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softmmu/dirtylimit: Add parameter check for hmp "set_vcpu_dirty_limit"

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dirty_rate paraemter of hmp command "set_vcpu_dirty_limit" is invalid
if less than 0, so add parameter check for it.

Note that this patch also delete the unsolicited help message and
clean up the code.

Signed-off-by: Hyman Huang(黄勇) <yong.huang@smartx.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <168618975839.6361.17407633874747688653-1@git.sr.ht>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Hyman Huang(黄勇) 2022-11-18 10:08:54 +08:00 committed by Juan Quintela
parent 01ec0f3a92
commit 140e5a7632
1 changed files with 7 additions and 6 deletions
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13
softmmu/dirtylimit.c
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@ -515,14 +515,15 @@ void hmp_set_vcpu_dirty_limit(Monitor *mon, const QDict *qdict)
int64_t cpu_index = qdict_get_try_int(qdict, "cpu_index", -1);
Error *err = NULL;
qmp_set_vcpu_dirty_limit(!!(cpu_index != -1), cpu_index, dirty_rate, &err);
if (err) {
hmp_handle_error(mon, err);
return;
if (dirty_rate < 0) {
error_setg(&err, "invalid dirty page limit %" PRId64, dirty_rate);
goto out;
}
monitor_printf(mon, "[Please use 'info vcpu_dirty_limit' to query "
"dirty limit for virtual CPU]\n");
qmp_set_vcpu_dirty_limit(!!(cpu_index != -1), cpu_index, dirty_rate, &err);
out:
hmp_handle_error(mon, err);
}
static struct DirtyLimitInfo *dirtylimit_query_vcpu(int cpu_index)