[LTP] [PATCH v2 1/1] lib/tst_virt: support IBM/Z LPAR and z/VM virtualization environments
Alexander Egorenkov
egorenar@linux.ibm.com
Mon Nov 9 15:56:57 CET 2020
Add 3 new virtualization types for IBM System Z architecture:
* VIRT_IBMZ (either LPAR ot z/VM)
* VIRT_IBMZ_LPAR (LPAR only)
* VIRT_IBMZ_ZVM (z/VM only)
VIRT_IBMZ is true when either VIRT_IBMZ_LPAR or VIRT_IBMZ_ZVM is true.
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
---
v1 -> v2:
* Remove redundancy by merging is_ibmz_lpar() and is_ibmz_zvm()
into is_ibmz_vm()
* Fix variable naming in is_ibmz_vm()
include/tst_cpu.h | 3 +++
lib/tst_virt.c | 46 +++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 48 insertions(+), 1 deletion(-)
diff --git a/include/tst_cpu.h b/include/tst_cpu.h
index c83a58260..117e27087 100644
--- a/include/tst_cpu.h
+++ b/include/tst_cpu.h
@@ -12,6 +12,9 @@ long tst_ncpus_max(void);
#define VIRT_ANY 0 /* catch-all argument for tst_is_virt() */
#define VIRT_XEN 1 /* xen dom0/domU */
#define VIRT_KVM 2 /* only default virtual CPU */
+#define VIRT_IBMZ 3 /* ibm system z */
+#define VIRT_IBMZ_LPAR 4 /* ibm system z lpar */
+#define VIRT_IBMZ_ZVM 5 /* ibm system z zvm */
#define VIRT_OTHER 0xffff /* unrecognized hypervisor */
int tst_is_virt(int virt_type);
diff --git a/lib/tst_virt.c b/lib/tst_virt.c
index 914a08d96..86e7cf729 100644
--- a/lib/tst_virt.c
+++ b/lib/tst_virt.c
@@ -64,6 +64,41 @@ static int is_xen(void)
return 0;
}
+static int is_ibmz_vm(int virt_type)
+{
+ FILE *sysinfo;
+ char line[64];
+ int found_lpar, found_zvm;
+
+ if (virt_type != VIRT_IBMZ_LPAR && virt_type != VIRT_IBMZ_ZVM)
+ return 0;
+
+ if (access("/proc/sysinfo", F_OK) != 0)
+ return 0;
+
+ sysinfo = SAFE_FOPEN(NULL, "/proc/sysinfo", "r");
+ found_lpar = 0;
+ found_zvm = 0;
+ while (fgets(line, sizeof(line), sysinfo) != NULL) {
+ if (strstr(line, "LPAR"))
+ found_lpar = 1;
+ else if (strstr(line, "z/VM"))
+ found_zvm = 1;
+ }
+
+ SAFE_FCLOSE(NULL, sysinfo);
+
+ if (virt_type == VIRT_IBMZ_LPAR)
+ return found_lpar && !found_zvm;
+ else
+ return found_lpar && found_zvm;
+}
+
+static int is_ibmz(void)
+{
+ return is_ibmz_vm(VIRT_IBMZ_LPAR) || is_ibmz_vm(VIRT_IBMZ_ZVM);
+}
+
static int try_systemd_detect_virt(void)
{
FILE *f;
@@ -102,6 +137,9 @@ static int try_systemd_detect_virt(void)
if (!strncmp("xen", virt_type, 3))
return VIRT_XEN;
+ if (!strncmp("zvm", virt_type, 3))
+ return VIRT_IBMZ_ZVM;
+
return VIRT_OTHER;
}
@@ -118,11 +156,17 @@ int tst_is_virt(int virt_type)
switch (virt_type) {
case VIRT_ANY:
- return is_xen() || is_kvm();
+ return is_xen() || is_kvm() || is_ibmz();
case VIRT_XEN:
return is_xen();
case VIRT_KVM:
return is_kvm();
+ case VIRT_IBMZ:
+ return is_ibmz();
+ case VIRT_IBMZ_LPAR:
+ return is_ibmz_vm(VIRT_IBMZ_LPAR);
+ case VIRT_IBMZ_ZVM:
+ return is_ibmz_vm(VIRT_IBMZ_ZVM);
case VIRT_OTHER:
return 0;
}
--
2.26.2
More information about the ltp
mailing list