LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Michael Mueller <mimu@linux.vnet.ibm.com>
To: qemu-devel@nongnu.org, kvm@vger.kernel.org,
	linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Gleb Natapov <gleb@kernel.org>, Alexander Graf <agraf@suse.de>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	"Jason J. Herne" <jjherne@linux.vnet.ibm.com>,
	Cornelia Huck <cornelia.huck@de.ibm.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Andreas Faerber <afaerber@suse.de>,
	Richard Henderson <rth@twiddle.net>,
	Eduardo Habkost <ehabkost@redhat.com>,
	Michael Mueller <mimu@linux.vnet.ibm.com>
Subject: [PATCH v3 08/16] target-s390x: Add cpu model alias definition routines
Date: Mon,  2 Mar 2015 13:44:00 +0100	[thread overview]
Message-ID: <1425300248-40277-9-git-send-email-mimu@linux.vnet.ibm.com> (raw)
In-Reply-To: <1425300248-40277-1-git-send-email-mimu@linux.vnet.ibm.com>

This patch implements the infrastructure to dynamically add cpu
model aliases.

Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
---
 target-s390x/cpu-models.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++
 target-s390x/cpu-models.h | 11 ++++++
 target-s390x/cpu.c        |  1 +
 3 files changed, 101 insertions(+)

diff --git a/target-s390x/cpu-models.c b/target-s390x/cpu-models.c
index bd9f0bc..608189d 100644
--- a/target-s390x/cpu-models.c
+++ b/target-s390x/cpu-models.c
@@ -87,3 +87,92 @@ S390_PROC_DEF("2827-ga1", CPU_S390_2827_GA1, "IBM zEnterprise EC12 GA1")
 S390_PROC_DEF("2827-ga2", CPU_S390_2827_GA2, "IBM zEnterprise EC12 GA2")
 S390_PROC_DEF("2828-ga1", CPU_S390_2828_GA1, "IBM zEnterprise BC12 GA1")
 
+static GSList *s390_cpu_aliases;
+
+static gint s390_cpu_compare_class_name(gconstpointer a, gconstpointer b)
+{
+    const char *aname = object_class_get_name((ObjectClass *) a);
+    const char *bname = b;
+    int blen;
+
+    if (!strcmp(bname, "none") &&
+        !strcmp(aname, TYPE_S390_CPU)) {
+        return 0;
+    }
+    blen = strlen(bname);
+    if (!strncasecmp(bname, aname, blen) &&
+        !strcmp(aname + blen, "-" TYPE_S390_CPU)) {
+        return 0;
+    }
+    return -1;
+}
+
+/**
+ * s390_cpu_class_by_name:
+ * @name: a cpu model or alias name
+ *
+ * The function searches for the requested cpu model name or an alias
+ * cpu model name and returns the associated object class.
+ *
+ * Returns: reference to object class on success or %NULL elsewise.
+ *
+ * Since: 2.3
+ */
+ObjectClass *s390_cpu_class_by_name(const char *name)
+{
+    GSList *list, *item;
+    ObjectClass *ret = NULL;
+    S390CPUAlias *alias;
+
+    for (item = s390_cpu_aliases; item != NULL; item = item->next) {
+        alias = (S390CPUAlias *) item->data;
+        if (strcmp(alias->name, name) == 0) {
+            return s390_cpu_class_by_name(alias->model);
+        }
+    }
+    list = object_class_get_list(TYPE_S390_CPU, false);
+    item = g_slist_find_custom(list, name, s390_cpu_compare_class_name);
+    if (item) {
+        ret = OBJECT_CLASS(item->data);
+    }
+    g_slist_free(list);
+    return ret;
+}
+
+/**
+ * set_s390_cpu_alias:
+ * @name: the cpu alias name
+ * @model: the cpu model name
+ *
+ * The function registers the alias @name for an existing cpu @model.
+ *
+ * Returns: %0 in case of success
+ *          -%EINVAL if name or model is %NULL or both are idential
+ *                   or model is not a valid cpu model
+ *          -%ENOMEM if internal memory allocation fails
+ *
+ * Since: 2.3
+ */
+int set_s390_cpu_alias(const char *name, const char *model)
+{
+    S390CPUAlias *alias;
+
+    if (!name || !model) {
+        return -EINVAL;
+    }
+    if (!strcmp(name, model)) {
+        return -EINVAL;
+    }
+    if (!s390_cpu_class_by_name(model)) {
+        return -EINVAL;
+    }
+    alias = g_try_malloc0(sizeof(S390CPUAlias));
+    if (!alias) {
+        return -ENOMEM;
+    }
+    alias->name = g_strdup(name);
+    alias->model = g_strdup(model);
+    s390_cpu_aliases = g_slist_append(s390_cpu_aliases, alias);
+    return 0;
+}
+
diff --git a/target-s390x/cpu-models.h b/target-s390x/cpu-models.h
index d5f0b59..a32f559 100644
--- a/target-s390x/cpu-models.h
+++ b/target-s390x/cpu-models.h
@@ -35,6 +35,17 @@
 #define cpu_class(x)      (((x) >> 20) & 0x3)
 #define cpu_generation(x) (((x) >> 24) & 0xff)
 
+ObjectClass *s390_cpu_class_by_name(const char *name);
+int set_s390_cpu_alias(const char *name, const char *model);
+
+/*
+ * S390 cpu aliases will be added dynamically
+ */
+typedef struct S390CPUAlias {
+    char *name;
+    char *model;
+} S390CPUAlias;
+
 /*
  * bits 0-7   : CMOS generation
  * bits 8-9   : reserved
diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
index 7a26b91..1992910 100644
--- a/target-s390x/cpu.c
+++ b/target-s390x/cpu.c
@@ -308,6 +308,7 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
 #endif
     scc->cpu_reset = s390_cpu_reset;
     scc->initial_cpu_reset = s390_cpu_initial_reset;
+    cc->class_by_name = s390_cpu_class_by_name;
     cc->reset = s390_cpu_full_reset;
     cc->has_work = s390_cpu_has_work;
     cc->do_interrupt = s390_cpu_do_interrupt;
-- 
1.8.3.1


  parent reply	other threads:[~2015-03-02 12:48 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-02 12:43 [PATCH v3 00/16] s390x cpu model implementation Michael Mueller
2015-03-02 12:43 ` [PATCH v3 01/16] Introduce probe mode for machine type none Michael Mueller
2015-03-02 13:57   ` Andreas Färber
2015-03-02 16:43     ` [Qemu-devel] " Michael Mueller
2015-03-02 16:57       ` Andreas Färber
2015-03-03 10:55         ` Michael Mueller
2015-03-04 19:19           ` Eduardo Habkost
2015-03-05 14:56             ` Michael Mueller
2015-03-05 15:07               ` Eduardo Habkost
2015-03-02 19:17   ` Eduardo Habkost
2015-03-03 10:23     ` [Qemu-devel] " Michael Mueller
2015-03-02 12:43 ` [PATCH v3 02/16] Introduce option --probe to switch into probe mode Michael Mueller
2015-03-02 12:43 ` [PATCH v3 03/16] Introduce stub routine cpu_desc_avail Michael Mueller
2015-03-02 12:43 ` [PATCH v3 04/16] target-s390x: Introduce cpu facilities Michael Mueller
2015-03-02 12:43 ` [PATCH v3 05/16] target-s390x: Generate facility defines per cpu model Michael Mueller
2015-03-02 12:43 ` [PATCH v3 06/16] target-s390x: Introduce cpu models Michael Mueller
2015-03-02 12:43 ` [PATCH v3 07/16] target-s390x: Define cpu model specific facility lists Michael Mueller
2015-03-02 12:44 ` Michael Mueller [this message]
2015-03-02 12:44 ` [PATCH v3 09/16] target-s390x: Update linux-headers/asm-s390/kvm.h Michael Mueller
2015-03-02 12:44 ` [PATCH v3 10/16] target-s390x: Add KVM VM attribute interface for cpu models Michael Mueller
2015-03-02 12:44 ` [PATCH v3 11/16] target-s390x: Add cpu class initialization routines Michael Mueller
2015-03-02 12:44 ` [PATCH v3 12/16] target-s390x: Prepare accelerator during cpu object realization Michael Mueller
2015-03-02 12:44 ` [PATCH v3 13/16] target-s390x: New QMP command query-cpu-model Michael Mueller
2015-03-02 12:44 ` [PATCH v3 14/16] target-s390x: Extend QMP command query-cpu-definitions Michael Mueller
2015-03-02 19:11   ` Eduardo Habkost
2015-03-04  9:00     ` [Qemu-devel] " Michael Mueller
2015-03-02 12:44 ` [PATCH v3 15/16] target-s390x: Introduce facility test routine Michael Mueller
2015-03-02 12:44 ` [PATCH v3 16/16] target-s390x: Enable cpu model usage Michael Mueller
2015-03-02 19:25 ` [PATCH v3 00/16] s390x cpu model implementation Eduardo Habkost

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1425300248-40277-9-git-send-email-mimu@linux.vnet.ibm.com \
    --to=mimu@linux.vnet.ibm.com \
    --cc=afaerber@suse.de \
    --cc=agraf@suse.de \
    --cc=borntraeger@de.ibm.com \
    --cc=cornelia.huck@de.ibm.com \
    --cc=ehabkost@redhat.com \
    --cc=gleb@kernel.org \
    --cc=jjherne@linux.vnet.ibm.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-s390@vger.kernel.org \
    --cc=pbonzini@redhat.com \
    --cc=qemu-devel@nongnu.org \
    --cc=rth@twiddle.net \
    --subject='Re: [PATCH v3 08/16] target-s390x: Add cpu model alias definition routines' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).