[PATCH] cpu_s390: Implement getVendorForModel for IBM Z

[Thomas Huth]

When running "virsh domcapabilities" on a s390x host, all the CPU
models show up with vendor='unknown' - which sounds kind of weird
since the vendor of these mainframe CPUs is well known: IBM.
All CPUs starting with either "z" or "gen" match a real mainframe
CPU by IBM, so let's return the string "IBM" for those now.
The only remaining ones are now the artifical "qemu" and "max"
models from QEMU itself, so it should be OK to get an "unknown"
vendor for those two.

Signed-off-by: Thomas Huth <thuth at redhat.com>
---
 src/cpu/cpu_s390.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/cpu/cpu_s390.c b/src/cpu/cpu_s390.c
index d908a83928..7416ec6dc5 100644
--- a/src/cpu/cpu_s390.c
+++ b/src/cpu/cpu_s390.c
@@ -109,6 +109,16 @@ virCPUs390ValidateFeatures(virCPUDef *cpu)
 }
 
 
+static const char *
+virCPUs390GetVendorForModel(const char *modelName)
+{
+    if (modelName[0] == 'z' || STREQLEN(modelName, "gen", 3))
+        return "IBM";
+
+    return NULL;
+}
+
+
 struct cpuArchDriver cpuDriverS390 = {
     .name = "s390",
     .arch = archs,
@@ -119,4 +129,5 @@ struct cpuArchDriver cpuDriverS390 = {
     .baseline   = NULL,
     .update     = virCPUs390Update,
     .validateFeatures = virCPUs390ValidateFeatures,
+    .getVendorForModel = virCPUs390GetVendorForModel,
 };
-- 
2.31.1