This domctl will allow toolstack to read and write some
ACPI registers. It will be available to both x86 and ARM
but will be implemented first only for x86
Signed-off-by: Boris Ostrovsky
---
CC: Daniel De Graaf
---
Changes in v6:
* Fold xen_acpi_access into xen_domctl_acpi_access
* Some new error return values
tools/flask/policy/modules/dom0.te | 2 +-
tools/flask/policy/modules/xen.if | 4 ++--
xen/arch/x86/domctl.c | 7 +++
xen/arch/x86/hvm/Makefile | 1 +
xen/arch/x86/hvm/acpi.c | 24
xen/include/asm-x86/hvm/domain.h| 3 +++
xen/include/public/domctl.h | 17 +
xen/xsm/flask/hooks.c | 3 +++
xen/xsm/flask/policy/access_vectors | 2 ++
9 files changed, 60 insertions(+), 3 deletions(-)
create mode 100644 xen/arch/x86/hvm/acpi.c
diff --git a/tools/flask/policy/modules/dom0.te
b/tools/flask/policy/modules/dom0.te
index d0a4d91..475d446 100644
--- a/tools/flask/policy/modules/dom0.te
+++ b/tools/flask/policy/modules/dom0.te
@@ -39,7 +39,7 @@ allow dom0_t dom0_t:domain {
};
allow dom0_t dom0_t:domain2 {
set_cpuid gettsc settsc setscheduler set_max_evtchn set_vnumainfo
- get_vnumainfo psr_cmt_op psr_cat_op
+ get_vnumainfo psr_cmt_op psr_cat_op acpi_access
};
allow dom0_t dom0_t:resource { add remove };
diff --git a/tools/flask/policy/modules/xen.if
b/tools/flask/policy/modules/xen.if
index 1aca75d..42a8cc2 100644
--- a/tools/flask/policy/modules/xen.if
+++ b/tools/flask/policy/modules/xen.if
@@ -52,7 +52,7 @@ define(`create_domain_common', `
settime setdomainhandle getvcpucontext set_misc_info };
allow $1 $2:domain2 { set_cpuid settsc setscheduler setclaim
set_max_evtchn set_vnumainfo get_vnumainfo cacheflush
- psr_cmt_op psr_cat_op soft_reset };
+ psr_cmt_op psr_cat_op soft_reset acpi_access };
allow $1 $2:security check_context;
allow $1 $2:shadow enable;
allow $1 $2:mmu { map_read map_write adjust memorymap physmap pinpage
mmuext_op updatemp };
@@ -85,7 +85,7 @@ define(`manage_domain', `
getaddrsize pause unpause trigger shutdown destroy
setaffinity setdomainmaxmem getscheduler resume
setpodtarget getpodtarget };
-allow $1 $2:domain2 set_vnumainfo;
+allow $1 $2:domain2 { set_vnumainfo acpi_access };
')
# migrate_domain_out(priv, target)
diff --git a/xen/arch/x86/domctl.c b/xen/arch/x86/domctl.c
index ab9ad39..2904e49 100644
--- a/xen/arch/x86/domctl.c
+++ b/xen/arch/x86/domctl.c
@@ -1425,6 +1425,13 @@ long arch_do_domctl(
}
break;
+case XEN_DOMCTL_acpi_access:
+if ( !is_hvm_domain(d) )
+ret = -ENODEV;
+else
+ret = hvm_acpi_domctl_access(d, &domctl->u.acpi_access);
+break;
+
default:
ret = iommu_do_domctl(domctl, d, u_domctl);
break;
diff --git a/xen/arch/x86/hvm/Makefile b/xen/arch/x86/hvm/Makefile
index f750d13..bae3244 100644
--- a/xen/arch/x86/hvm/Makefile
+++ b/xen/arch/x86/hvm/Makefile
@@ -1,6 +1,7 @@
subdir-y += svm
subdir-y += vmx
+obj-y += acpi.o
obj-y += asid.o
obj-y += emulate.o
obj-y += hpet.o
diff --git a/xen/arch/x86/hvm/acpi.c b/xen/arch/x86/hvm/acpi.c
new file mode 100644
index 000..04901c1
--- /dev/null
+++ b/xen/arch/x86/hvm/acpi.c
@@ -0,0 +1,24 @@
+/* acpi.c: ACPI access handling
+ *
+ * Copyright (c) 2016 Oracle and/or its affiliates. All rights reserved.
+ */
+#include
+#include
+#include
+
+
+int hvm_acpi_domctl_access(struct domain *d,
+ const struct xen_domctl_acpi_access *access)
+{
+return -ENOSYS;
+}
+
+/*
+ * Local variables:
+ * mode: C
+ * c-file-style: "BSD"
+ * c-basic-offset: 4
+ * tab-width: 4
+ * indent-tabs-mode: nil
+ * End:
+ */
diff --git a/xen/include/asm-x86/hvm/domain.h b/xen/include/asm-x86/hvm/domain.h
index d55d180..52f934a 100644
--- a/xen/include/asm-x86/hvm/domain.h
+++ b/xen/include/asm-x86/hvm/domain.h
@@ -166,6 +166,9 @@ struct hvm_domain {
#define hap_enabled(d) ((d)->arch.hvm_domain.hap_enabled)
+int hvm_acpi_domctl_access(struct domain *d,
+ const struct xen_domctl_acpi_access *access);
+
#endif /* __ASM_X86_HVM_DOMAIN_H__ */
/*
diff --git a/xen/include/public/domctl.h b/xen/include/public/domctl.h
index 85cbb7c..5978664 100644
--- a/xen/include/public/domctl.h
+++ b/xen/include/public/domctl.h
@@ -1145,6 +1145,21 @@ struct xen_domctl_psr_cat_op {
typedef struct xen_domctl_psr_cat_op xen_domctl_psr_cat_op_t;
DEFINE_XEN_GUEST_HANDLE(xen_domctl_psr_cat_op_t);
+struct xen_domctl_acpi_access {
+#define XEN_DOMCTL_ACPI_READ 0
+#define XEN_DOMCTL_ACPI_WRITE 1
+uint8_trw; /* IN: Read or write */
+#define XEN_ACPI_SYSTEM_MEMORY 0
+#define XEN_ACPI_SYSTEM_IO 1
+uint8_tspace_id;
