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13
hmp-commands-info.hx
View file

@ -307,6 +307,19 @@ SRST
Show KVM information.
ERST
{
.name = "mshv",
.args_type = "",
.params = "",
.help = "show MSHV information",
.cmd = hmp_info_mshv,
},
SRST
``info mshv``
Show MSHV information.
ERST
{
.name = "numa",
.args_type = "",

15
hw/core/machine-hmp-cmds.c
View file

@ -163,6 +163,21 @@ void hmp_info_kvm(Monitor *mon, const QDict *qdict)
qapi_free_KvmInfo(info);
}
void hmp_info_mshv(Monitor *mon, const QDict *qdict)
{
MshvInfo *info;
info = qmp_query_mshv(NULL);
monitor_printf(mon, "mshv support: ");
if (info->present) {
monitor_printf(mon, "%s\n", info->enabled ? "enabled" : "disabled");
} else {
monitor_printf(mon, "not compiled\n");
}
qapi_free_MshvInfo(info);
}
void hmp_info_uuid(Monitor *mon, const QDict *qdict)
{
UuidInfo *info;

14
hw/core/machine-qmp-cmds.c
View file

@ -28,6 +28,20 @@
#include "system/runstate.h"
#include "system/system.h"
#include "hw/s390x/storage-keys.h"
#include <sys/stat.h>
/*
* QMP query for MSHV
*/
MshvInfo *qmp_query_mshv(Error **errp)
{
MshvInfo *info = g_malloc0(sizeof(*info));
info->enabled = mshv_enabled();
info->present = accel_find("mshv");
return info;
}
/*
* fast means: we NEVER interrupt vCPU threads to retrieve

1
include/monitor/hmp.h
View file

@ -24,6 +24,7 @@ strList *hmp_split_at_comma(const char *str);
void hmp_info_name(Monitor *mon, const QDict *qdict);
void hmp_info_version(Monitor *mon, const QDict *qdict);
void hmp_info_kvm(Monitor *mon, const QDict *qdict);
void hmp_info_mshv(Monitor *mon, const QDict *qdict);
void hmp_info_status(Monitor *mon, const QDict *qdict);
void hmp_info_uuid(Monitor *mon, const QDict *qdict);
void hmp_info_chardev(Monitor *mon, const QDict *qdict);

1
include/system/hw_accel.h
View file

@ -14,6 +14,7 @@
#include "hw/core/cpu.h"
#include "system/kvm.h"
#include "system/hvf.h"
#include "system/mshv.h"
#include "system/whpx.h"
#include "system/nvmm.h"

29
qapi/accelerator.json
View file

@ -54,3 +54,32 @@
{ 'command': 'x-accel-stats',
'returns': 'HumanReadableText',
'features': [ 'unstable' ] }
##
# @MshvInfo:
#
# Information about support for MSHV acceleration
#
# @enabled: true if MSHV acceleration is active
#
# @present: true if MSHV acceleration is built into this executable
#
# Since: 10.2.0
##
{ 'struct': 'MshvInfo', 'data': {'enabled': 'bool', 'present': 'bool'} }
##
# @query-mshv:
#
# Return information about MSHV acceleration
#
# Returns: @MshvInfo
#
# Since: 10.0.92
#
# .. qmp-example::
#
# -> { "execute": "query-mshv" }
# <- { "return": { "enabled": true, "present": true } }
##
{ 'command': 'query-mshv', 'returns': 'MshvInfo' }