+
+If this option is not specified then it will default to B<false>.
+
=back
=head2 Devices
diff --git a/tools/golang/xenlight/helpers.gen.go
b/tools/golang/xenlight/helpers.gen.go
index c8669837d8..2449580bad 100644
--- a/tools/golang/xenlight/helpers.gen.go
+++ b/tools/golang/xenlight/helpers.gen.go
@@ -1119,6 +1119,9 @@ return fmt.Errorf("converting field ArchX86.MsrRelaxed:
%v", err)
}
x.Altp2M = Altp2MMode(xc.altp2m)
x.VmtraceBufKb = int(xc.vmtrace_buf_kb)
+if err := x.Vpmu.fromC(&xc.vpmu);err != nil {
+return fmt.Errorf("converting field Vpmu: %v", err)
+}
return nil}
@@ -1600,6 +1603,9 @@ return fmt.Errorf("converting field ArchX86.MsrRelaxed: %v", err)
}
xc.altp2m = C.libxl_altp2m_mode(x.Altp2M)
xc.vmtrace_buf_kb = C.int(x.VmtraceBufKb)
+if err := x.Vpmu.toC(&xc.vpmu); err != nil {
+return fmt.Errorf("converting field Vpmu: %v", err)
+}
return nil
}
diff --git a/tools/golang/xenlight/types.gen.go
b/tools/golang/xenlight/types.gen.go
index 45f2cba3d2..b2e8bd1a85 100644
--- a/tools/golang/xenlight/types.gen.go
+++ b/tools/golang/xenlight/types.gen.go
@@ -521,6 +521,7 @@ MsrRelaxed Defbool
}
Altp2M Altp2MMode
VmtraceBufKb int
+Vpmu Defbool
}
type DomainBuildInfoTypeUnion interface {
diff --git a/tools/include/libxl.h b/tools/include/libxl.h
index ec5e3badae..ee73eb06f1 100644
--- a/tools/include/libxl.h
+++ b/tools/include/libxl.h
@@ -508,6 +508,12 @@
*/
#define LIBXL_HAVE_PHYSINFO_CAP_VPMU 1
+/*
+ * LIBXL_HAVE_VPMU indicates that libxl_domain_build_info has a vpmu parameter,
+ * which allows to enable the access to PMU registers.
+ */
+#define LIBXL_HAVE_VPMU 1
+
/*
* libxl ABI compatibility
*
diff --git a/tools/libs/light/libxl_create.c b/tools/libs/light/libxl_create.c
index e356b2106d..2a0234ec16 100644
--- a/tools/libs/light/libxl_create.c
+++ b/tools/libs/light/libxl_create.c
@@ -91,6 +91,7 @@ int libxl__domain_build_info_setdefault(libxl__gc *gc,
}
libxl_defbool_setdefault(&b_info->device_model_stubdomain, false);
+ libxl_defbool_setdefault(&b_info->vpmu, false);
if (libxl_defbool_val(b_info->device_model_stubdomain) &&
!b_info->device_model_ssidref)
@@ -622,6 +623,9 @@ int libxl__domain_make(libxl__gc *gc, libxl_domain_config
*d_config,
create.flags |= XEN_DOMCTL_CDF_nested_virt;
}
+ if ( libxl_defbool_val(b_info->vpmu) )
+ create.flags |= XEN_DOMCTL_CDF_vpmu;
+
assert(info->passthrough != LIBXL_PASSTHROUGH_DEFAULT);
LOG(DETAIL, "passthrough: %s",
libxl_passthrough_to_string(info->passthrough));
@@ -1199,6 +1203,12 @@ int libxl__domain_config_setdefault(libxl__gc *gc,
goto error_out;
}
+ if (libxl_defbool_val(d_config->b_info.vpmu) && !physinfo.cap_vpmu) {
+ ret = ERROR_INVAL;
+ LOGD(ERROR, domid, "vpmu not supported on this platform\n");
+ goto error_out;
+ }
+
ret = 0;
error_out:
return ret;
diff --git a/tools/libs/light/libxl_types.idl b/tools/libs/light/libxl_types.idl
index 993e83acca..b96fb5c47e 100644
--- a/tools/libs/light/libxl_types.idl
+++ b/tools/libs/light/libxl_types.idl
@@ -655,6 +655,8 @@ libxl_domain_build_info = Struct("domain_build_info",[
# Use zero value to disable this feature.
("vmtrace_buf_kb", integer),
+ ("vpmu", libxl_defbool),
+
], dir=DIR_IN,
copy_deprecated_fn="libxl__domain_build_info_copy_deprecated",
)
diff --git a/tools/ocaml/libs/xc/xenctrl.ml b/tools/ocaml/libs/xc/xenctrl.ml
index 7a4030a192..86758babb3 100644
--- a/tools/ocaml/libs/xc/xenctrl.ml
+++ b/tools/ocaml/libs/xc/xenctrl.ml
@@ -70,6 +70,7 @@ type domain_create_flag =
| CDF_IOMMU
| CDF_NESTED_VIRT
| CDF_VPCI
+ | CDF_VPMU
type domain_create_iommu_opts =
| IOMMU_NO_SHAREPT
diff --git a/tools/ocaml/libs/xc/xenctrl.mli b/tools/ocaml/libs/xc/xenctrl.mli
index 6900513e7f..0fdb0cc169 100644
--- a/tools/ocaml/libs/xc/xenctrl.mli
+++ b/tools/ocaml/libs/xc/xenctrl.mli
@@ -63,6 +63,7 @@ type domain_create_flag =
| CDF_IOMMU
| CDF_NESTED_VIRT
| CDF_VPCI
+ | CDF_VPMU
type domain_create_iommu_opts =
| IOMMU_NO_SHAREPT
diff --git a/tools/xl/xl_parse.c b/tools/xl/xl_parse.c
index 17dddb4cd5..c503b9be00 100644
--- a/tools/xl/xl_parse.c
+++ b/tools/xl/xl_parse.c
@@ -2750,6 +2750,8 @@ skip_usbdev:
"If it fixes an issue you are having please report to "
"xen-devel@xxxxxxxxxxxxxxxxxxxx.\n");
+ xlu_cfg_get_defbool(config, "vpmu", &b_info->vpmu, 0);
+
xlu_cfg_destroy(config);
}
diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c
index aae4472479..2f988c790e 100644
--- a/xen/arch/arm/domain.c
+++ b/xen/arch/arm/domain.c
@@ -276,6 +276,8 @@ static void ctxt_switch_to(struct vcpu *n)
* timer. The interrupt needs to be injected into the guest. */
WRITE_SYSREG(n->arch.cntkctl, CNTKCTL_EL1);
virt_timer_restore(n);
+
+ WRITE_SYSREG(n->arch.mdcr_el2, MDCR_EL2);
}
/* Update per-VCPU guest runstate shared memory area (if registered). */
@@ -586,6 +588,10 @@ int arch_vcpu_create(struct vcpu *v)
v->arch.hcr_el2 = get_default_hcr_flags();
+ v->arch.mdcr_el2 = HDCR_TDRA | HDCR_TDOSA | HDCR_TDA;
+ if ( !(v->domain->options & XEN_DOMCTL_CDF_vpmu) )
+ v->arch.mdcr_el2 |= HDCR_TPM | HDCR_TPMCR;
+
if ( (rc = vcpu_vgic_init(v)) != 0 )
goto fail;
@@ -622,9 +628,9 @@ int arch_sanitise_domain_config(struct xen_domctl_createdomain *config)
{
unsigned int max_vcpus;
- /* HVM and HAP must be set. IOMMU and VPCI may or may not be */
- if ( (config->flags & ~XEN_DOMCTL_CDF_iommu & ~XEN_DOMCTL_CDF_vpci) !=
- (XEN_DOMCTL_CDF_hvm | XEN_DOMCTL_CDF_hap) )
+ /* HVM and HAP must be set. IOMMU, VPCI and VPMU may or may not be */
+ if ( (config->flags & ~(XEN_DOMCTL_CDF_iommu | XEN_DOMCTL_CDF_vpci |
+ XEN_DOMCTL_CDF_vpmu)) != (XEN_DOMCTL_CDF_hvm | XEN_DOMCTL_CDF_hap) )
if ( c->midr.implementer < ARRAY_SIZE(processor_implementers) &&
processor_implementers[c->midr.implementer] )
diff --git a/xen/common/domain.c b/xen/common/domain.c
index 262b6c0c3c..8543fb54fd 100644
--- a/xen/common/domain.c
+++ b/xen/common/domain.c
@@ -480,12 +480,14 @@ static int sanitise_domain_config(struct
xen_domctl_createdomain *config)
bool hvm = config->flags & XEN_DOMCTL_CDF_hvm;
bool hap = config->flags & XEN_DOMCTL_CDF_hap;
bool iommu = config->flags & XEN_DOMCTL_CDF_iommu;
+ bool vpmu = config->flags & XEN_DOMCTL_CDF_vpmu;
if ( config->flags &
~(XEN_DOMCTL_CDF_hvm | XEN_DOMCTL_CDF_hap |
XEN_DOMCTL_CDF_s3_integrity | XEN_DOMCTL_CDF_oos_off |
XEN_DOMCTL_CDF_xs_domain | XEN_DOMCTL_CDF_iommu |
- XEN_DOMCTL_CDF_nested_virt | XEN_DOMCTL_CDF_vpci) )
+ XEN_DOMCTL_CDF_nested_virt | XEN_DOMCTL_CDF_vpci |
+ XEN_DOMCTL_CDF_vpmu) )
{
dprintk(XENLOG_INFO, "Unknown CDF flags %#x\n", config->flags);
return -EINVAL;
@@ -534,6 +536,12 @@ static int sanitise_domain_config(struct
xen_domctl_createdomain *config)
return -EINVAL;
}
+ if ( vpmu && !vpmu_is_available )
+ {
+ dprintk(XENLOG_INFO, "vpmu requested but cannot be enabled this
way\n");
+ return -EINVAL;
+ }
+
return arch_sanitise_domain_config(config);
}
diff --git a/xen/include/asm-arm/domain.h b/xen/include/asm-arm/domain.h
index c9277b5c6d..14e575288f 100644
--- a/xen/include/asm-arm/domain.h
+++ b/xen/include/asm-arm/domain.h
@@ -166,6 +166,7 @@ struct arch_vcpu
/* HYP configuration */
register_t hcr_el2;
+ register_t mdcr_el2;
uint32_t teecr, teehbr; /* ThumbEE, 32-bit guests only */
#ifdef CONFIG_ARM_32
diff --git a/xen/include/public/domctl.h b/xen/include/public/domctl.h
index 4cb3f662c2..a53cbd16f4 100644
--- a/xen/include/public/domctl.h
+++ b/xen/include/public/domctl.h
@@ -71,9 +71,11 @@ struct xen_domctl_createdomain {
#define _XEN_DOMCTL_CDF_nested_virt 6
#define XEN_DOMCTL_CDF_nested_virt (1U << _XEN_DOMCTL_CDF_nested_virt)
#define XEN_DOMCTL_CDF_vpci (1U << 7)
+/* Should we expose the vPMU to the guest? */
+#define XEN_DOMCTL_CDF_vpmu (1U << 8)
/* Max XEN_DOMCTL_CDF_* constant. Used for ABI checking. */
-#define XEN_DOMCTL_CDF_MAX XEN_DOMCTL_CDF_vpci
+#define XEN_DOMCTL_CDF_MAX XEN_DOMCTL_CDF_vpmu
uint32_t flags;
